Recommended Air Lines

K2ConceptsK2Concepts Posts: 13,443Administrator El Jefe
edited August 2014 in Do It Yourself
Since we get asked this many times over...here ya go...

A frequent question regarding air compressors is, “What type of pipe should I use for my air compressor?” Below are the most common options:

1. PVC Pipe - The use of PVC pipe is common but NOT RECOMMENDED for use with compressed air. It is often used because it is readily available, inexpensive, and easy to install. However, as with many plastics, PVC gets brittle over time and can crack, break, or even shatter. The presence of air compressor oils in the line and heat from the compressed air accelerates the degradation of PVC. These failures, combined with air under pressure, are potentially fatal due to the airborne, razor-sharp shrapnel. It is also an OSHA violation to use PVC for compressed air distribution, which means you could incur a hefty fine.

2. Galvanized Pipe - Galvanized piping is commonly used for water distribution and for general plumbing. Galvanized coating resists moisture in compressed air but pieces of the coating will flake off and end up in your tools. The debris will cause severe damage to cylinders, pneumatic tools, and other components. Even more importantly, when exiting a blow gun, little flakes can cause serious bodily harm. Galvanized piping is NOT RECOMMENDED for compressed air systems.

3. Black Pipe - Black pipe is the most commonly used pipe RECOMMENDED for compressed air systems. It is readily available, it is strong and durable and most people are familiar with how to install it. With all of the advantages black pipe provides, however, it will produce rust contamination that damages pneumatic tooling. The pipe is uncoated, and the presence of moisture will initiate rusting which will increase over time. The presence of moisture can be controlled with an after cooler and/or dryer, but it can never be completely eliminated. Furthermore, the installation of black pipe systems requires significant amount of time. Plan carefully, changes to the system will require de-pressurizing the system while new drops or additional loops are added.

4. Copper Pipe - Copper pipe is commonly RECOMMENDED for clean air, it works very well, and it is expensive. Copper pipe makes for an aesthetically pleasing installation, but the soldering of joints is time consuming and requires skill. Since the combination of copper and water does not create any corrosion or rusting, the air delivered to the pneumatic tools is clean and free of particulates.

5. Stainless Steel - The RECOMMENDED use of stainless steel to minimize corrosion has a long and successful history. It combines all of the strength and durability benefits of black pipe, but without the problem of rusting. As with black pipe, most people are familiar with how to install the fittings and pipe, but the installation is a lengthy process. Stainless Steel pipe threads also have a tendency to gall and freeze up which can cause great difficulty during disassembly, and for general maintenance. For this reason, Victaulic fittings have successfully been used. Victaulic fittings are installed with a rubber seal and bolted clamp. Victaulic fittings are the preferred fittings for larger pipes, whether black or stainless steel, due to their lighter weight.

6. Aluminum Pipe - The latest technology are push-to-connect aluminum piping systems for compressed air lines (such as Parker Transair). Aluminum is light-weight, making it easy to handle compared to schedule 40 or 80 pipe, and is HIGHLY RECOMMENDED for clean air applications. It is non-corrosive, as is the copper pipe, and will deliver clean air to the pneumatic tooling. The Parker Transair brand of aluminum piping uses push-to-connect fittings, which make installation fast and easy. Skilled labor is not required to install TransAir.


Parker cites the following benefits of its Transair piping:
Fast installation – no welding, soldering or other time-consuming methods of attachment; just push the pipe into a fitting until it bottoms out
Light-weight – easy to handle
Non-corrosive – provides clean air for years to come, prolonging the working life of components in the system
Very adaptable – easy and fast to change (reroute) or add new components and drops, even under pressure
Higher up-front cost of materials (compared to black pipe) may discourage some from exploring this option, but the difference in cost of material is recovered by savings on labor during (typical) installation (parts are no good when they’re sitting in a pile on the floor)
Most likely the lowest cost of ownership compared to the other types of piping, especially if changes to the system configuration are required.

In summary, there are many choices when it comes to piping for your compressed air system. Do not use PVC or galvanized pipe. If you can help it, it’s best to steer clear of black pipe as well – you will save time, money, and headache by avoiding these options.

Choose among these suitable options - copper piping, stainless steel piping and aluminum piping - based on the requirements of your application, skills of your staff, and time constraints. If you think that additions or changes to your system(s) are likely, go with a push-to-connect aluminum piping system such as Transair.

Article was found here: hoseandfittingsetc.com/our-blog/bid/94802/What-Type-of-Pipe-Should-I-Use-for-My-Air-Compressorhttp://
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Comments

  • WatermarkWatermark Posts: 124Member ✭✭
    I used the rapid air system and have been extremely happy. Easy to install and should last without all the problems that black pipe will have down the road.

    http://www.rapidairproducts.com/maxline_masterkits.asp




  • K2ConceptsK2Concepts Posts: 13,443Administrator El Jefe
    Excellent choice...
  • JeremyJeremy Posts: 1,109Member ✭✭✭
    is this just to keep the air line off the ground?
  • K2ConceptsK2Concepts Posts: 13,443Administrator El Jefe
    More for running hard lines around your shop...
  • RBurressRBurress Posts: 1,553Member, Moderator, Business Ninja El Moderator
    edited August 2014
    Just to add a note when installing hard lines. Say you use steel for the main lines and use copper for your drops, be sure and use a di-electric union when connecting dissimilar metals. Otherwise electrolysis will kick in and speed up the corrosion process, especially with compressed air.
  • MidOhioHydrographicsMidOhioHydrographics Posts: 9,472Member, Moderator, Business Ninja El Moderator
    Fortunately my building had a lot of air lines ran already when we moved it. Unfortunately, it's all old black pipe with corrosion already present. Here's a pic of my setup I use before my paint booth, activator gun, and my media blaster. The filters I use aren't cheap, but they definitely work! The second pic shows all the rust that comes through the lines caught by the water separator/filter that is first in line. The Motor Guard filter (last in line) has a filter that looks like a roll of toilet paper. It's a sub-micronic filter that catches any remaining oils, water, or particulates. So far so good, but we will see over time.
  • airtimegrafixairtimegrafix Posts: 2,144Member ✭✭✭✭
    all I can say is never never use pvc!!!!!!!!!!!!!!! did my first set up in pvc and was like only till I get goin then replace!! well time went on and I never did replace it and whatcha know boom!! shrapnel all over the place didn't hit me but holly pope on a pogo stick it was scary!!
  • IngramHGIngramHG Posts: 159Member ✭✭✭
    I owned a tire shop at one time. PVC works but not for long. It was a waste of time and money. All you have to do is bump it with something fairly hard like a wheel and it blows up (cracks). Or, pull on a hose slightly and it will break the coupler. I installed black pipe from the compressor located outside (under a cover) and ran the pipe inside (in the weather until piped through the wall). The black pipe never broke or leaked. It did get some surface rust but never leaked or broke the 15 years I owned that shop. Black pipe was also used from the boiler to the recap mold. It it never corroded from the steam and pressure either. The boiler was used for about 12 years.

    I would like to second that if black pipe is used then it must be planned appropriately.
  • MidOhioHydrographicsMidOhioHydrographics Posts: 9,472Member, Moderator, Business Ninja El Moderator
    napurist said:


    I would like to second that if black pipe is used then it must be planned appropriately.

    +1
    I've learned to use a Tee almost anyplace you would use an elbow, and then plug the side you don't use. Then you can tap into the system pretty easily if you need something later. Also put unions before your terminal setup and at other points to make it easier to take apart later.
  • TsunamiTsunami Posts: 4,952Member, Business Ninja ✭✭✭✭✭
    +1 on the unions and tee's
  • TsunamiTsunami Posts: 4,952Member, Business Ninja ✭✭✭✭✭
    Sorry guy's I used to have a granite shop in my garage. We used pneumatic grinders and polishers every day. I used schedule 80 gray pipe and never had a problem. I have white and grey schedule 80 in my hydro shop and have it cranked up to 150 tank psi. No problems.
  • K2ConceptsK2Concepts Posts: 13,443Administrator El Jefe
    Dave, I pulled this off the OSHA website:

    "Furthermore, sections 842.32, 842.43 and 849.52(b) of the American National Standards Institute/American Society of Mechanical Engineers (ANSI/ASME) B31.8-1986, Gas Transmission and Distribution Piping Systems Standard, limit the operating pressure of plastic piping distribution systems to 100 pounds per inch (psi) and prohibit the installation of such systems above ground except where ". . . the above ground portion of the plastic service line is completely enclosed in a conduit or casing of sufficient strength to provide protection from external damage and deterioration." (Excerpts attached.)"

    Be careful is all I got to say...
  • TsunamiTsunami Posts: 4,952Member, Business Ninja ✭✭✭✭✭

    Dave, I pulled this off the OSHA website:

    "Furthermore, sections 842.32, 842.43 and 849.52(b) of the American National Standards Institute/American Society of Mechanical Engineers (ANSI/ASME) B31.8-1986, Gas Transmission and Distribution Piping Systems Standard, limit the operating pressure of plastic piping distribution systems to 100 pounds per inch (psi) and prohibit the installation of such systems above ground except where ". . . the above ground portion of the plastic service line is completely enclosed in a conduit or casing of sufficient strength to provide protection from external damage and deterioration." (Excerpts attached.)"

    Be careful is all I got to say...

    Much appreciated young man. I will heed the warning., But twelve years?
    I use 1" thru-out my shop.






  • IngramHGIngramHG Posts: 159Member ✭✭✭
    @K2Concepts‌, that's for gas not air. Gas "Transmission and Piping" Systems.

    802.1 Scope
    802.11 This Code covers the design, fabrication,
    installation, inspection, and testing of pipeline facilities
    used for the transportation of gas. This Code also covers
    safety aspects of the operation and maintenance of those
    facilities.

  • MidOhioHydrographicsMidOhioHydrographics Posts: 9,472Member, Moderator, Business Ninja El Moderator
    Are they meaning gas vs liquid (as in states of matter) or Natural Gas vs Air? Air is a gas... and psi is still pounds per square inch regardless of what's in the pipe. I would say liquid vs gas may require different ratings due to the non-compressive qualities of liquid. And I can also see how below ground/cased in conduit would be much safer. All this being said, if installed properly a 630 psi rating is pretty high! Only concern I would have is like mentioned above. If it gets whacked with something hard while under pressure, the failure would be catastrophic with shrapnel flying everywhere!
  • RBurressRBurress Posts: 1,553Member, Moderator, Business Ninja El Moderator
    Yes, all of that is pertaining to natural gas facilities (oil field). What that is referring to is a lot of the fields will run HDPE gathering lines-all low pressure to the facility, from there where it comes out of the ground is a transition to steel into a manifold that goes to a compressor or pump and then that is sent into the main line to go to the processing plants.

    As far as using pvc for the compressed air, installing it out of harms way is a must, the other critical points are the connection to which they will be absorbing the vibrations of the compressor and causing the plastic threads to shear usually or as stated above someone jerking on a hose at a drop.
  • HardeightHardeight Posts: 584Member ✭✭✭
    MidOhio is getting warm here.
    The calculations and design references all refer to compressed air or gas, vs liquid.

    This is where it starts to get deep. It's early and I haven't had much sleep so I will try my best here. Air (or gas) is highly compressible, as opposed to something like water which has a high resistance to compression.
    This means, when increasing air pressure, you can cram a huge amount of volume, in comparison to atmospheric pressure, into a much smaller space. That volume will constantly try to revert back to normal if given a chance such as a crack. So you have the potential for a much more violent event if the air line ruptures in comparison to a water line.

    In any case, it's a bad idea. It's been shunned since before I was born.

    https://osha.gov/dts/hib/hib_data/hib19880520.html

    This guy from that link does a better job than me in explaining it.

    "The main problem with using PVC pipe and fittings for compressed gas is not that it spontaneously explodes but that PVC is a brittle material that can be broken or shattered with external force unless properly protected. Compressed gasses can be best described as being analogous to a coiled spring. When a PVC pipe or fitting fails when under stress from compressed gas it literally explodes like a bomb, sending shards of plastic flying several feet in all directions. Liquids, on the other hand, being compressed by only 1/10th of 1% contain very little stored energy. When pressurized systems with liquids fail, the energy is dissipated very quickly, thereby creating a much lower potential for hazard."

    It's kind of like having a live hand grenade in your shop with no pin and a rubber band holding on the lever. Sure it might never explode, but if it ever does it wouldn't have been worth the risk...
  • RBurressRBurress Posts: 1,553Member, Moderator, Business Ninja El Moderator
    That is why is the oil and gas industry we do hydrostatic testing of pipelines rather that air test before putting them in service. You think pvc is bad rupturing, steel rips apart like beer cans when failures happen with gas, air, or nitrogen. Lost a good friend this way.
  • TsunamiTsunami Posts: 4,952Member, Business Ninja ✭✭✭✭✭
    edited August 2014
    You guys are like walking encyclopedias. I think the fact that it could happen even though it has no;t happened is enough to reconsider. We are talking a few hundred dollars for the refit. Not a lot to pay for the potential hazard that exists. Copper is what I have in my other shop. That has worked very well for 12 years. Excellent thread.
    P.S. Who says you can't teach an old dog a new trick.
  • K2ConceptsK2Concepts Posts: 13,443Administrator El Jefe
    napurist said:

    @K2Concepts‌, that's for gas not air. Gas "Transmission and Piping" Systems.

    802.1 Scope
    802.11 This Code covers the design, fabrication,
    installation, inspection, and testing of pipeline facilities
    used for the transportation of gas. This Code also covers
    safety aspects of the operation and maintenance of those
    facilities.

    Actually? No it's not...that was just a small part of the letter found here: https://osha.gov/dts/hib/hib_data/hib19880520.html

    But here is a cut and paste of just some of the information...you can see it specifically addresses PVC used in the transfer of compressed air...

    OSHA Hazard Information Bulletins
    The Use of Polyvinyl Chloride (PVC) Pipe in Above ground Installations
    May 20, 1988

    MEMORANDUM FOR:
    REGIONAL ADMINISTRATORS

    THROUGH:

    LEO CAREY
    Director
    Office of Field Programs
    FROM:

    EDWARD BAIER
    Director
    Directorate of Technical Support
    SUBJECT:

    Safety Hazard Information Bulletin on the Use of Polyvinyl Chloride (PVC) Pipe in Above ground Installations
    The Dallas Regional Office has brought to our attention a potential serious hazard existing with the use of polyvinyl chloride (PVC) plastic pipes for transporting compressed gases in above ground installations. An employee in a Texas plant was injured recently by a rupture in a PVC compressed air line. Plastic projectiles from the point of rupture caused lacerations of the employee's hand. This is noteworthy because the Plastic Pipe Institute, in its Recommendation B dated January 19, 1972, recommends against the use of thermoplastic pipe to transport compressed air or other compressed gases in exposed plant piping. (See attachment.)

    Furthermore, sections 842.32, 842.43 and 849.52(b) of the American National Standards Institute/American Society of Mechanical Engineers (ANSI/ASME) B31.8-1986, Gas Transmission and Distribution Piping Systems Standard, limit the operating pressure of plastic piping distribution systems to 100 pounds per inch (psi) and prohibit the installation of such systems above ground except where ". . . the above ground portion of the plastic service line is completely enclosed in a conduit or casing of sufficient strength to provide protection from external damage and deterioration." (Excerpts attached.)

    Additional consensus standards applicable to PVC compressed gas systems include American Society for Testing Materials (ASTM) D1785-86, Standard Specification for Polyvinyl Chloride Plastic Pipe, Schedules 40, 80, and 120, and ASTM D2513-86a, Standard Specification for Thermoplastic Gas Pressure Piping Systems.

    Please disseminate this bulletin to all Area Offices, State Plan States and Consultation Projects.

    Attachments

    February 14, 1989

    Mr. Jack Cannova Tempe
    Industrial
    412 W. Dryon Street
    Tempe, Arizona 85283
    Dear Mr. Cannova:

    In response to your recent inquiry concerning our regulatory position on the use of plastic pipe for compressed air systems, I trust this letter will clear up any confusion over the issue.

    It is our position that PVC pipe shall not be used as a means of transporting compressed air. This position follows the manufacturer's own statements that PVC is unsuitable for compressed air systems. We do allow the use of certain ABS materials that are specifically designed for compressed air systems. One such product is "Duraplus" air line piping system ABS pipe. However, as in any such system, the manufacturer's specifications on acceptable pressure and temperature considerations must be followed.

    In closing, misapplication of a product, such as using PVC for compressed air systems, may result in citations and penalties being issued dependent upon the specific conditions.

    I appreciate your concern and inquiry into this potential safety hazard.

    Sincerely,

    SAM A. ROGERS
    Bureau Chief

    October 5, 1988

    Mr. Tim Arbogast
    Arizona OSHA
    800 W. Washington
    Phoenix, Arizona 85007-2922
    Dear Mr. Arbogast:

    It has recently come to my attention that there is a severe safety regarding the improper usage of plastic polyvinyl chloride (PVC) pipe. This pipe is designed for the transmittal of liquids, and is dangerous when used for transmitting compressed air or gas. Unfortunately, PVC has been frequently used with compressed air in construction projects across the country.

    The state of Washington has notified the public that PVC pipe is not to be used in compressed air systems. I have also learned that the state of Nevada is in the process of making a similar determination and announcement. Additionally manufacturers of this product advise against its use with compressed air in their catalogue publications.

    I believe that it is in the best interests of the citizens of our state if your office would expeditiously make such an announcement. A notice to users of the hazards of PVC pipe - when used improperly - would have the effect of preventing possible severe injury to people who work with or near this product.

    By way of this letter, I am contacting the Department of Labor, OSHA, in Washington, D.C. and asking their officials to report to me on actions taken on the Federal level to restrict the use of this pipe and to notify users of the potential hazards involved in improper use of PVC pipe.

    Your timely consideration of this request is appreciated.

    Sincerely,

    DENNIS DeCONCINI
    United States Senator

    STATE OF WASHINGTON
    Department of Labor & Industries
    Hazard Alert

    For more information, call:
    1-800-423-7233
  • K2ConceptsK2Concepts Posts: 13,443Administrator El Jefe

    FOR IMMEDIATE RELEASE
    May 26, 1988

    PVC pipe not to be used in compressed air systems

    OLYMPIA -- The Department of Labor and Industries warned today that plastic polyvinyl chloride (PVC) pipe cannot be used in compressed air piping systems without the risk of explosion.

    When PVC piping explodes, plastic shrapnel pieces are thrown in all directions.

    "We're seeing more incidents of explosive failure, and we're citing more employers for using PVC air system piping," said Paul Merrill, senior safety inspector in L&I's Spokane office.

    "It's probably just a matter of time before someone gets seriously injured in one of these explosions unless everyone pays more attention to the manufacturer's warnings," Merrill said.

    Last year, a section of PVC pipe being used for compressed air exploded 27 feet above a warehouse floor. A fragment of the pipe flew 60 feet and embedded itself in a roll of paper. Fortunately, nobody was in the area at the time.

    A PVC pipe explosion in a new plant in Selah broke an employee's nose and cut his face.
    PVC piping buried 3 feet underground at a Yakima manufacturing plant exploded, opening up a crater approximately 4 feet deep by 3 feet across.

    Only one type of plastic pipe has been approved for use with compressed air. That pipe, Acrylonitrile-Butadiene-Styrene (ABS), is marked on the pipe as approved for compressed air supply.

    By law, employers must protect their workers by avoiding the use of unapproved PVC pipe in such systems. Existing compressed air systems which use PVC piping must be completely enclosed, buried or adequately guarded according to specifications approved by a professional consulting engineer.

    NOTICE TO EMPLOYERS: If you have questions about the suitability of a material for air system piping, call Labor and Industries at the number listed above for a free consultation.

    NOTICE TO EMPLOYEES: If you suspect that a pressurized PVC piping hazard exists, bring it to the attention of your employer. If you do not obtain satisfactory results, you may file a confidential complaint with the Department of Labor and Industries. Complaints are investigated promptly.

    THE INDUSTRIAL COMMISSION OF ARIZONA
    DIVISION OF OCCUPATIONAL SAFETY & HEALTH
    P.O. BOX 19070
    PHOENIX, ARIZONA 80005-9070

    HAZARD ALERT

    We have recently been made aware of a potentially serious hazard involving the prohibited use of unprotected plastic (PVC( piping to transport compressed air and other compressed gases in above ground installations.

    While in Arizona we are not aware of any incidents of ruptured or exploding plastic pipes, States such as Washington and Texas have experienced incidents and injuries. Despite the lack of incidents in Arizona, we full recognize the potential for similar occurrences in this State and thereby request that you review your facilities and replace any such unsafe installations.

    The Arizona Division of Occupational Safety and Health will be providing a program of awareness, assistance, and enforcement. This notice will be going to representatives of industry associations, labor organizations, print and electronic media.

    Through our consultation and training program we will be providing assistance based upon requests received from employers. Through our compliance programs, we will be conducting unannounced inspections to ensure compliance with manufacturers' specifications and American National Standards Institute and American Society of Mechanical Engineers' Standard B 31.8-1986, which limits the operating pressure of plastic piping distribution systems to 100 pounds per square inch (psi) and prohibits the installation of such systems above ground except where the above ground portion of the plastic service line is enclosed in a conduit or casing of sufficient strength to provide protection from external damage and deterioration.

    If you need assistance, please don't hesitate to call the Industrial Commission's Arizona Division of Occupational Safety and Health at 255-5795.

    Tim Arbogast, Director


    PLASTICS PIPE INSTITUTE
    355 LEXINGTON AVENUE, NEW YORK, N.Y.10017
    212-370-7341
    RECOMMENDATION B
    THERMOPLASTIC PIPING
    FOR THE TRANSPORT OF COMPRESSED AIR
    OR OTHER COMPRESSED GASES

    Adopted January 19, 1972

    The Plastics Pipe Institute recommends against the use of thermoplastic pipe to transport compressed air or other compressed gases or the testing of such piping with compressed air or other compressed gases in exposed above ground locations, e.g. in exposed plant piping. It is recommended that all thermoplastic piping used to transport compressed air or other compressed gases be buried underground or encased in shatter-resistant materials. In designing thermoplastic piping to transport compressed air or other compressed gases, the strength at the operating temperature, the pressure, the energetics, and specific failure mechanism need to be evaluated.


    Colonial Engineering Inc.
    Thermoplastic Piping Systems
    To Whom It May Concern:

    From time to time, I receive inquiries as to the suitability of using PVC pipe land fittings in compressed gas piping systems. While the benefits of use may be enticing, it is a very dangerous and, in some states, illegal thing to do. For example, MIOSHA (Michigan's branch of OSHA) prohibits the use of PVC plastic in compressed gas systems unless properly encased in steel, cement, or some other approved material. Please check your local and state regulations.

    The main problem with using PVC pipe and fittings for compressed gas is not that it spontaneously explodes but that PVC is a brittle material that can be broken or shattered with external force unless properly protected. Compressed gasses can be best described as being analogous to a coiled spring. When a PVC pipe or fitting fails when under stress from compressed gas it literally explodes like a bomb, sending shards of plastic flying several feet in all directions. Liquids, on the other hand, being compressed by only 1/10th of 1% contain very little stored energy. When pressurized systems with liquids fail, the energy is dissipated very quickly, thereby creating a much lower potential for hazard.

    Colonial Engineering does not recommend the use of PVC plastic pipe fittings in compressed gas service.

    If you have further questions regarding this matter please feel free to contact me directly.

    Sincerely,

    Jack Roach


    ESLON THERMOPLASTICS, INC.
    P.O. BOX 15894, CHARLOTTE, NC 28210
    DATE: July 11, 1988
    704-889-2431 800-438-7881
    INTEROFFICE MEMO
  • K2ConceptsK2Concepts Posts: 13,443Administrator El Jefe

    TO
    Eslon Sales Force

    FROM
    Terry McPherson

    SUBJECT:
    COMPRESSED AIR AND PLASTIC PIPE

    The dangers involved in using rigid vinyl piping products for compressed air transport are well known in our industry. Numerous disclaimer bulletins and letters have been circulated for almost three decades. It will not surprise you to learn that our government has just recently recognized the problem.

    Attached you will find a copy of a memorandum that was issued by the "U.S. Dept. of Labor, Occupation Safety & Health Administration" (OSHA). You may wish to give copies to your customers and any other interested party. The government has finally made this danger "official."


    PETER A. SCHUSTER
    210 E. Grove Street Kawkawlin, MI 48631
    (517) 684-6135
    October 4, 1989

    Dear Regulator:

    RE: Testing Product Lines of Underground Storage Tanks

    I am alerting you that there is a device on the market for pressure testing product lines, used in conjunction with tank testing, which is not safe. This device, manufactured by Horner Creative Products, 413 State Park Drive, Bay City, Michigan 48706, utilizes a plastic (PVC) cylinder which is attached to the pipeline, filled with gasoline, and then up to 100 PSI air pressure applied to the cylinder.

    Not only have the manufacturers of PVC indicated for years that "extreme dangers" are involved because of its potential to explode, but they have notified Mr. Horner via their distributors, that they do not want him using their material (PVC) to make his line tester. He has thumbed his nose at the manufacturers of PVC, and continues to market this product. The use of PVC for compressed air or gas systems has been prohibited by several states - copies of their hazard alerts enclosed.

    As a responsible regulator it is only proper that you be aware of this device being utilized nationwide by hundreds of unsuspecting operators. I have documented three failures of this product line tester to date. Fortunately no injuries have yet occurred, but there is obviously an imminent danger to the operator and to the public. There have been documented cases of similar misuse of PVC in compressed air or gas systems where injuries have occurred.

    Please, before someone gets killed, or seriously hurt, help remove this product from the marketplace. Obviously Mr. Horner will not remove it without pressure being applied from you.

    Should you have further questions, or I can be of further service, please feel free to call on me.

    Warm regards,

    Peter A. Schuster

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  • K2ConceptsK2Concepts Posts: 13,443Administrator El Jefe
    I'm pretty sure they got their point across...and that's just one page off the OSHA website...

    All I'm saying is be careful...you can choose to do what you wish...
  • FWHydroFWHydro Posts: 445Member ✭✭✭
    Dang. My head hurts from all this knowledge throwin down. Note to self. NO PVC.

    We used the rapid air system. Had our whole shop ran with 5 air stations in a couple hours.
  • K2ConceptsK2Concepts Posts: 13,443Administrator El Jefe
    I have heard that is a good system...if I didn't know copper so well? I would have done that...
  • TsunamiTsunami Posts: 4,952Member, Business Ninja ✭✭✭✭✭
    Just one more thing to add and I might get some hate for this but so be it. Are we using all this data from a government agency. From The same government that said in the seventies that we are heading into an ice age and now it contends that forty years we are heading into man made global warming. Believe half of what you see, and nothing you hear. Just my 2 cents We dont know any of the details of the explosions. Did they use schedule 40 or worse. Was there machinery near that caused excessive vibration to the pipe. The government is reactionary to any situation. And there are people sitting in desks in every state that think it's their job to save the world. Get real. Most of those idiots can't walk and chew gum at the same time. And a letter signed by the Honorable Senator DeConcici doesn';t mean crap if you know anything about him. Anti gun boy. I guess he wants to control all thing that go boom.
  • K2ConceptsK2Concepts Posts: 13,443Administrator El Jefe
    Easy Dave...who hurt you?...
  • HardeightHardeight Posts: 584Member ✭✭✭
    Some of those letters are from engineers in the private sector. They just have the memos posted on OSHA's website.

    I second the Rapid Air system. I think I went the their MaxAir line.
    You can run a continuous loop with no unions and just T off you main line. Less chance for leaks.
  • TsunamiTsunami Posts: 4,952Member, Business Ninja ✭✭✭✭✭

    Easy Dave...who hurt you?...

    The ice cubes did. Not recomended. Maybe I come off a little agitated by our government. But let me remind a few of you that I have been in business for 22 years in the great state of Washington where a few of those letters came from. I am very aware of the B.S For instance we give granite remnants away and we put them in a wooden crate in front of the shop. People drive by if they see something they like they throw it in their car, Now this crate is 5 feet from the storm drain. The city said I had to have a completely sided container to hold the granite pieces. DId you get that! A sided container to keep rocks away from a storm drain. It's not the size of the rocks, the drain has a 1" grate over it. We'll here's the best part. They give me adequate time to resolve the problem. I went to the farm supply to get a rubbermaid field water tank.The state picks up the tab for 75% of the cost. That's our government lubing and screwing me at the same time. Trust me after 22 years i have lots more of those stories. If and when the government decides it wants to regulate this industry you can kiss the small mom and pop shops good-by. Just venting. It felt good.
  • K2ConceptsK2Concepts Posts: 13,443Administrator El Jefe
    I have long said that...sooner or later it is bound to happen...
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