Hydraulic & Pneumatic Standards

[ssommers]

I'm starting to create a controls purchasing specification for new equipment. I've got the electrical standards done. NFPA 79 & NEC are my basic references. I've also included a preferred components list, CAD drawing # structure, etc. Are there equivalent standards for Hydraulics & Pneumatics? TIA, Susan

[TConnolly]

Yes, Susan. There are standards. These standards are set by the NFPA. But in this case it is not the same NFPA that you are refering to above, it is the National Fluid Power Association. http://www.nfpa.com/Standards/Standards_Overview.asp

[ssommers]

I knew about the other NFPA (National Fluid Power Assn). My question is what are the standards numbers for Hydraulics & Pneumatics on machines? I just want to buy the right ones since I can't see them before buying them. Thanks, Susan P.S. That is one thing the National Fire Protection Assn. did right. I love being able to quickly look up a reference online even though I own the books.

[Clay B.]

I am not sure what you mean by standard numbers. The standards we use for Hydraulics and Pneumatics are based on pressure and brand name. On Pneumatics componets we specify a 150 psi rating due to our 140 psi plant air pressure. Hydraulics are rated at 5000 PSI due to pressure as well. We specify thread type... NPT for Pneumatics and JIC for Hydraulics this keeps the number of fittings we have on hand to a minum We specify brand so tech's get fimilar with the part numbers and what they mean. Seems like every manufactor has their on numbering scheme.

[fluidpower1]

Try these sites to see if this is what you are looking for: http://webstore.ansi.org/ansidocstore/find.asp? http://www.iso.org/iso/en/ISOOnline.frontpage The ISO page has 1219-1 & 1219-2 to cover schematic drawings I know. How much more I have neve found out.