Two new ASTM International standards support the use of press-insert fittings used in cross-linked polyethylene (PEX) tubes that distribute potable water and support hydronic plumbing systems for homes and businesses.

ASTM International’s committee on plastic piping systems (F17) developed the new standards, which will soon be published as F3347 and F3348. According to committee member Gary Morgan, codes and standards manager at Viega, the fittings described in the new standards are most commonly used with PEX tubing covered by the existing standards F876 and F3253. 

“Plumbing design engineers will now be able to cite these new consensus-based PEX fitting standards as a part of new job specifications,” says Morgan. “Regulatory code bodies such as the International Code Council and the International Association of Plumbing and Mechanical Officials could also add these standards to the respective tables of allowable fittings to be used with PEX tubing.”

In addition, Morgan says that testing laboratories will now have clear and concise standards to test, which includes all critical dimensional, materials, and performance requirements for each of the covered PEX fittings. 

To purchase standards, contact ASTM International customer relations (tel +1.877.909.ASTM; sales@astm.org).

Media Inquiries: Dan Bergels, tel +1.610.832.9602; dbergels@astm.org
Committee Contact: Robert Morgan, tel +1.610.832.9732; rmorgan@astm.org 

Release #10675