Official Codes, Standards and Approvals
GA Industries “Distributor Products” consist of a wide range of check valves, air valves, butterfly valves and water pressure regulating valves. These GA products conform to American Water Works Association (AWWA) standards and are primarily marketed through our network of waterworks distributors, many of which stock valves and other specialties to serve the needs of utilities and contractors.

Most flanged valves for water works service in North America are supplied with flanges conforming to dimensional standards developed by the American Society of Mechanical Engineers (ASME) and accredited by the American National Standards Institute (ANSI). Various “committees” within ASME are charged with developing, issuing and maintaining individual standards. The ASME “B16” committees have this responsibility for valves, flanges and flanged fittings. Standardized dimensions for cast iron flanges and flanged fittings are provided in ANSI/ASME B16.1 standard, steel and stainless steel dimensions in the ANSI/ASME B16.5 standard and ductile iron in the ANSI/ASME B16.42 standard. Compliance with the applicable standardized flange and flanged fitting dimensions is voluntary but ensures uniformity so that flanged valves from one manufacturer will bolt to flanges from another.

Standards, Listings and Codes
The following standards, listings and codes apply to various components of Zurn PEX Plumbing and Radiant Heating Systems.

Standards
American Society for Testing and Materials
     • ASTM F876 – Crosslinked Polyethylene (PEX) tubing
     • ASTM F877 – Crosslinked Polyethylene (PEX) tubing and fitting systems
     • ASTM F1807 – Brass insert fittings 
     • ASTM F2098 – SSC rings
     • ASTM F2159 – Plastic insert fittings
CSA International
     • B137.0 – General requirements for thermoplastic pressure piping
     • B137.5 – Crosslinked Polyethylene (PEX) tubing and fitting systems
NSF International
     • Standard 14 – Plastic piping system components
     • Standard 61 – Drinking water system components-health effects

Listings
NSF International
     • Zurn PEX oxygen barrier and non-barrier tubing
     • Zurn PEX XL fittings
     • Zurn PEX CR
     • QickClamp™
     • Qicktite® fittings
     • Zurn PEX supply tubes
International Association of Plumbing & Mechanical Officials (IAPMO)
     • Zurn PEX oxygen barrier and non-barrier tubing
     • Zurn PEX XL fittings
     • Zurn PEX supply tubes
     • Waterflex® water heater connectors
CSA International
     • Zurn PEX non-barrier tubing
     • Zurn PEX XL fittings
     • Zurn PEX supply tubes

Model Codes
The following model codes recognize Crosslinked Polyethylene (PEX) tubing for use in hot and cold water distribution systems:
     • IPC – International Plumbing Code (ICC)
     • IRC – International Residential Code (ICC)
     • National Standard Plumbing Code (NAPHCC)
     • UPC – Uniform Plumbing Code (IAPMO)
     • U.S. Department of Housing and Urban Development (HUD)
The following model codes recognize Crosslinked Polyethylene (PEX) tubing for use in radiant heating systems:
     • UMC – IAPMO Uniform Mechanical Code (IAPMO)
     • IMC – International Mechanical Code (ICC)