UL listed fittings for C900 PVC pipe are available. They are ductile iron mechanical joint fittings meeting AWWA C153 and ductile iron flanged fittings meeting AWWA C110. C900 PVC fabricated fittings and C907 molded PVC fittings are not UL list. C900 pipe is designed with equivalent outside diameters as ductile iron pipe so ductile iron MJ fittings, valves and similar appurtances are compatible with C900 PVC pipe for use in fire systems.
