Features lnclude：    

Ductile lron/Carbon steel/Stainless steel Check Valves    

1"to 2"Size Range    

Ductile lron: 1000to2000WOG Pressure Range Carbon Steel: 2000to5000WOG Pressure Range

Viton Seats    

Threaded ends to ANSI B1.20.1(NPT)    

NACE MR0175