Single/Dual

• Single (517)
• Dual Assembly With Unions (228)
• Dual Assembly Without Unions (229)

Model Number

• 800 OP Series (180)
• 800 Series (192)
• 801 Series (179)
• 801DHC Series (45)
• 805R Series (45)
• 850/851 Series (144)
• 850R/851R Series (144)
• CS5602A Series (45)

Inlet Connection

• 1/2" (641)
• 3/4" (96)
• 1" (141)
• 1-1/4" (96)

Outlet Connection

• 3/4" (641)
• 1-1/4" (45)
• 1-1/2" (144)
• 2" (144)

Outlet Connection Style

• FNPT (830)
• MNPT (144)

Pressure Relief Setting

• Custom (69)
• 50 PSI (12)
• 75 PSI (44)
• 100 PSI (45)
• 125 PSI (45)
• 150 PSI (69)
• 175 PSI (69)
• 200 PSI (69)
• 225 PSI (69)
• 250 PSI (69)
• 275 PSI (69)
• 300 PSI (69)
• 325 PSI (69)
• 350 PSI (69)
• 375 PSI (69)
• 400 PSI (69)

Valve Finish

• Anodized Aluminum (144)
• Black Oxide Coated (138)
• Carbon Steel (137)
• Ductile Iron (144)
• Stainless Steel (411)