Single/Dual

• Single (156)

Model Number

• 850/851 Series (52)
• 850R/851R Series (52)
• 901/903 Series (52)

Inlet Connection Style

• FNPT (52)
• MNPT (104)

Outlet Connection

• 1-1/2" (52)
• 2" (78)
• 3" (26)

Outlet Connection Style

• FNPT (78)
• MNPT (78)

Pressure Relief Setting

• Custom (12)
• 150 PSI (12)
• 175 PSI (12)
• 200 PSI (12)
• 225 PSI (12)
• 250 PSI (12)
• 275 PSI (12)
• 300 PSI (12)
• 325 PSI (12)
• 350 PSI (12)
• 375 PSI (12)
• 400 PSI (12)

Valve Finish

• Anodized Aluminum (52)
• Ductile Iron (104)

Temperature Range

• (')-20°F to 275°F (144)
• -20°F to 275°F (12)

Brands

• Cyrus Shank (156)