Model Number

• 850/851 Series (26)
• 850R/851R Series (26)

Outlet Connection

• 1-1/2" (52)

Pressure Relief Setting

• Custom (4)
• 150 PSI (4)
• 175 PSI (4)
• 200 PSI (4)
• 225 PSI (4)
• 250 PSI (4)
• 275 PSI (4)
• 300 PSI (4)
• 325 PSI (4)
• 350 PSI (4)
• 375 PSI (4)
• 400 PSI (4)

Valve Finish

• Anodized Aluminum (26)
• Ductile Iron (26)

Temperature Range

• (')-20°F to 275°F (48)
• -20°F to 275°F (4)

Brands

• Cyrus Shank (52)