Model Number

• SR1 (14)
• SR1R (7)
• SR2 (10)
• SR3 (11)
• SR4 (9)
• SRH1 (16)
• SRH2 (13)
• SRH3 (19)
• SRH4 (12)
• SRH5 (13)

Inlet Connection

• 1/2 in (60)
• 3/4 in (39)
• 1 in (12)
• 1-1/4 in (13)

Outlet Connection

• 3/4 in (37)
• 1 in (42)
• 1-1/2 in (21)
• 1-1/4 in (23)
• 2 in (1)

Pressure Relief Setting

• 150PSI (10)
• 250PSI (11)
• 300PSI (10)
• 400PSI (8)
• 160PSI (1)
• 165PSI (1)
• 175PSI (9)
• 180PSI (6)
• 185PSI (1)
• 190PSI (2)
• 200PSI (10)
• 214PSI (1)
• 225PSI (7)
• 230PSI (2)
• 235PSI (5)
• 255PSI (2)
• 260PSI (2)
• 265PSI (4)
• 275PSI (9)
• 280PSI (1)
• 290PSI (1)
• 325PSI (5)
• 340PSI (1)
• 348PSI (1)
• 350PSI (10)
• 362PSI (1)
• 375PSI (3)