Main - Heating Index - Conbraco Index - Plumbing Index - Backflow Prevention
3284 - Brass body, for use with cold or hot water to 180°F at 125 PSI. Conforms to ASSE, IAPMO, CSA standards. 3/4" standard hose (3284) or anti-freeze hose connection (3285).
38-100 Series atmospheric type vacuum breaker available in sizes 1/4" to 2".
38P Series - Lead-free design features high-density thermoplastic body; consists of a single check with atmospheric vacuum breaker vent. Tamperproof break-away set-screw; fits 3/4" standard hoses. 125 PSI maximum pressure; 180°F maximum temperature.

40-100 Series Double Check - Sizes 1/2" to 2": Bronze body double check valves with Celcon® poppets and stainless steel springs. Sizes 2 1/2" to 10": Fusion epoxy coated ductile iron body; 85-5-5-5 replaceable seats and stainless steel springs. Full USC-FCCCHR, AWWA, ASSE, CSA, IAPMO approvals. UL classified and FM approved, models 2 1/2" to 10". Top entry double check valves also available; both first and second check valves designed at inclined angle upward from horizontal assembly. Easy installation, repair and maintenance. Maximum working pressure: 175 PSI; temperatures: 33° to 180°F. Sizes: 3/4" to 2".

40-200 Series Reduced Pressure Zone - Sizes 1/4" to 2": Bronze body reduced pressure valves with Celcon® poppets and stainless steel springs. Sizes 2 1/2" to 10": Fusion epoxy coated ductile iron body; 85-5-5-5 replacement seats and stainless steel springs. Full USC-FCCCHR, AWWA, ASSE, CSA, IAPMO and FM approvals. UL classified, sizes: 3" to 10".
Stainless steel models also available for high-purity or corrosive applications in sizes 1/4" through 1".
40-300 Series - Bronze dual check valves with Celcon® poppets and stainless steel springs; in-line testable and repairable; wide range of inlet/outlet thread configurations available. ASSE and CSA approvals. Sizes: 1/2" to 1".
40-400 Series - Bronze body continuous pressure valves with Noryl® poppets and stainless steel springs. ASSE and CSA approvals. Sizes: 1/2" and 3/4".
40-500 Series - Bronze body pressure type vacuum breakers with
polyethylene float and stainless steel springs. Full USC-FCCCHR, ASSE, and
CSA approvals. Sizes: 1/2" to 2".