Conbraco Double Check Valves

The Conbraco Series 40-100 Top Entry T2 Double Check Valve Assembly is designed to protect against backflow from a cross-connection of non-health hazard pollutant. Within the assembly are two mechanically independent, spring-loaded poppet type check valves set in an integral cast bronze body. Both check valves are designed at an inclined angle upward from the horizontal centerline of the assembly, and all test cocks are mounted at the top to assure easy access during repair and maintenance when unit is installed in a pit or tight places.

Features
Top access for testing, repair and maintenance
Corrosion resistant
Low head loss
Interchangeable poppets and springs
Replaceable seats
Comes standard with Apollo full port ball valves with stainless steel handles
Maximum working pressure 175 psig
Temperature range 33F-180F

Operation
During normal flow conditions, the two check valves are held off their seats, supplying water downstream. Each check valve is designed to maintain a minimum of 1 psi across the valve during normal operation. Should the downstream pressure increase to within 1 psi of supply pressure, both check valves will close to prevent a backflow condition.

Approvals
The Series 40-100 Top Entry is approved under ASSE 1015, AWWA C-510, CSA B64.5 and USC’s FCCC&HR. Contact local water authorities for installation/service requirements.

Materials
Part Materials
Body and covers Bronze
Springs Stainless Steel
Poppets Glass-Filled Celcon
Seat discs Silicone Rubber
Replaceable seats Glass-Filled Noryl
Fasteners Stainless Steel


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