Conbraco Dual Check Valve Backflow Preventer

Out of stock
SKU
00001089

Product Shipping Subject to Factory Availability Need Specifications? See PDF Section Below.

Conbraco Dual Check Valve Backflow Preventer
The Conbraco Series 40-300 Dual Check Valve Backflow Preventer is designed to prevent cross-connections of non-potable water (non-hazardous) into the safe drinking water systems. It is a compact and economical device that is easily installed, serviced and repaired in the line. The device consists of two independently acting, spring-loaded check valves in a corrosion resistant material. It is equipped with three (3) 1/8” NPT test ports for ease of field testing while the valve is in the line.

Features
In-line repairable
In-line testable
Low head loss
Independently acting check valves
Compact and lightweight
Ease of repair and installation
Corrosion resistant
Almost any inlet and outlet connection combination to fit your needs
Maximum working pressure 175 psig
Operating temperature range 33F-180F

Operation
Each of the two spring-loaded check valves is designed to open at 1 psi differential in the direction of flow. They will remain tightly closed until there is a demand of water downstream. If the downstream pressure of the device increases above the supply pressure or there is a reverse direction of flow, the check valves will close to prevent backflow. If the second check valve is prevented from closing tightly, the first check valve will still provide protection from a backflow condition.

Approvals
The Series 40-300 Dual Check Valve (1/2”-1”) is approved under ASSE 1024 and CSA B64.6. Contact local water authorities for installation/service requirements.

Materials
Part Materials
Body and covers Bronze
Springs Stainless Steel
Seat Discs EPDM
Poppet Celcon


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