Integral shutoff valves isolate flow for inline maintenance, and a top-entry cover provides easy access to internal components. These valves meet NSF/ANSI 61 for use with drinking water. For maximum protection from system contamination, they consist of a primary check valve and a secondary check valve. If the first check fails to close when flow stops or reverses, the secondary check valve engages to prevent backflow. A strainer prevents debris from blocking the check valves.

Keep backflow from contaminating your drinking water supply—these valves meet NSF/ANSI 61 for use with drinking water. They consist of a primary check valve and a secondary check valve. If the primary check fails to close when flow stops or reverses, the secondary check valve engages to prevent backflow.

Single-union valves have a union fitting on one end.

Double-union valves have a union fitting on both ends.

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For maximum protection from system contamination, these valves have two integral check valves with a vent between them. If the primary check valve fails to close when flow stops or reverses, overflow is discharged through the vent and the secondary check valve prevents backflow.

Strainers prevent debris from blocking the check valves.

Chrome-plated brass valve is more corrosion resistant than plain brass valves.

Valve with an unthreaded vent is commonly used on laboratory faucets and other applications with intermittent flow. It discharges overflow directly and should not be installed in areas where spillage could cause water damage.

Valves with a threaded vent can be connected to drain pipes to prevent spillage. They are designed for applications with continuous flow and are often installed on water supply lines to boilers, processing tanks, and other equipment.

For technical drawings and 3-D models, click on a part number.