Paramount Pump Mount Check Valve w Tubing (005 402 3361 00) generic A properly selected LX circulation A properly selected LX circulation pump helps maintain system continuity while preserving access to related parts and service support that make future upkeep easier A breaker like this is useful because it helps protect electrical circuits by interrupting power when abnormal conditions occur A pump mount check valve helps maintain one way flow in a compatible equipment setup Pump mounted check valves are useful because they help protect directional flow right at a key equipment point rather than farther down the line