WEH^® CNG Check Valves for Natural Gas Vehicles & Infrastructure

Backflow Prevention for Natural Gas Vehicles & CNG Filling Stations

Wherever natural gas is intended to flow in only one direction, WEH® Check Valves provide a reliable solution. Whether in passenger cars, trucks, buses, or stationary systems – WEH CNG backflow preventers protect pipeline systems from unwanted reverse flow and enhance operational safety. Depending on the application, versions are available for both vehicle and fueling station integration. The valves are designed in accordance with DIN EN 736-1 and, depending on the model, meet the ECE approval requirements for use in road-licensed vehicles.

Compact, durable & flow-optimized

WEH® CNG Check Valves stand out with their robust stainless steel housing, intelligent seal configuration, and durable design. This ensures optimal protection of sealing components even in the presence of contaminated natural gas. The flow-optimized design allows for virtually silent opening and closing—maximizing operational safety while minimizing maintenance requirements. Thanks to various connection configurations, the valves can be flexibly integrated into existing systems—from fueling stations to onboard vehicle networks.

Any Questions? We’re Happy to Help.

Whether it’s product advice, technical questions, or custom solutions – our experts are happy to assist you personally.