Piston Gravity Circulation Non-Return Check Valves | Gestra Gravity Circulation Non-Return Check Valves | Gestra Gravity Circulation Non-Return Check Valves by Gestra are designed to prevent reverse flow in piping systems, ensuring efficient and reliable operation. These valves utilize gravity to maintain a closed position when there is no forward flow, automatically opening when the flow resumes. Ideal for applications where backflow prevention is crucial, they are... View