Check valves provide one way flow control to prevent backflow in piping systems. Key benefits Protect pumps meters and downstream equipment from reverse flow and potential damage Reduce contamination risk by stopping backflow into the supply Simple reliable passive operation with no external power source required (model dependent) Core attributes Function: allows fluid to flow in the designated direction and automatically closes to reverse flow Compatibility: available in variants to suit different fluids and systems; verify model material and pressure ratings for your application Size: offered in multiple nominal sizes to fit standard piping connections; refer to the product size chart for exact options Material: body and seal materials vary by model; common options include brass stainless steel and durable plastics; select based on fluid and environment Performance: designed for low flow resistance and fast response to backflow; intended to provide leak tight shut off under rated conditions How to choose Match the valve material and pressure rating to your fluid type temperature and operating conditions Ensure the connection type and size align with your piping Check the acceptable backflow prevention performance and installation orientation per the model's specifications Use scenarios Residential cold water line connected to a lawn irrigation system to prevent irrigation water from flowing back into the home supply Commercial or municipal water distribution to protect drinking water from potential backflow in irrigation or cross connected systems Pneumatic or hydraulic systems in a workshop or factory to stop reverse flow when equipment is shut down or when regulators are bypassed