- stainless steel spring
- solid brass housing
- prevents backflow of casting water
- safe mounting due to thread
If you use an irrigation system for your grow, you should use a check valve. For example, if there is negative pressure in the domestic water system and your irrigation system is connected to it, the non-return valve prevents contamination of the drinking water. The built-in NBR membrane and the stainless steel spring are extremely durable and can withstand temperatures of up to 100°.
3/4 INCH BRASS CHECK VALVE (20MM) X 1