One-way valves are valves that prevent water from flowing in undesirable directions. A one-way valve can function on the basis of resilience or without resilience based on gravity/flow.
One-way valves are available in many versions, some common differences: Made with a single swivel, a double swivel or with flanges/collar bushes. The single swivel one-way valve has 2 PVC connections with one clutch, double-speed one-way valves have 2 clutch swivels and lastly the one-way valves are available fully assembled with 2 collar bushes and flanges.
The one-way valves available with a spring are the CH spring-loaded one-way valve, VDL spring-loaded one-way valve and the HT one-way valve with collar bushes and flanges. The one-way valves available based on gravity/flow are the CH flapvalve with collar bushes and flanges and the CH Y-ball return valve.
The PVC VDL spring-loaded one-way valve is available with a single swifel from 16 to 90 mm. The PVC CH spring-loaded one-way valve is available with a single and double swifel from 16 to 90 mm. The HT one-way valves with flanges and collar bushes are available from 75 to 200 mm.
The CH flapvalves are available with flanges and collar bushes from 40 to 315 mm, the CH Y-ball is available from 16 to 90 mm.