A check valve is a one-way valve that allows flow in a single direction and automatically closes to prevent reverse flow (backflow). It operates by line pressure and flow, with no external handle, protecting pumps, water heaters, and supply lines from backflow.
| Property | Typical value |
|---|---|
| Type | Automatic, one-way (non-return) |
| Material | Brass or stainless steel body; spring and disc/ball with elastomer seal |
| Common sizes | DN15–DN50 (1/2"–2") typical residential |
| Working pressure | Typically up to PN16–PN25 (indicative; confirm against datasheet) |
| Temperature range | Typically −10 to 100 °C depending on seal (varies) |
| Connection | Threaded, solder, or wafer |
| Standard | Commonly to EN 13959 / EN 12288 or equivalent (varies) |
Indicative / typical values for planning — actual products vary by manufacturer and standard. Confirm the final spec sheet before ordering; we do not publish fixed prices, request a quote for current offers.
Installed on pump discharge, water heater cold inlets, booster systems, and supply connections to prevent backflow and protect equipment. Spring-loaded types work in any orientation; swing types are typically horizontal.
Send your sizes and quantities (or your floor plan) — our team specs and supplies against it.
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