3681 _ Anti-pollution adjustable check valve - Type EA

Anti-pollution check valves are usually used at the entrance of the water network from the private one, allowing for the circulation of the fluid only in the direction set by the device, avoiding the liquid from flowing back in the opposite direction, this way contact between water systems is avoided, automatically closing should there be conditions for a reflux.

The valve is equipped with two control inlets, the first allows to verify the correct functioning of the check device, the second one allows to make withdrawals with which it is possible to check the contamination of the water in the system.

Tiemme anti-pollution check valves satisfy the requirements set by the norm EN 1717, and are part of category 2 for the risk of water contamination. 

Adjustable anti-pollution check valve, threaded Male/ Female connections UNI ISO 228.

Wide range available, for any installation and connection requirement from G3/4" (DN20) to G1" (DN25).

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