Zero flow check valve
DN200-1600, PN6-40

TVD check valve is one kind of soft seal check valve with Slanted seat. The disc can open widely at lower flow rate, can save cost.

The valve can be used for pipe network, drinking water as well as wastewater.

Pump protection

No slam, good performance for water hammer prevention, maintenance free

main features

Design principle : Disc open/close follow the water flow, prior to the flow velocity becoming to zero, the disc fully closed

Nickel-based alloy overlay welded seat with the advantages of corrosion resistance and wear resistance

short closing time by means of slanted seat

The air cushion is adjustable according to the operating conditions to avoid the impact of the water hammer

Coated with epoxy acc. to DIN 30677-2

Soft sealing seat acc. To the standdard of EN 12334

Equipped with solenoid valve and external compressed air, it can be fully opened at any flow rate to reduce flow resistance

Arc-shaped disc