TVD check valve is soft seal check valve with slanted seat. The disc can be opened widely at lower flow rate with cost saving.
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.
Design principle: disc open/close follows the water flow, prior to zero velocity of the flow
Nickel-based welded seat with the advantages of corrosion 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 standard 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
Body: ductile iron EN-JS 1030 (GGG40)
Disc: ductile iron EN-JS 1030 (GGG40)
Sealing ring: EPDM, NBR, PTFE
O-ring: EPDM, NBR, PTFE
Shaft: stainless steel 1.4021
Bushing: bronze
Body: epoxy coated both inside and outside (severe anti-corrosion for buried)
Disc: epoxy coated (rubber covered or nylon coated on request)
