Hi-Tech Butterfly Valves India Pvt. Ltd.

The inherent design of the dual plate check valve results in significantly reduced weight when compared to conventional full-bodied swing check valves. As valves increase in size the dual plate check valves can be as little as one fifth the weight of the equivalent full-bodied unit. This results, savings in initial cost, space and pipe support element installation.
Hi-Tech dual plate check valves use an internal retention method which does not encroach on the gasket sealing surface. Other retainer-less designs have an internal retention method incorporating a special key and retaining screws. These components encroach on the serrated sealing face area restricting the kind of gasket that can be used. Furthermore, the screws can corrode making maintenance difficult.
Dual plate check valves are designed such that the discs are hinged at their sides like a door, eliminating the effect of gravity. Consequently, very little energy is needed to open the valve and maintain this position, resulting in lower energy costs.
The heart of each valve is the seat/seal interface. Hi-Tech valves are manufactured using the most updated machining methods and equipment to achieve maximum flatness with a fine lapped finish. The end result is valves that easily meet and exceed test requirements of API 598 for metal-seated check valves.
For potentially severe applications, a high torsion spring ensures the valve closes as quickly as possible.

Size Range	Class
2" - 72"	PN 6/PN 10/PN 16/Class 150/ Class 300 / Class 600 / Class 1500
End Connection	Flanged / Lug / Wafer / RTJ

Design Standard	API 594 / API 6D
Testing Standard	API 598 / BS 6755 I
Face To Face	API 594 / API 6D
End Connection	ANSI B 16.5, BS 10 Table, AWWA C 207, IS 6392, ASME B 16.47, etc.

Automatic

Shell	WCB, CF8, CF8M, CF3, CF3M, CF8C, CN7M, CD4MCu, Hastelloy, Inconel, Duplex Stainless Steel
Trim	WCB, CF8, CF8M, CF3, CF3M, CF8C, CN7M, CD4MCu, Hastelloy, Inconel, Duplex Stainless Steel