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Dual Check Valves
Dual Check Valves
Lehry Instrumentation & Valves Pvt Ltd manufactures Dual Check Valves. The company is a manufacturer and importer of industrial and domestic valves, with a presence in the industry for more then sixty years. The valve product list is diversified and vast, and includes of gate, globe, angle globe, check, swing check, wafer check and butterfly valves; ball valves – 2-way and 3-way ball; needle and foot valves; fire hydrant, diaphragm, plug, pressure relief, quick closing and air valves; and strainers.
- Water supply systems
- Fire fighting systems
- HVAC systems.
- Maximum working temperature – -18°C to 80°C
- Seat test pressure (hydraulic) – 10 ml
- Body test pressure (hydraulic) – 16 ml
- Size – 40-600 mm.
- Wafer type design
- No water hammer
- No slumming
- Can be installed in vertical or a horizontal pipe line
- Low wear and tear of seat surfaces
- End connections are designed to suit flanges drilled to BS10-table D, E and F
- ANSI 125/150
- BS4504 (PN10/PN 16)
- IS: 6418 (table 6 to 8) IS: 6392 table 10 to 20 and IS: 1538 (Part V)
- Water hammer is minimised in this design since the closing of valve does not depend upon any back pressure nor flow
- Each plate being half of the size of the swing check valve disc provides straight flow path offering minimal resistance because of the spring's assistance as closing of the valve initiates as soon as flow velocity dips below the designated minimum velocity.
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