Sell Valves

ItemDescriptionSizePNQ/ty(pcs)1Air Valve - Single Ballto BS 145225mm16402Air Valve - Single Ballto BS 145250mm1673Air Valve - Single Ballto BS 145280mm1614Air Valve - Double Ball, Threaded to BS 1452, BSP Male25mm1645Air Valve - Double Ball, Threaded to BS 1452, BSP Male50mm1626Air Valve - Double Ball, Flangedto BS 1452, BS 4504100mm1617Air Valve - Double Ball, Flangedto BS 1563, BS 4504100mm2518Air Valve - Double Ball, Flangedto BS 1452, BS 4504150mm1619Air Valve - Double Ball, Flangedto BS 1563, BS 4504150mm25110Air Valve - Double Ball, Flangedto BS 1452, BS 4504200mm16111Check Valve, to BS 5153, BS 4504, BS 1452 50mm16512Check Valve, to BS 5153, BS 4504, BS 145265mm161413Check Valve, to BS 5153, BS 4504, BS 1452100mm16714Check Valve, to BS 5153, BS 4504, BS 1563100mm25515Check Valve, to BS 5153, BS 4504, BS 1563100mm401016Check Valve, to BS 5153, BS 4504, BS 1563150mm40117Check Valve, to BS 5153, BS 4504, BS 1452300mm16118Check Valve, to BS 5153, BS 4504, BS 1452400mm161Specification of Air valvesAir valves are flanged mounted or with screwed male threads as indicated in the relative available list and are of the single or double ball pattern.Single ball air valves are incorporating a small orifice and double ball air valves are incorporating one small and one large orifice in a single unit.Small orifice air valves are automatically release air, which accumulates under normal operating pressures.Large orifice air valves automatically release or admit bulk volumes of air during either filling or emptying of the pipeline.Valve bodies and covers are of cast iron to BS 1452 for pressure rating of PN16.Valve bodies and covers are of spheroidal graphite cast iron to BSEN1563 for pressure rating of PN25 bar.Floats, guides and levers are formed by injection moulding of Acrylonitrile Butadiene Styrene or similar approved material.Flanges are faced and drilled in accordance with BS 4504 PN16 or PN25 as indicated in the available list. Male inlet threads are to B. S. P.All valves are marked according to the relevant specification standard, nominal diameter and nominal pressure.Valves are coated internally and externally with an approved non-toxic epoxy coating.Specification of Check valvesCheck valves are complying with BS 5153 standard. They are of the swing type, suitable for vertical and horizontal installation.Valves are double flanged. Flanges are faced and drilled to BS 4504 PN16 or PN25 or PN40 as indicated on the available list.Materials of construction(valve body, door and cover) for PN16 is of cast iron to BS 1452.Materials of construction for PN25 and over are of spheroidal cast iron to BS 1563.Valve seals are of gunmetal to BS 1400 and the hinge pin is of stainless steel carried in non-corrodable bearings.Access to the valve is through a flanged and bolted cover, which allows carrying out all necessary routine maintenance including re-facing of the seal without removing the valve from the line.All valves are marked according to the relevant specification, nominal diameter, nominal pressure and an arrow indicating the direction in which the valve will operate to allow flow to pass.These valves are coated internally and externally with an approved non-toxic epoxy coating.