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|Product Name:||Ductile Iron Ball Valve||Material:||Stainless Steel,WCB, Ductile Iron，|
|Color:||Blue，Black，Customer's Request||Connection:||Flange Ends, Threaded,Welded|
|Usage:||Control Water Flow|
cast iron plug valve,
double offset valve
Eccentric Half Ball Valve, Rubber Sealed Ball Valve, Ductile Iron
Eccentric semi-ball in its entirety stiffness, low head loss, and strong anti-pollution decontamination capabilities, advantages, can adapt to high flow, high concentration of impurities of water, oil, gas and other media environment, is the ideal upgrade products of the traditional gate valve, butterfly valve etc.
1. Suitable for sewage, water, sea water system.
2. The system is suitable for flow regulation, pumping pressurized pipeline system, and the vent valve at the bottom of the dam.
3. At the same time can be used as a safety valve, burst pipes and pressure reducing valve , etc.
Product structure and features:
1. Valve stiffness: spherical valve spool for the eccentric crank overall structure. Valves can adapt to high velocity and greater than the flow conditions. Running a small opening and high pressure conditions, the valve no vibration, no noise.
2. The valve port for manifold design, flow resistance is smaller than butterfly valve.
3. Valve to achieve a reliable seal. Eccentric structure, that is installed between the center and the center of rotation of the spool valve has a eccentricity ,when the valve is fully closed, if we shut down at a slight angle, the valve seat and valve sealing surface will produce interference between the spherical core, which will have a great pressing force between the two surfaces to form higher than the pressure seal, reliable seal. The eccentric amount value of the valve is carried out rigorous theoretical calculations( hydraulics calculation, eccentric shaft bending stiffness, torsional stiffness calculation, ball cap and seat deformation calculation) to meet the two-way valve seal requirements.
4. The sealing surface wear is small. When the valve is fully open, the valve seal face “hidden” in the valve body from direct flushing fluid. Hard sealing valve sealing surface of stainless steel laser hardening process, the valve seat sealing surface using pure nickel welding process, the hardness of the two materials with a reasonable, running ,good resistance to silt erosion resistant. Hard seal seat in a certain range gate” float” to compensate for fabrication, assembly and wear errors. Soft seal spool nitrile rubber as a whole package, wear- resistant, corrosion-resistant.
5. Seal surface has self-purification ability. Attached to the sealing surface for the deposition of dirt nearby, close the valve once each, can be cut.
6. The valve composed by valve body, valve cover, valve seat, eccentric crankshaft and seal assembly parts, parts quantity is less, structure is compact. The appearances such as the length of the valve structure, installation height size is smaller than gate valve, globe valve, etc.
Contact Person: Zhu Jun