Eccentric Half Ball Valve,Ball Valve, Rubber sealed ball valve,WCB
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
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.