Resilient Seated Gate Valve Rising Stem OS&Y serve to cut the medium flow in the piping system, widely used in the field of potable water, water supply and drainage, sewage disposal, irrigation, fire protection as well as chemical and energy industry.
|Face to Face||EN558-1 Series 3/14/15|
Clockwise closing (CWC) as standard, anticlockwise closing upon request.
Operation: Hand wheel,Gearbox,Electric actuator
Bonnet bolts are in Galvanized Carbon Steel, and sealed with hot melt to prevent corrosion. Other materials upon request.
Gland bolts are in SS304 to prevent corrosion.
O-ring bonnet gasket wraps each bolt to prevent corrosion.
100% testing before packing and delivery
Liner Sealing face – to get lower operate torque.
Most factories’ design is the same lever sealing face.
while when the valve closed, the increasing inlet pressure will push the disc shift and press the valve body, which will cut thedisc rubber of position “A” during long term use.
IVALVE has been aware of this defect and improve the design to avoid the hurt mentioned above,and by the new design,thedisc service life has been extended.