TRIPLE-OFFSET METAL-SEATED BUTTERFLY VALVES

Advantages andFeatures  

◆  Bi-directionalzero-leakage sealing. According with standard API 598 and ANSI/FCI 70-2 ClassVI.

◆  Optimized disc/shaft andinside cavity diameter makes it capable to achieve a high flow coefficient (Cv,Kv) and reduce the pressure loss.

◆  The separate sealingring design make it possible to adjust the sealing between sealing ring itself,ensuring the sealing performance is reliable. And the face to face contactbetween valve disc ring and valve body can ensure no friction and locking, sothe valve torque is small.

◆  The valve can achievethe security seal by the contact force from metal on metal instead of relyingon the medium pressure and/or mechanical positioning.

◆  The stable torque canensure the reliability of Bi-directional sealing.

◆  When open the valve, thepressure angle is greater than the frictional angle, the disc separates fromthe valve body sealing ring completely and immediately which can eliminate thefriction between the valve body sealing ring and disc sealing ring, and extendits service life.

◆  Using internalprotection ring of the bearing to prevent intrusion of impurities, enhancingthe reliability of the valve

◆  The valve is suitablefor various conditions with the detachable and replaceable seat. The valve bodysealing ring and the disc sealing ring system can be replaced on site which canlower the maintenance costs.

◆  The packing gland iscomposed of 2 parts to avoid the stem locking caused by offset, and allow thestem-packing regulate on site.

◆  All parts of valve areinterchangeable and replaceable.

◆  The valve is “IntrinsicallyFire-safe”.