PHB - HIGH PERFORMANCE BUTTERFLY VALUE
Wafer & Lug bodies butterfly valve for bi-direction, dead-end service are offered as standard in KS/JIS 10K, 20K, ASME Class150 and 300 ratings. The design of Double
offset sealing assure smooth low-torque operation and reduce seat wear. Extended neck length allows adequate insulation is easily accessible for mounting actuator.
Valve has a disc stopper to prevent disc over-travle of disc, minimizing possible seat damage with extending the service life of valve.
The disc has been hydromechanically designed to maximize flow and resistance, providing a high Cv value. The disc is spherically mechined and hand polished disc edge provides bubble-tight shut-off at minimum torque.
One piece through stem design achieves high strength and disc control. Optional mounting plate is available to international standard ISO 5211. Non-lubricated,coated bearings securely support the stem and minimize bearing friction and operating torque.
Securing the butterfly disc to the valve shaft and permitting accurate disc closure for consistent sealing and positive shut off.
V-packing are designed to give excellent resistance to pressure and effective at both low and high pressures with little of no glaned adjustment required.
All valve shall be tested for leakage at rated internal pressure, and we can accomplish zero defects through a wider range testing process.
With a locking spring loaded, lever operator has directional pointer for valve disc position indication with easy-grip handle.
- High performance applications such as steam, chill water, ultility lines, oil, natural gas, air and process lines.
Valve nominal diameter - 1 1/4 : (32A) ~ 24”(600A)
Face to face dimesion- KS / JIS 10K : KS B 2813 46 Series, ISO5752, API 609 A - KS / JIS 20K, Class150 : API 609 B
End connection - Wafer, Lug - KS B1511 10K, 20K, ASME B 16.5
Testing - KS B 2813, API 598, ASME B16.5
Temperature -from -20 up to 250 (up to +380 for HT Version - contact us)
The working temperaure depends on the media and on the material of the seat.
Vacuum service down 0 absolute bar.
Maximum fluid velocity, under working pressure. - 4 m/sec for clean gases.
Features and Advantages
Component and Material
Contac your sales representative for appropriate materiala for specific service.
Double Offset Stem & Disc feature
The double offset design of the valve assures reduced seat wear and bi-directional, zero leakage shutoff throughout the full pressure range. At the initial point of disc opening, the offset disc produces a cam-like action, pulling the disc from the seat. This cam-like action reduces seat wear and eliminates seat deformation when the disc is in the open position. When open, the disc does not contact the seat, therefore seat service life is extended and operating torques are reduced.
Pressure Temperature Rating
Kinds of Seat
Torque & Design Pressure
Torque & Design Pressure
Cv (Flow Coefficients) - PHB Series
Cv Value - Travel Position
PHB SERIES - WAFER TYPE-KS/JIS 10K - BARE STEM
Dimension are subject to change without notice.