Wenzhou, Zhejiang, China
Member Since: 2015
The Q47F fixed ball valve is a new generation of high performance ball valve. It is suitable for long-distance pipelines and general industrial pipelines. Its strength, safety and harsh environment are specially considered during design. It is suitable for all kinds of corrosive and non-corrosive. Sexual medium. Compared with the floating ball valve, when working, the force generated by the pre-valve fluid pressure on the ball is transmitted to the bearing.
Q47F fixed ball valve [Product Description]
Q47 fixed ball valve is a new generation of high performance ball valve, suitable for long-distance pipelines and general industrial pipelines. Its strength, safety and harsh environment are designed at the time of design. Special considerations apply to a variety of corrosive and non-corrosive media. Compared with the floating ball valve, when working, the force generated by the pre-valve fluid pressure on the ball is transmitted to the bearing, and the ball is not moved to the valve seat, so the valve seat does not withstand excessive pressure, so the fixed ball valve The torque is small, the valve seat deformation is small, the sealing performance is stable, and the service life is long, which is suitable for high pressure and large diameter occasions. Advanced spring pre-seat assembly with self-tightening for upstream sealing. Each valve has two seats that seal in each direction, so there is no flow restriction in the installation.
Q47F fixed ball valve [Working principle] The
ball of the fixed ball valve is fixed and supported by two fixed shafts connected to the ball. When closed, the ball will not be displaced by the pressure of the medium. Usually, the upper and lower shafts connected to the ball are equipped with rolling bearings or sliding bearings. To reduce the friction of the journal when opening and closing. Reduce the operating torque. This fixed ball valve is suitable for large diameter ball valves. Q47 hard seals the ball of the fixed ball valve. It is fixed by two upper and lower valve stems. During operation, fluid pressure does not cause the ball to move toward the valve seat, and the valve seat does not deform under excessive pressure. The valve stem part is provided with self-lubricating bearings to reduce friction and the switch torque is small. Both valve seats are pre-tightened by springs. The seal is made of PTFE embedded in the steel solid, and a spring is arranged at the rear of the steel ring to ensure that the valve seat is close to the ball. When the pressure in the valve cavity rises abnormally beyond the spring top tightening force, the valve seat retreats out of the sphere to achieve the automatic pressure relief effect, and the valve seat is automatically reset after the pressure. The advanced structure makes the sealing performance of the fixed ball valve stable and labor-saving, and has a long service life, which is very suitable for long-distance pipelines and general pipelines.
Q47F ball type fixed structural features] [
1, fixed ball design, the relative movement of parts are made of a very small friction coefficient and self-lubricating materials, thus operating torque, in addition to the long-term sealing grease seal, making the operation more flexible;
2, the valve The high platform structure and ISO5211 connection standard enable the installation of electric/pneumatic actuators to be more specialized;
3, using full diameter or reduced diameter design, flow resistance is small;
4, metal hard seal O-type fixed ball valve uses two-way metal movable sealing structure, with automatic compensation and self-cleaning function, superior sealing performance;
5, using fixed ball Design and increase the pre-tightening spring, so that the ball valve has automatic pressure relief function;
6. Each ball valve has two movable sealing seats, which can be sealed in both directions, so the flow direction of the medium need not be considered during installation;
7 It has a fireproof and anti-static structure, and a conductive spring is arranged between the valve stem and the valve body and the valve stem and the ball to avoid electrostatic ignition and ignite the flammable medium.
8. Ensure the safety of the system; 8. Double protection of the refractory structure. When the seal is burnt in case of fire, the sealing parts of the ball valve can form a metal-to-metal hard seal structure;
9. Automatic pressure relief structure, when stuck in the valve chamber of the liquid medium due to temperature rise and vaporized, whereby abnormal rise in pressure in the chamber, the chamber can depend on the medium itself pushes the thrust automatic pressure relief valve seat, thus ensuring the safety valves;
10, alternatively pneumatic, Electric, hydraulic, and pneumatic adjustment, electric adjustment. Please refer to the actuator and regulating valve section of this book for details.
The customer determines the data as follows:
1 fixed ball valve product name and model, 2 fixed ball valve caliber, 3 fixed ball valve use pressure, 4 fixed ball valve with related accessories
Q47F fixed ball valve performance parameters:
Nominal pressure PN (MPa)
|Maximum use pressure||Test pressure (MPa)||Pressure level||Maximum use pressure||Test pressure (MPa)|
|case||High pressure liquid seal||Low pressure liquid seal||case||High pressure liquid seal||Low pressure liquid seal|
|Applicable specification||Structure length||GB12221 ANSI B16.10|
|Flange size||JB79-59 GB9113 HG20592-97 ABSI B16.5|
|Welding standard||GB12224-89 ANSI B16.25|
|Inspection test||JB/T 9092-99 API 598|
|Applicable conditions||Applicable medium||Natural gas, liquefied petroleum gas, petroleum and other media|
|Drive mode||Worm gear transmission, pneumatic, electric, gas-liquid linkage, etc.|