Flat gate valve features:

1. The sealing structure of the valve seat should be pre-tightened with elasticity, and the upper and lower sealing seats should be sealed at the same time. The valve seat and the seal are always face-to-face sealed.

2. The valve seat has a self-cleaning function and is not subject to direct air flow during valve opening or closing. The seat should be made of lubricated, non-abrasive material.

3. The failure of the valve actuator will not affect the rest of the valve. Repairs and replacements can be performed without removing the valve.

(1) Yoke bushings: Aluminium bronze yoke bushings are equipped with needle thrust bearings to minimize operating torque.

(2) Stem: Thread length up to bracket; Pin and spot weld; Stable.

(3) Pressure seal: The structure is simple. The configuration of the segmented retaining ring and the silver-plated mild steel gasket helps to disassemble and achieve the best bonnet seal.

(4) Seat ring: The welded seat ring is perpendicular to the flow passage and is easy to maintain.

(5) Actuator: These valves can be equipped with electric, hydraulic or pneumatic actuators. Standard manual handwheels are available for DN300 and below, and helical gear operating mechanisms are available for DN350 and above.

(6) Yoke: The fully assembled yoke is subjected to seismic tests and is easy to maintain and install the actuator.

(7) Capping: Two-piece, self-adjusting gland to avoid being ejected.

(8) Integral rear seat: Hard face, longest service life.

(9) Disc: The spring-loaded disc is self-adjusting and reduces the torque requirement of the actuator.

(10) Integral stop: Integral casting bracket stop device, positioning and assembling the bracket valve flap, making the valve seat more stable and reliable.

4. The valve body has two casting and welding structures.

5. The valve seat adopts the O-ring seal and the floating seat structure with pre-tightening force, so that the valve inlet and outlet are sealed in both directions; and the opening and closing moment of the structure is only 1/2 of the ordinary valve, which can easily open and close. valve.

6. The metal-to-metal sealed valve has an oil injection structure outside the valve body. The grease enters the valve sealing surface through the grease injector and the valve seat, so that the valve achieves zero leakage.

7. The valve seat adopts PTFE on the sealing surface, and has double sealing of PTFE to metal and metal to metal. The PTFE sealing surface also clears the role of the gate dirt.

8. Gates and seats are treated with special techniques, spray-welded carbide, and wear-resistant PTFE to achieve a double seal. It can be double-protected by oil-filled auxiliary seal, and the seal is more reliable and has longer service life.

9. Gates with diverter valves, whether fully open or fully closed, are always in line with the sealing surface and the sealing surface is protected from direct media erosion, thus extending the service life.

10. When the valve is fully open, the channel is smooth and straight, and the flow resistance coefficient is very small. There is no pressure loss and the pipeline can be cleaned through the hair bulb.

11. The valve adopts the packing structure with self-sealing ability, which does not need to be adjusted frequently. It is extremely light to open and close, and the seal is reliable. There is an auxiliary seal grease injection structure at the stuffing box, and the sealing performance is absolutely reliable and truly achieves zero leakage. The drawbacks of the most common valve filling are the most easily leaked.

12. When the valve is closed, it can automatically remove the high pressure inside the chamber to ensure safe use.

13. Fully enclosed structure, good protection performance, can adapt to all-weather requirements.

14. The valve is provided with an indicator rod or observation window to indicate the opening and closing of the valve.

Flat gate valve uses:

Flat gate valve is suitable for natural gas, petroleum, chemical, environmental protection, urban pipelines, gas pipelines and other transmission pipelines, venting systems and gas storage devices, used as opening and closing equipment. Z43 type single gate plate gate valve with diversion hole is suitable for long-distance pipelines for natural gas exploitation and purification.

Flat gate valve diameter range: DN25 ~ 1200 Pressure range: 0.6MPa ~ 45MPa 150Lb ~ 3000Lb

Diverted gate plate gate valves are used for pipelines that require clearing through the ball, and no diversion holes are used for pipelines that do not require ball clearing.