Resilient Seated Gate Valve
What is resilient seated gate valve?
According to the sealing method of the gate valve, the valve can be divided into resilient seated gate valve and metal seated gate valve. resilient seated gate valve refers to the valve that forms a seal on the liquid by deformation of rubber. Compared with metal seated gate valve, resilient seated gate valve have a wider range of application, are more friendly to liquids with a small amount of hard impurities, have a simple production process and are competitively priced.
Resilient seated gate valve type
According to open&closing method
resilient seated gate valve include os&y gate valve and NRS gate valve
According to connection method
resilient seated gate valve include flanged gate valve, threaded gate valve, mechanical gate valve, push fit gate valve
According to pipe which will connected with gate valve
Resilient seated gate valve include gate valve for HDPE pipe, gate valve for PVC pipe, gate valve for DI pipe etc
According to fluid in pipeline
Resilient seated gate valve include water gate valve, oil gate valve etc
Judberd new design resilient seated gate valve advantage
Feature
1, One-piece design of valve stem nut and valve wedge, more solid
2，Nylon guide groove to reduce torque
3，Raised bar design ensures small torque and low pressure seal
4,More low hardness for bigger size EPDM cover of wedge to reduce torque for big valves
How to install resilient seated gate valve?
If you buy resilient seated gate valve ,you really need to know how our valve manufacturer install resilient seated gate valve, check below video to know it
1,Put the installed stem into the valve bonnet
2, Install the stem nut and stem together by rotating the thread
3,Brush oil on the groove where the valve wedge and stem nut fit together
4, Snap the stem nut into the fixed slot of the valve wedge
5, Rotate the valve wedge to the right position
6, Brush oil around the valve wedge which face need to toutch the valve body
7,Put the assembled valve wedge into the valve body
8, Tighten the bolts of valve bonnet and valve body in diagonal order
Why resilient seated gate valve leak?
There are several main common quality problems with resilient seated gate valves
1, with the use of the valve, the stem seal will loss of sealing effect because of repetitive friction, for this problem, judberd’s gate valve is 100% with the upper seal, that is, in the state of the valve wedge fully open, the valve wedge and the valve cover can be sealed directly. The stem can thus be removed and the stem sealing O type ring can be replaced. This ensures that, without stopping the water, the valve O type sealing ring can be replaced and the valve can thus be repaired.
2, As the valve wedge is continuously opened and closed, the sealing of the valve wedge can also become problematic. At this point it is necessary to remove the gate valve from the pipe by adjusting the length of the dismantling joint itself, so that the valve wedge can be replaced and repaired or the entire valve can be replaced.
3,Possible leakage may happen between the gland and the bonnet, because the outside o type ring is damaged or the gland is loose, the solution is to change the outside o-ring between the gland and bonnet,or tighten the gland.
4,If leakage happened at the seal between the valve bonnet and the valve body, that is because the o-ring between the valve bonnet and valve body is damaged, the solution is to replace the damaged O-ring
Judberd Gate valve manual
1,Check the gate valve length and flange dimension standard, to ensure that the valve length and flange dimension standard of the chosen gate valve match the pipeline to be installed.
2,Can be installed on horizontal or vertical pipelines.
3,The installation position should ensure convenience for use, maintenance, and replacement.
4,Bidirectional usage is allowed (pipeline fluid direction need not be considered during installation).
5,The valve should be stored in a dry indoor area before installation, with the valve disc in the open position.
6,The following preparations should be made before valve installation:
6.1 Carefully review usage conditions before installation to confirm compatibility with this valve’s performance specifications.
6.2 Clean the interior and sealing surfaces, with no allowed presence of dirt or debris.
6.3 Inspect the actuator to ensure reliable connection with the flange.
7,After valve installation, regular checks should be conducted, with the main inspection items as follows:
7.1 Check the sealing between the valve body and valve bonnet.
7.2 Check the sealing between the valve gland and the bonnet.
7.3 Check the sealing between the valve stem and the gland.
7.4 Check the sealing between the valve body and valve disc.
7.5 Check the flexibility of valve rotation.
7.6 After valve maintenance and assembly, there should be no sticking or jamming during rotation.
7.7 After valve maintenance and assembly, sealing and strength performance tests should be conducted as required.”
