gate is closed ( Ram) Along the pathway of the center line of the vertical direction of the Industrial Valves. Gate valve in the pipeline can only be fully open and close to cut off the use, not for adjusting and throttling. Gate valve is a valve, use a wide range of general caliber DN≥ 50 mm to cut off the device to choose it, sometimes at the caliber of small cutting device also chooses gate valves.

sealing face has two gate, two of the most commonly used mode gate valve sealing surface form a wedge, the wedge Angle vary with the valve parameters, usually in the form of 50, when the medium temperature is not high for 2 & deg; 52 '. Wedge gate valve of the damper can be made into a whole, is called a rigid disc; Can also make it generates trace of deformation of ram, in order to improve the manufacturability, make up for the sealing surface Angle in the process of our processing deviation, this damper is called elastic disc.

gate valve is closed, sealing surface can only rely on medium pressure to seal, that depend on medium pressure, the disc will be to the other side of the valve seat sealing surface pressure to ensure that the seal face seal, this is the seal. Most is adopt compulsory seal gate valve, the valve is closed, to rely on outside force forced the ram pressure to the seat, to ensure the sealing surface sealing.

the gate valve, the gate, as with the stem straight line called lifting lever gate ( Also called rising stem gate valves) 。 Usually in lifting lever on the trapezoidal thread, through the valve at the top of the nut and guide groove on the valve body, the rotation movement into linear motion, which is the operating torque thrust into operation.

open Industrial Valves, when the gate hoisting height is equal to valve size 1:1 times, fluid channels open completely, but at runtime, the position cannot be monitored. Actual use, is the stem apex as a sign, that is fixed position, as its full open position. To consider locking phenomenon in a temperature change, usually in the open to the vertex positions, pour 1/2-1 ring back, as the full open position of the valve. The Industrial Valves fully open position, therefore, according to the location of the damper ( > the trip.

1。 Gate valves are normally used in open - Close the occasion, cannot be used for throttling service.

2。 Gate valves are normally installed in horizontal pipe runs with the stem vertical. Can also be installed in vertical pipeline or of horizontal pipe runs with the stem other than vertical, but according to valve size, application environment and the material details, may require special structure. If the purchase of valves for special installations, when ordering, valve orientation should be noted.

3。 For the application of temperature over 260 ℃ environment, it is suggested that using the flexible or split wedge, avoid wedge stuck due to thermal expansion. This kind of situation in the condition of the valve is closed when cold, and then heated to happen.

4。 When used in high velocity ( Turbulence) Or thermal cycling applications, in order to avoid loosening, threaded seat rings should be lock welded to the body. When ordering, please specify.

5。 After shutoff gate valves, valve stem should be slightly back ( 1/8 to 1/4 turn) In order to release the stem load. This makes the stem to expand slightly, not stuck or damaging the valve and will not affect shutoff.

6。 If the seat ring installation lugs are removed, high integrity shutoff gate valves can be used in the hot water outlet or the use of soft iron pipe system. When ordering, please specify.

7。 Pumping station without being limited by the space to use, the water sundry more easily blocked in the important position of the valve, can use flashlight dual-use gate valve; Conversely butterfly valve can be used, especially with the butterfly valve can be used in the pump room renovation project, in order to effectively use the original pump room space, to improve on the premise of the original pump room area is the same for ( Row) The purpose of the water.

resilient gate valve wedge valve processes have been widely used to produce resilient seal gate valve such as os&y valve, os gate valve, and os & y valve fire protection etc.
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