Low Pressure Throttling Screw End Gate Valve

Media: Water, Oil, Gas, etc
Type: Straight-through
Material: Stainless Steel
Connection Form: Thread
Pressure: Low Pressure
Actuator: Manual
FEATURES:
1/4"~4" (DN8~DN100)
W. P.: 200WOG,200PSI
W. T.:-20oC ~200oC (-4oF~392oF)
Investment casting
Non-rising stem
Thread type: ASME B1.20.1 (NPT), DIN 2999 & BS21, ISO7/1 & EN10226

Gate valve: The opening and closing part of the gate valve is the gate, and the movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted.

throttling and throttling. The gate has two sealing surfaces. The two sealing surfaces of the most commonly used mode gate valve form a wedge shape. The wedge angle varies with the valve parameters, usually 5°, and 2°52' when the medium temperature is not high. The gate of the wedge gate valve can be made into a whole, called a rigid gate; it can also be made into a gate that can produce a small amount of deformation to improve its craftsmanship and make up for the deviation of the sealing surface angle during processing. The plate is called an elastic gate.

When the gate valve is closed, the sealing surface can be sealed only by the medium pressure, that is, relying on the medium pressure to press the sealing surface of the gate to the valve seat on the other side to ensure the sealing of the sealing surface, which is self-sealing. Most gate valves are forced to seal, that is, when the valve is closed, the gate must be forced against the valve seat by external force to ensure the tightness of the sealing surface.

The gate of the gate valve moves in a straight line with the valve stem, which is called a lift-rod gate valve, also known as a rising-rod gate valve. Usually, there are trapezoidal threads on the lift rod. Through the nut at the top of the valve and the guide groove on the valve body, the rotary motion is changed into a linear motion, that is, the operating torque is changed into an operating thrust.