instrument valve

Overview and Application

instrument valveIt is a type of pipeline accessory. It is a device used to change the cross-section of the pathway and the direction of medium flow, and to control the flow of the conveyed medium.

instrument valveThe sealing performance refers toinstrument valveThe ability of each sealing part to prevent medium leakage isinstrument valveThe most important technical performance indicator.

instrument valveThere are three sealing parts: the contact between the opening and closing parts and the sealing surface of the valve seat; The matching of packing with valve stem and packing box; The connection between the valve body and the valve cover.

The first leak is called an internal leak, which is commonly referred to as a loose seal, and it will have an impactinstrument valveThe ability to cut off media. For block valves, internal leakage is not allowed.

The leakage in the last two places is called external leakage, which means that the medium leaks from inside the valve to outside. External leakage can cause material loss, environmental pollution, and in severe cases, accidents.

For flammable, explosive, toxic, or radioactive media, leakage is not allowedinstrument valveMust have reliable sealing performance.

purpose

instrument valveThere are several uses:

(1) Connect or disconnect the medium in the pipeline.

(2) Adjust and control the flow rate and pressure of the medium in the pipeline..

(3) Indicate and adjust the liquid level height. Such as liquid level indicators, liquid level regulators, etc.

(4) Other special purposes. Such as temperature regulating valves, overcurrent protection emergency shut-off valves, etc.