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Comparison of bellows globe valve and ordinary globe valve
Comparison of bellows globe valve and ordinary globe valve: 1. Double sealing design (bellows + packing) If the bellows fails, the stem packing will also avoid leakage and meet international sealing standards. 2. There is no fluid loss, reducing energy loss and improving plant equipment safety. 3. Long service life, reduce maintenance times and lower […]
Classification of the globe valves-(2)
According to the classification of purposes, the globe valve can be divided into the following types: The fluorine-lined stop valve: it is suitable for various concentrations of aqua regia, sulfuric acid, hydrochloric acid, hydrofluoric acid and various organic acids, strong acids, strong oxidants, and various concentrations of strong alkali organic solvents and other Use on […]
Classification of the globe valves-(1)
According to the channel direction, the globe valve is devided into 4 types: 1) Straight-through globe valve. 2) Direct flow stop valve: In direct flow or Y-shaped stop valve, the flow passage of the valve body is in a diagonal line with the main flow passage, so that the damage degree of the flow state […]
The working principle and characteristics of the globe valve
The globe valve is a tool that relies on the pressure of the valve stem to make the sealing surface of the disc and the sealing surface of the valve seat tightly fit to prevent the flow of the medium. It is a forced sealing valve and is one of the most widely used valves. […]
Features and working principle of silent check valve
Silent check valve refers to a valve that automatically opens and closes the disc depending on the flow of the medium itself to prevent the medium from flowing back. It is also called check valve, one-way valve, silence check valve, reverse flow valve, and back pressure valve. Check valve is a kind of automatic valve, […]
Y type ball check valves’ work theory, construction feature, advantage
1. Overview of ball check valve: Ball type check valve is widely used in petroleum, chemical and electric heating boilers and other devices. It is mainly used to prevent the reverse flow of the medium in the pipeline and protect the safe operation of the equipment. It is an ideal non-return device for pipelines. However, […]
Ball check valve introduction
Check valves are also known as counterflow valves, check valves, back pressure valves, and one-way valves. This kind of valve is automatically opened and closed by the force generated by the flow of the medium itself in the pipeline, and belongs to an automatic valve. Uses and characteristics of ball check valve: HQ44X single-ball micro-resistance […]
Introduction of Carbon steel lift check valve H41H-16C
H41H-16C carbon steel lift check valve (check valve) is also known as one-way valve or check valve. Its opening and closing parts are opened or closed by the flow and force of the medium, and its function is to prevent the medium in the pipeline from flowing back . check valve can be divided into […]
Introduction of cast steel lift swing check valve
1. Overview of Cast steel lift check valve: The lift check valve is selected for the pipelines of various working conditions such as petroleum, chemical industry and thermal power plants with a nominal pressure of PN1.6～6.4MPa and a working temperature of -29～550℃. Applicable media are: water, oil, steam, etc. 2. Structural features of Cast steel […]
Swash plate type non-impact check valve
“Swash plate check valve” generally refers to tilting disc swing check valve. Chinese name: PXH44H-150LB swash plate type non-impact check valve Structure length: ASME B16.10 Product design press: ASME B16.34 Inspection and testing: API 598 PXH44H-150LB swash plate type non-impact check valve details: 1. Product overview: It is a new type of check valve developed […]