Page 4 of Technical Articles

In order to achieve the oil and gas flow control, oil and gas valves should have these following basic properties: sealing, compressive strength, safety, adjustability, flow-through of fluid and switching flexibility. For the gas media with high pressure, flammability and explosive performance, we must...

Selection Criteria for Pressure Reducing Valve: 1. For soft sealed pressure reducing valve, it is not allowed to have leakage problems within the specified time, while for metal sealed pressure reducing valve, its leakage should be less than 0.5% of maximum flow; 2. When the export flow changes, the...

Control valve is used to regulate the flow, pressure and liquid level of media. According to the regulating signals, it can automatically control the opening degree so as to achieve the regulation of flow, pressure and liquid level. There are three classifications of control valves: electric control...

Forged steel gate valve is used to cut off or connect the media. Valves with different materials can be separately applied to different media, such as water, steam, oil, nitric acid, acetic acid, oxidizing media, urea and so on. Forged steel gate valve has these following three connections: First: welded...

In the heating system, there is a large demand for safety valves for which they provide a lot of security for the entire system. Therefore, it is necessary to maintain them in daily life. When the pressure value exceeds the specified parameters, the valve will open automatically in the water supply...

Abnormal pressure rise of gate valves may happen in many applications and the reason can be classified into this two aspects: the system media changed from cold into hot after the boot; the gate is off in the cold state and on in hot state. Therefore, if there is no action to be taken to protect...

Installation steps for the gaskets of pneumatic butterfly valves: 1. Before mounting pads, you should inspect the nuts and bolts, as well as the threaded or flanged connections. The type, size and material of bolts and nuts should be consistent with the relevant provisions of national standards. Before...

Because of the particularity of its medium, a few abnormalities of gas welded ball valves are likely to cause leakage problem. Needless to say, the consequence for the gas leak is really severe. So when buying gas welded ball valves, you’d better learn some knowledge about its characteristics...

Safety valves play a security role in the system. When the system pressure exceeds the predetermined value, safety valves could open automatically and discharge the gas into the atmosphere so that the pressure will not exceed the allowable value, avoiding the accidents. Therefore, safety valves are...