Technical Articles
  • Valve Storage and Quality Assurance
    Posted: 10/28/2015 13:56:41  Hits: 469
    1. The storage site shall not be selected in the lower-lying areas. 2. The storage place should be well ventilated, dry and clean, don't store the valve in open space, and there should no corrosive materials. 3. The storage area should be easy to transport, and with lifting equipment. 4. The pac...
  • Selection Considerations of Oil and Gas Valves
    Posted: 10/10/2015 17:08:54  Hits: 484
    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 m...
  • Selection Criteria for Pressure Reducing Valve
    Posted: 09/17/2015 17:14:59  Hits: 982
    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...
  • Three Classifications of Control Valve
    Posted: 09/04/2015 17:54:44  Hits: 359
    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...
  • Connection & Installation Notes of Forged Steel Gate Valve
    Posted: 08/18/2015 16:44:21  Hits: 457
    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: ...
  • Selection of Safety Valves in Different Areas
    Posted: 08/11/2015 08:08:35  Hits: 351
    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 ...
  • Damage of the Abnormal Pressure Rise – Gate Valve
    Posted: 08/05/2015 14:18:35  Hits: 304
    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 protec...
  • Transport Issues of Pneumatic Butterfly Valves
    Posted: 07/27/2015 11:36:39  Hits: 288
    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. Be...
  • Characteristics of Gas Welded Ball Valves
    Posted: 07/20/2015 16:45:06  Hits: 306
    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 ...