| Process Description |
| Relief Valve |
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Relief valves areautomatic valves used on system lines andequipment to prevent overpressurization. Mostrelief valves simply lift (open) at a preset pressureand reset (shut) when the pressure drops onlyslightly below the lifting pressure. Figure 9-24shows a relief valve of this type. System pressure simply acts under the valve disk at the inlet of thevalve. When system pressure exceeds the force ex-erted by the valve spring, the valve disk lifts offits seat, allowing some of the system fluid toescape through the valve outlet until system pressure is reduced to just below the relief setpoint of the valve. The spring then reseats thevalve. An operating lever is provided to allowmanual cycling of the relief valve or to gag it openfor certain tests. Virtually all relief valves areprovided with some type of device to allowmanual cycling. |
| Valves are widely used in the field of water treating equipments industry, chemical equipments industry, petrifaction industry, petroleum equipment industry, papermaking industry, mining equipment industry, electricity equipment industry, liquefied gas equipment industry, food equipment industry, pharmacy equipment industry, water supply and drainage system, mechanical equipment valve, electronic industry valve, civil construction valves, industry pipeline valves, GE parts, industry equipments, fire fighting system, filter equipments, environmental protection equipments. Besides these, they can also be used for nuclear power industry, thermal power equipments, building industry and the special industries. |
| Usually used material for valves: gray iron, ductile iron, WCB, LCC, carbon steel, casting steel, SS304, SS316, CF8, CF8M、CF3、CF3M, duplex stainless steel and special steel. Pressure grade: 0.6～32.0Mpa, inside nominal diameter: DN15～DN2000, applicable temperture:-150℃～+700℃. |
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Relief Valve Technological Process
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| We will produce valves according to the International Production Standard. All valves and it's components will be tested, including pressure testing, tightness testing and whole body debugging testing. All valves will have to pass the above testings before delivery. We warmly welcome customer representatives to come to inspect the valves any time! |
| Our company is export-oriented, and the Valves have already been sold to Australia, United States, Canada, UK, (Britain, England), Holland, France, Germany, Denmark, Sweden, Finland, Russia, Spain, Portugal. Italy, etc. |
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