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Add: Room 1009 Building 666,Siming Zhong Road,Yin zhou district,Ningbo,Zhejiang China
P.C: 315100
Tel: +86-574-88189478  
  +86-574-28870228
E-mail:nord@cnool.net
E-mail:admin@nord-foundry.com

Welcome to Relief Valve
Nord Machinery Co.,LTD is a foundry specialized in manufacturing the main body components of various valves, including valve body castings and finish machining. We could make different valves according to drawings from customers. The weight controled is 0.2-2000kg.The material range includes Carbon Steel, Alloy Steel,Stainless Steel, Gray Iron, Ductile Iron,etc. We use the processes of lost wax casting(precision casting- investment casting) technics and lost foam casting techinics and quartz sand casting technics, Furan resin,phenolic resin technices to produce the Valves. br / nbsp /p p We warmly welcome your drawings for production any time! Hope to work with you based on mutural Benefit!
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Process Description
 Relief Valve 
 

 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℃.

 Relief Valve Technological Process


 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.
 Links:China Relief Valve manufacturer,China Relief Valve factory,China Relief Valve co.,ltd ,China Relief Valve Foundry,China Relief Valve company,China Relief Valve Supplier,China Relief Valve Inc,China Relief Valve Corporation,China Relief Valve Machining,China Relief Valve Casting,China Relief Valve manufacturer,China Relief Valve factory,China Relief Valve co.,ltd ,China Relief Valve Foundry,China Relief Valve Company,China Relief Valve Supplier,China Relief Valve Inc,China Relief Valve Corporation,China Relief Valve Machining,China Relief Valve Casting,China Relief Valve manufacturer,China Relief Valve factory,China Relief Valve co.,ltd ,China Relief Valve foundry,China Relief Valve company,China Relief Valve Supplier,China Relief Valve inc,China Relief Valve corporation,China Relief Valve Machining,China Relief Valve Casting.
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Trade Dept Add: Room 1008 Building 666,Siming Zhong Road,Yin zhou district,Ningbo 315100,China
Factory Add: Huanzhen Dong Road,Hengxi Town,Yinzhou district,Ningbo,Zhejiang,China
Tel:086-574-88189478  Fax:086-574-28870228; Email: admin@nord-foundy.com     nord@cnool.net

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