Design and principle ofOperationThe excess pressure valve consists of aSpring-loaded globe valve with a balancedPlug and an actuator with an operating dia-phragm and a safety diaphragm. The excess pressure valve is used to maintainThe pressure upstream of the valve to an ad -justed set point value. The valve opens whenThe upstream pressure rises. The process medium flows through the valveBetween the seat (2) and the plug (3) in the di-rection indicated by the arrow. The positionOf the valve plug determines the flow rate. TheUpstream pressure p 1 is transmitted via theControl line (12) to the operating diaphragm(11.1) and is converted into a positioningForce which is used to move the valve plug, Opposing the force of the positioning springs(7). The spring force is adjustable at the setPoint adjuster (6). The regulator has two diaphragms (11.1) op-erating independently from one another. Continued operation is possible even shouldOne diaphragm fail. To recognize a rupturedDiaphragm, a diaphragm rupture indicatorOr optionally a pressure switch to signalize aRupture is installed in the intermediate ring(11.3 ). Typetestng: The regulator has been typetested as a safetyExcess pressure valve (SEV) by the GermanTechnical Inspectorate (TÜ V) according toAGFW specifications. The test mark is available on request. 2 EB 2546-2 ENDesign and principle of operation
Shanghai ThinkTank Process Management Co., Ltd. is the sole production and R&D institute of Taiwan STONE Company in Mainland China. ThinkTank entered Chinese market in 2002 and moved from Hangzhou to Shanghai headquarter in 2012. Based on over 30 years experience in researching and manufacturing automatic instruments, brining in overseas advanced technology and combining domestic users real working situation, ThinkTank is specialized in producing new typed self-regulating valves, control valves and various kinds of automatic instruments. ThinkTank's business includes engineering projects such as electricity, metallurgy, petrochemical processing, light industry and building materials, municipal water service and natural gas.
Enterprise history
1985.08 Taiwan STONE company was established in Taipei city.
1990.02 Sales network covered Southeast Asia.
2002.06 Branch office was fund in Hangzhou, Zhejiang, handling all business in China
2012.10 Mainland head office was moved to Pudong, Shanghai
Shanghai ThinkTank Process Management Co., Ltd. Has a professional team works for control valves design and engineering application. ThinkTank develops a series of hi-tech products after absorbing overseas advanced technology and innovating.
*New self-regulating, micro pressure, differential pressure, flow, temperature control valve
*New pneumatic (electric) linear actuator (low dB, high pressure) control valve
*Pneumatic (electric) rotary actuator (O/V ball, butterfly) control valve
*Pneumatic (electric) special corrosion resisting control valve
Shanghai ThinkTank Process Management Co., Ltd sticks to the policy of "client oriented, quality comes first, and faith is root". Depending on many years experience on engineering application in various industries, ThinkTank provide clients with good, reliable full service, focusing on maximizing the rate of return on investment for clients.
