Design and principle of operationThe Type 2398 Excess Pressure Valve consistsOf a closing valve and an attached di-aphragm actuator. The excess pressure valveIs typically used to control inert gases and toConstantly maintain the upstream pressure ATA set point value within the range of 5 to 50Mbar. When the upstream pressure increases theValve opens, whereas a decreasing upstreamPressure causes the valve to close. The process medium flows through the valveBetween the seat (2) and plug (3) in the di-rection indicated by the arrow. The position of the valve plug determines theFlow, and hence the pressure ratio at the val-ve. The balancing bellows (5) is used to COM-pensate the forces resulting from the changesIn differential pressure, so that they do notHave any influence on the valve position. The upstream pressure to be controlled isTransmitted to the operating diaphragmVia the control line (10) and converted intoA positioning force. This positioning forceIs used to move the plug stem, dependingOn the force of the adjustment springs (7). The set point can be adjusted at the setPoint adjuster (8) by changing the load of The springs
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.
