Recently, a chemical plant of the user phone call asking, conditioning system in their plant equipment using the original valve seat, no 3.8MPa steam, adjust the system is stable; increase 3.8MPa steam, the steam turbine coupled with the opening stop, original valve cannot meet the requirements, in particular in:
1) V-type ball valve leakage volume, closed lax, resulting in valve in a small opening, poor regulation characteristics.
2) V-type ball valve body vibration, noise is high.
3) V-ball valve fluid flow rate is high, the long-term erosion of the V-type ball valve stem up and down vibration severe, resulting in the stem and the valve plug Disconnect, a direct result of the steam cannot pass valve.
2) V-type ball valve body vibration, noise is high.
3) V-ball valve fluid flow rate is high, the long-term erosion of the V-type ball valve stem up and down vibration severe, resulting in the stem and the valve plug Disconnect, a direct result of the steam cannot pass valve.
In order to solve the above problems, a technician to the site to view and analyze the process conditions and the characteristics of various types of V-type ball valve, and finally decided to replace the original V-type ball valve seat, valve seat suited to use in the above case because the channel complex, large flow resistance, a small adjustable range; stem up and down movement of the spool poor stability, vibration. V-type ball valve stroke than a straight valve has great advantages which is composed of V-type ball valve structure decisions, V-type ball valve spool eccentric structure in the structure, in addition to the closed position, the core seat does not touch the remaining positions, reducing the wear and tear, the valve once opened to disengage the seat, reducing the operating torque, while the spool exclusive V-shaped opening may well ensure that the valve regulating performance in a small opening to solve the linear actuator valve in a small opening operating characteristics of a bad problem, V-type ball valve flow path is simple, straight-through single, small flow resistance, large tuning range, flow-open valve pressure recovery coefficient is higher than the valve seat is more applicable to the case of the occurrence of cavitation , V-type spool valve stem movement of rotation and linear movement of the valve compared to overcome the large pressure difference, which is 2.5 to 10 times straight trip valve in solving high temperature problems, V-type ball valve just hard soft elastic sealing solutions combine core seat due to hold at high temperature expansion card problem, while using high temperature resistant filler stem to ensure the reliability of sealing at high temperatures.
After a period of proof, V-type ball valve regulating fast response, wide flow range control, basically no vibration, noise is significantly reduced, eliminating the hazards present in the system.
Should you want to know more about ball valve, such as trunnion ball valve from China valve manufacturer, please visit www.reliavalve.com or send email to sales@reliavalve.com.
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