The design and installation of the flow path failure caused by improper

Control valve flow path design or improper installation fault performance for the noise increases, the dirt easily accumulate inside the valve body, the control valve is closed lax leakage increases or stuck. Failure analysis as follows.
1 double seat valve leakage increases. Seat valve with integrated design, trim different coefficients of expansion caused by temperature changes, the leakage increases. Troubleshooting is the choice of the integrated seat valve, or choose a balanced sleeve valve function.pneumatic hand valve
2 three-way valves are used for mixing, due to the confluence of two streams at different temperatures cause leakage increases. Troubleshooting the confluence of the fluid into split control installation before the three-way valve in the heat exchanger fluid temperature, thus ensuring consistent o
3. Flow caused by improper noise increases. For example, open flow control valve for flow off occasions, resulting in a small flow of noise increases. The Troubleshooting method is to check the flow of re-install.
4 on the downstream shut-off valve and the bypass valve is not properly installed. Cause dirt, condensing or non-condensable gases can not be discharged. The Troubleshooting method is to drain valve installed at the lowest point of the control valve, vent valve installed on the highest point of the control valve.
Guide sleeve improper installation. Caused by misalignment of the Centre, the increased friction stem stuck. The Troubleshooting method is to re-install the guide sleeve.stainless steel pneumatic cylinders