1, the selection of common sense temperature control valve 2, should be based on the type of medium (steam / hot water), temperature, pressure parameters and the use of conditions (heat exchanger type, open / Circulation capacity and actuator shut-off force. 3, for steam flow control, generally refers to the saturated steam of 98% dryness. In the case of superheated steam, due to the change of the steam adiabatic index k and the fluid viscosity coefficient, the corresponding change of the flow rate is generally required to be recalculated. 4, the media flow and the pressure before and after the valve into a square root relationship. Excessive pressure difference not only produces noise, but also produces cavitation on the valve body, affecting the service life, the light of the lax sealed, severe cases may explode, resulting in casualties and other major accidents. 5, excellent temperature regulation curve is to achieve the effect of temperature control. In addition to the special requirements of fast heat system, should try to ensure that the valve is equal percentage or parabolic characteristics. Equal percentage: Q / Qmax = R (L / Lmax-1) Parabola: Q / Qmax = 1 / [1+ (R - 1) L / L max] Shutdown, please close the manual valve before and after. Installation, the temperature control valve must be installed before the high mesh filter. 7, two-way valve must not be removed by removing the blind valve base for three-way valve. 8, the use of third-party production equipment and supporting Siemens products, should pay attention to meet the safety requirements. 9, the temperature control valve can not be used for direct water supply system, to be added to the cycle, if the heat exchanger is also required to add heat storage tank. 10, hot water conditions, please distinguish between hot water 24 hours and regular hot water supply conditions. This keyword search: Jiuding Automatic Control Equipment Co., Ltd. more valve technical articles
The wafer Check Valve with double discs is light with a small body, but a kind of check valve that quickly develops, which functions to preventing media in pipes from back flowing. Check valve belongs to the category of automatic valves, mainly used on those pipes in which media flow unidirectional and to control the media to flow only one-way so as to prevent accident.
Dual Plate Check Valve,Wafer Check Valve,Double Disc Check Valve,Full Lining Check Valve
SUZHOU YUEDA VALVE CO., LTD. , https://www.szyuedavalve.com