Knowledge of the pressure reducing Industrial Valves are

a, principle and construction type of the pressure reducing valve

pressure reducing valve is a kind of special device, reduce the working pressure pipeline automatically, it can be by high water pressure reducing valve before pipe to the valve pipe after the required level. Pressure reducing valve is widely used in high-rise buildings, the area of urban water supply pipe network pressure is too high, mines and other occasions, to ensure that each water point in water supply system water pressure and flow to have the appropriate services. In view of water leak rate and degree of waste almost as the water pressure is directly proportional to the size of feed water system, thus reducing valve have improve system operation condition and potential water-saving effect, according to statistics, the water-saving effect is about 30%.

a lot of structure type pressure reducing valve, common in the past have a spring in the diaphragm, piston, etc. Within the basic principle of the pressure reducing valve by valve port on the local resistance to reduce the water pressure, water pressure drop by connecting disc film or the scope of import and export pressure difference on both sides of the piston automatic adjustment. In recent years appeared some new type pressure reducing valve, such as constant ratio type pressure reducing valve. Constant ratio reduced pressure principle is to use the body of the floating piston hydraulic pressure ratio control, import and export side pressure ratio is inversely proportional to the import and export side piston area ratio. The pressure reducing Industrial Valves work smoothly without vibration; The body without the spring, so no spring rust, metal fatigue failure were evident; Good sealing performance, leakage and dynamic pressure reduction (both The water flow) And static pressure reduction ( When traffic is 0) ; Especially in relief at the same time does not affect the water flow. 5 mpa, regulating range error is & plusmn; 5% ~ 10%.

it should be noted that the head loss of water flow through the valve is very big, but due to reduced water waste and make the system layout and reasonable flow rate distribution and improve the system operating mode, so the overall is still the energy saving.

2, the basic properties of the pressure reducing valve

( 1) Regulating range: it refers to the pressure reducing valve output pressure P2 adjustable range, meet the precision within the scope of this requirement. Regulating scope mainly related to pressure regulating spring stiffness.

( 2) Pressure feature: it refers to the flow fixed value for g, caused by the input pressure fluctuation characteristics of the output pressure fluctuations. The smaller the output pressure fluctuation, the characteristics of the pressure reducing valve, the better. The output pressure must be less than the input pressure & ndash; Constant value was basically not changes over the input pressure.

( 3) Flow feature: it refers to the input pressure & ndash; Timing, the output pressure changes along with the change of output flow g resistance. G when the flow changes, the output pressure changes as small as possible. Generally the lower the output pressure, which fluctuates according to the change of output flow.

3, the selection of pressure reducing valve

according to the requirement of using the selected type and voltage regulation accuracy of the pressure reducing valve, then choose the size according to the maximum output flow required. 1 mpa. After general installed in the water pressure reducing valve air filter, oil mist device or setter, and pay attention to answer against its import and export; should relax the knob when not in use, in order to avoid diaphragm often compression deformation and affect its performance.

If you have a need for y gate valve wedge gate valve, like , and , you need to be able to find a dependable provider who you can trust when necessary.
Shenzhen Mech Valve Trading Co., Ltd. trusts our colleagues as valuable members of our resilient seated gate valve and pledge to treat one another with loyalty, respect and dignity.
rising stem gate valve has obtained many affirmation in the market. Undoubtedlly, our customers are totally satisfied with our products.