lhs941x flow and pressure regulating valve with anti-fouling shutoff valve, multi-function hydraulic control valve, automatic flow control valve, multi-function water pump control valve, mud valve, pressure reducing valve, proportional pressure reducing valve, pressure regulating valve, Filter piston type control valve, filter piston type adjustable pressure reducing flow control valve, filter piston type water-hammer prevention relief valve, gate valve, balance valve, exhaust valve, water supply and drainage, heating, heating, fire control and other control valves.
The nominal diameter of the pressure relief valve should be 150mm. The nominal diameter of the pressure holding valve should be the same as the nominal diameter of the pipeline to be protected. (16) Pressure relief involves hard work, and the pressure level of the pressure holding valve should be determined according to the working pressure of the water supply (including fire fighting) system. Generally, it should be consistent with the pressure level of the valve on the outlet pipe of the water supply (including fire protection) pump. (17) If the discharge port of the pressure relief valve is far away and the discharge pipe is too long (20m), the diameter of the discharge pipe should be more stable than the pressure of the pipe network before the pressure relief valve. (18) During the pressure test of the fire water supply system, if the test pressure of the system is higher than the nominal pressure of the selected pressure relief valve, the shut-off valve in front of the pressure relief valve should be closed to avoid damage or failure of the pressure relief valve. (19) During the pressure test of the system, the pressure relief valve should be closed. (20) The pressure relief contains hard work, and the pressure holding valve is high and the setting opening pressure Ps is shown in the following table. (MPa) Item pressure level 1.01.62. High pressure before valve 1.01.62. High setting opening pressure Psmax 0.91.42.0 Note: PS value should not be set too low.
lhs941x flow regulator performance: 1. Good linearity: due to the special structural design inside the valve body, it has good linearity for the flow control characteristics of the fluid, even in the first 10% stroke, it still has good flow control effect.
2. Anti-cavitation and anti-vibration: make full use of the principle of fluid dynamics to design the flow channel, eliminate the damage of cavitation and vibration to the pipe network, and greatly improve the service life of valves and pipelines.
3. Reliable work: Reasonably designed flow channel and sealing type make the valve suitable for fluids containing small particles such as mud and sand, and will not cause leakage or control failure due to loose closing caused by debris.
4. High-pressure energy dissipation: Even in the case of high-pressure difference, the valve can effectively eliminate high-pressure energy and reduce high-pressure to low-pressure without vibration and cavitation, effectively ensuring the service life of the valve.
5. Excellent material selection: The key parts of the valve such as valve seat, stopper, guide rail and other parts are made of special non-reinforced materials. This material is wear-resistant and cavitation resistant, and its hardness is three times that of ordinary non-reinforced steel.
6. Floating valve seat: The connection between the valve seat and the cone is made of special silicone adhesive, which has high viscosity and resistance to shearing. The floating valve seat produces a self-centering effect when sealing, which makes the sealing more reliable.
7. Small fluid resistance: The valve's advanced structural design and reasonable flow channel distribution reduce the pressure loss of the entire valve to a shadow, which is beneficial to save the power consumption of the entire pipeline network.
8. Long service life: The main seal in the valve is metal counterpart, the seal is reliable, the fluid erosion resistance is strong, and it is not easy to be damaged by the inclusion of garbage. In addition, most of the parts are made of stainless steel, and the service life of the valve is greatly improved.
9. Small operating torque: The opening and closing part of the valve is a sleeve gate, and its movement direction is consistent with the flow direction of the main fluid, and the effective force area is small, so the operating torque required to open and close the valve is also small, and the cost of the drive device can be reduced. significantly reduce.
lhs941x flow regulating valve is widely used in water distribution pipeline systems such as water plants, power plants, large buildings, metallurgy, petrochemicals, energy, medicine, etc.