Lhs941x, lhs942x, lt942x flow and pressure regulating valves, as one of the flow or pressure control elements, are commonly used in water conservancy, hydropower, thermal power and municipal water supply network systems; according to their installation and layout in the pipeline, they can be divided into medium-sized pipe type and end discharge type. When the pressure difference is high, in order to avoid the harmful noise and vibration generated in the process of energy dissipation in the valve or in the pipe, the......

Product overview

As one of the control elements of flow or pressure, the regulating and pressure regulating valve is commonly used in water conservancy, hydropower, thermal power and municipal water supply network systems; it can be divided into medium pipe type and end discharge type according to its installation and layout position in the pipeline. When the pressure difference is high, in order to avoid the harmful noise and vibration generated in the process of energy dissipation in the valve or in the pipe, the flow regulating valve should be arranged at the end of the pipeline so as to eliminate the energy outside the valve body; when the space at the end of the pipeline is sufficient, the valve with direct air discharge type can be used to eliminate the energy in the atmosphere; when the space at the end of the pipeline is limited, the valve can be used to eliminate the energy in the atmosphere, Submerged discharge valve should be used to eliminate energy in stilling basin.

Overview of pipe size

As shown in Figure 1, the medium-sized flow and pressure regulating valve is generally arranged in the middle section of raw water diversion pipeline, pump water delivery pipeline, water supply pipe network and other systems where pressure can be regulated and reduced to stabilize the pressure behind the valve and prevent the high-pressure operation of the back-end pipeline, i.e., pressure regulating valve (or pressure reducing valve); it can also be arranged in the valve chamber in front of the reservoir at the end of the pipeline to regulate the flow into the reservoir, i.e Flow regulating valve. Our pipe regulating and regulating valve has three types: medium fixed cone valve, multi hole sleeve valve and piston type control valve.

Applicable conditions

The valve is generally used in low pressure difference condition with cavitation index no less than 0.3 and pressure difference no more than 40m. The calculation method of cavitation index is shown in the calculation formula of cavitation index.
Production diameter: DN200 ～ dn3000
Pressure rating: pn6 / pni0 / PN16 / PN25
Outlet mode: conical diffusion with large opening

Parts and materials

Main parts and materials (Table 1)

Serial number	Part name	texture of material	Serial number	Part name	texture of material
One	Inlet pipe	structural steel	Six	cone	Ductile iron / steel
Two	valve body	Ductile iron / carbon steel	Seven	valve seat	Wear resistant stainless steel
Three	Sleeve gate	stainless steel	Eight	Outlet pipe	structural steel
Four	Valve shaft	stainless steel	Nine	Reducer	Rotork, UK
Five	Drive arm	Ductile iron / stainless steel	Ten	Electric actuator	Imported brands

Typical features

The sealing is reliable
The main seal is a metal to metal floating hard seal structure, which can be automatically adjusted and compensated to achieve the effect of zero leakage; at the same time, the valve seat is made of high-strength wear-resistant stainless steel, which is resistant to corrosion, erosion and wear.
Strong garbage resistance
The outlet of the valve is large annular opening with large flow channel, which has the best anti garbage ability. There is no need to set up a filter device in front of the valve.
It can be repaired and maintained online
The driving parts of the valve are all outside the sleeve gate, and there is an overhaul manhole on both sides of the valve body. The valve can be replaced online or garbage can be cleaned without disassembly.
Please refer to our technical center for details

　　Shangou Valve Co, Ltd. is a valve manufacturing enterprise located in Oubei, Wenzhou, Zhejiang Province. It is an enterprise integrating production and sales of high,medium and low pressure valves. The company has a registered capital of 80.8 million, producing and selling all kinds of valves. The quality is reliable and the variety iscomplete, so it is sold well all over the country, including gate valve series, stop valve series, check valve series, ball valve series, safety valve series, pressure reducingvalve series, buttrfly valve series, drain valve series, plug valve series, forged steel valve series, stainless steel valve series, power station valve series, breathing valveseries, Diaphragm valve series, hydraulic control valve series, solenoid valve series, needle valve series, regulating valve series, etc Nominal diameter: 6mm-2000mm (11 4"- 80"), nominal pressure. 0.1mpa 60mpa (150Ib- 3500lb), working temperature -196 °C - 300 °C. The main materials are: WCB cast steel. Wc6 chrome molybdenumsteel, wc9 chromium molybdenum vanadium steel, 304 stainless steel, 316 stainless steel, 316L stainless steel, 2025 high temperature stainless steel, etc. the productsare widely used in petroleum industry, printing and dyeing industry, steel industry, pharmaceutical industry, chemical industry, high-rise building industry, textile industry,paper industry and other fields. The company's main products are water conservancy control valve Series, automatic control instrument valve series, non-standardsewage treatment valve series, pipeline pressure valve series, products can be divided into American Standard, national standard, Japanese standard, German standardseries and S0 on