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Spring piston type pressure reducing valve

A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category.

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Classification:

Ductile iron valve series

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Description


A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category. The valve may be operated manually or with a hand wheel, handle or pedal, and may also be controlled to vary the pressure, temperature and flow rate of the fluid medium. The valve can perform continuous or repeated operations on these changes, such as safety valves installed in hot water systems or steam boilers. In more complex control systems, automatic control valves are used as required by external inputs (I. e., to adjust the changing set point of the flow through the pipeline). The automatic control valve does not need to be manually operated according to its input and setting, so that the valve can accurately control the various requirements of the fluid medium. Valves can also be divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum steel valves, chromium molybdenum vanadium steel valves, dual phase steel valves, plastic valves, non-standard customized valve materials, etc.

◆ Product overview

Y42X type spring piston type pressure reducing valve is suitable for water, air and non corrosive liquid medium pipeline. In the hot and cold water supply and fire water supply system of high-rise buildings, it can replace the conventional partition water pipe, simplify and save the equipment of the system, and also play the role of pressure reduction and pressure stabilization in the usual hot and cold water pipe network.

◆Technical parameters

Nominal pressure: 1.6 ~ 2.5MPa
Nominal diameter: 20~400mm
Applicable medium: water, air or corrosive liquid
Applicable temperature: 0~90 ℃
Flange standard: GB/T 17241.6
Test standard: GB/T 13927
 





◆ Typical installation diagram

 ◆ Material of main parts

Part Name Valve body, upper bonnet, lower bonnet Adjusting spring Piston Cylinder liner
Materials Cast iron, ductile iron silicon manganese steel Stainless Steel Stainless Steel

 

◆ Main outline connection dimension

DN L H₁ H₂
PN16、25 PN16 PN25 PN16 PN25
20 160 90 90 220 220
25 180 95 95 255 255
32 200 100 100 255 255
40 220 115 115 325 325
50 250 120 120 325 325
65 260 125 125 330 330
80 310 135 135 340 340
100 350 108 108 317 317
125 400 190 200 560 560
150 450 205 210 580 580
200 500 220 245 630 630

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