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.
Key words:
Classification:
Ductile iron valve series
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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