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Y43H Pilot-Operated Steam Pressure Reducing Valve

Y43H Pilot-Operated Steam Pressure Reducing Valve

  • Model:Y43H-16P/Y43H-25P/Y43H-40P/Y43H-64P/Y43H-10P/Y43H-16C/Y43H-25C/Y43H-40C/Y43H-64C/Y43H-10C
  • Specification:DN15-500
  • Temperature:≤550 ℃
  • Medium:Water, steam, oil and similar liquids
  • Pressure:PN16,PN25,PN40,PN64,PN10
  • Connection method:Flange
  • Driving method:Automated
  • Material:Cast Steel、Stainless Steel
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Y43H Pilot-Operated Steam Pressure Reducing ValveOverview

Y43H Pilot-Operated Steam Pressure Reducing Valve Overview

The Y43H pilot-operated steam pressure reducing valve assembly is a specialized pressure regulating unit designed for steam systems, comprising a pilot-operated pressure reducing valve, upstream and downstream isolation valves, a filter, pressure gauges, and associated piping accessories. This valve assembly utilizes a pilot-piston or pilot-diaphragm structure, where changes in downstream pressure are sensed by the pilot valve to drive the main valve for precise adjustment, achieving stable reduction of inlet steam pressure. The valve body is constructed from high-temperature-resistant cast steel or stainless steel, specifically designed for saturated and superheated steam conditions. This integrated valve assembly features high regulation accuracy and excellent stability, making it widely applicable in industrial steam systems such as power plants, petrochemicals, textiles, and food processing, providing reliable pressure control and system protection for steam-consuming equipment.

Y43H Pilot-Operated Steam Pressure Reducing Valve Product Image

Y43H Pilot-Operated Steam Pressure Reducing ValveCharacteristic

Y43H Pilot-Operated Steam Pressure Reducing Valve Features

1. High-precision pilot-operated regulation: Utilizes a pilot control principle that responds sensitively to downstream pressure changes, offering high adjustment accuracy and superior pressure stabilization compared to direct-acting pressure reducing valves.

2. Specialized design for steam conditions: The valve assembly structure and materials are optimized for high-temperature steam, providing resistance to erosion and thermal deformation, suitable for saturated steam and systems with a certain degree of superheat.

3. Integrated safety configuration: Standard equipment includes an inlet filter, upstream and downstream isolation valves, dual pressure gauges, and a safety valve interface, offering comprehensive pressure monitoring, impurity filtration, and system protection.

4. Easy maintenance and stable operation: The pilot valve and main valve can be inspected and repaired separately. The filter screen can be easily cleaned and seals conveniently replaced. The valve assembly operates smoothly with strong anti-interference capability.

5. Wide range of applications: Can be adapted to steam pipelines with different pressure ratings. By replacing the pilot valve spring or adjusting the pilot valve setting, various pressure reduction ratios and flow requirements can be met.

Y43H Pilot-Operated Steam Pressure Reducing Valvestructure principle

Y43H Pilot-Operated Steam Pressure Reducing Valve Structure Diagram

Parts Name Material List

NO.NameMaterial
1bodyCarbon Steel
2discStainless Steel
3seatStainless Steel
4pistonStainless Steel
5Main and Auxiliary SpringsChromium Vanadium Steel
6DiaphragmStainless Steel Strip
7Piston RingAlloy Wear-Resistant Cast Iron


Y43H Pilot-Operated Steam Pressure Reducing Valvetechnology parameter
性能规范表Performance Specification
公称压力Nominal Pressure1.0-6.4Mpa
强度试验压力Shell Test1.5-9.6
密封试验压力Seal Test1.1-7.04
适用温度Suitable Temp.≤550


Y43H Pilot-Operated Steam Pressure Reducing Valvestandard size

Dimensions Standard Requirements

1. The structural length of the valve shall conform to the standard GB/T12221.

2. The connecting flange shall conform to the standard GB/T 17241.6

Y43H Pilot-Operated Steam Pressure Reducing Valve View Drawing

Y43H Pilot-Operated Steam Pressure Reducing Valve Dimensions Table

外形尺寸(PN64):
公称通径 DNY43H/Y型减压阀外形尺寸
LHHl
PN64PN100
15180180305105
20180200340105
25200220340120
32220230340120
40240240355135
50270300355135
65300340360140
8033036039517
100380400185
125450415215
150500430225
200550495260
250650545310
300800600355
350850640395
400900690435
500950780495

外形尺寸(PN16-40) :
公称通径 DNY43H/Y型先导式减压阀外形尺寸
LHHl
PN16/PN25PN40
1516018029590
2016018033098
25180200330110
32200220330110
40220240345125
50250270345125
65280300350130
80310330385160
100350380385170
125400450400200
150450500415210
200500550475240
250650525290
300800580335
350850620375
400900660405
450900730455
500950750465