Description
Buy Pilot Operated Pressure Reducing Valve YD43H/DP17/DP143 PN1.0/1.6/2.5 WCB Flanged Type
The VALVEHU YD43H/DP17/DP143 Pilot Operated Pressure Reducing Valve is a high-performance control valve designed for precise pressure regulation in pipelines transporting steam, gas, or air. Developed with international reference standards, this advanced pilot-type valve is engineered for high sensitivity and accurate downstream pressure control.
Manufactured with a durable WCB cast steel body, and internal components such as stainless steel trim (2Cr13) and diaphragm plates made from 1Cr18Ni9Ti, the valve ensures long service life, corrosion resistance, and superior sealing performance. This valve operates based on a pilot-sensing mechanism that maintains outlet pressure stability regardless of fluctuating inlet pressure or flow. It is widely applied in industries requiring reliable pressure control such as petrochemical, thermal power, textile, and general process piping.
The valve series supports multiple pressure ratings including 1.0, 1.6, and 2.5 MPa, and is available in sizes from DN15 to DN150. Flow coefficient (Cv) ranges from 2.9 to 29.1 based on diameter, ensuring optimized flow capacity.
As part of VALVEHU’s industrial valve portfolio, this model is ideal for energy-efficient systems that demand accuracy and rapid response. Its modular structure and pilot configuration provide both stability and sensitivity, with minimal maintenance requirements.
For engineers and buyers seeking dependable and precise pressure regulation, this valve delivers long-term value. To find the right model or consult for technical fit, contact the experts at VALVEHU in China. Our team is ready to support your industrial valve selection and application needs.
Technical Specifications
- Valve Type Pilot Operated Pressure Reducing Valve
- Body Material WCB (Cast Carbon Steel)
- Internal Trim Stainless Steel 2Cr13
- Diaphragm Plate 1Cr18Ni9Ti Stainless Steel
- Pressure Ratings 1.0 MPa, 1.6 MPa, 2.5 MPa
- Size Range DN15 to DN150
- Cv Values From 2.9 to 29.1
- Connection Type Flanged Ends
- Flow Media Steam, air, and industrial gases
- Operation Self-actuating via pilot control system
Main Component Materials
| Component Name | Material Specification |
|---|---|
| Valve Body, Bonnet | WCB |
| Seat | 2Cr13 |
| Disc | 2Cr13 |
| Stem | 2Cr13 |
| Diaphragm Plate | 1Cr18Ni9Ti |
| Regulating Spring | 60Si2Mn |
Flow Coefficient (Cv) Values
| DN (mm) | 15 | 20 | 25 | 32 | 40 | 50 |
|---|---|---|---|---|---|---|
| Cv | 2.9 | 5.3 | 8.6 | 11.6 | 16.5 | 29.1 |
Main Connection Dimensions for 1.0/1.6/2.5 MPa Pressure Classes
| DN (mm) | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L | 147 | 154 | 180 | 200 | 220 | 250 | 280 | 310 | 350 | 400 | 450 | 200 |
| H1 | 265 | 265 | 265 | 265 | 320 | 320 | 325 | 385 | 385 | 430 | 430 | 560 |
| H | 110 | 110 | 110 | 110 | 125 | 125 | 130 | 170 | 170 | 200 | 210 | 240 |
| D | 200 | 200 | 200 | 220 | 220 | 220 | 280 | 280 | 330 | 330 | 400 | 450 |
FAQ
What is the operating pressure range of this valve?
This valve supports 1.0, 1.6, and 2.5 MPa pressure ratings for a wide range of applications.
Is this valve suitable for steam systems?
Yes, it is specifically designed for use in steam pipelines and high-temperature gas systems.
How does the pilot operation work?
The pilot controls the main valve opening, adjusting pressure downstream with fast response and stability.
What materials are used in the valve internals?
Internal parts are made of stainless steel (2Cr13) and high-grade diaphragm alloys for durability.
Can this valve be installed in horizontal pipelines?
Yes, the design allows installation in standard horizontal pipeline orientations.
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