Deskripsi
Steam Pressure Reducing Valve
Model : Y43H-16C
Brand : Shanghai Valve Factory
Product Overview:
The Y43H-16C is a pilot-operated piston-type steam pressure reducing valve, designed to maintain stable downstream pressure in steam systems. It uses a pilot valve to sense outlet pressure and modulate the main valve via a piston mechanism, ensuring precise control even under fluctuating inlet conditions.
- Type: Pilot piston-type pressure reducing valve
- Model: Y43H-16C
- Nominal Diameter: DN50
- Pressure Class: PN16
- Medium: Steam, air, non-corrosive gases
- Function: Pressure reduction and stabilization
Detailed Specifications (DN50):
| Parameter | Value |
|---|---|
| Nominal Diameter | DN50 (2″) |
| Nominal Pressure | PN16 (1.6 MPa) |
| Inlet Pressure Range | Up to 1.6 MPa |
| Outlet Pressure Range | 0.1 – 1.0 MPa (adjustable) |
| Temperature Range | -40°C to +350°C |
| Flow Characteristic | Modulating (pilot-controlled) |
| Leakage Class | GB12245-1989 (tight shut-off) |
| Test Pressure (Shell/Seal) | 2.4 MPa / 1.6 MPa |
Material List:
| Component | Material |
|---|---|
| Body / Bonnet | WCB (Cast Carbon Steel) |
| Valve Seat | 2Cr13 / SS304 / SS316 |
| Cylinder Sleeve | 2Cr13 / Copper |
| Piston | Cast Iron / Stainless Steel |
| Pilot Valve Stem | 2Cr13 |
| Main Valve Spring | 1Cr18Ni9Ti |
| Pilot Valve Spring | 50CrVA |
| Regulating Spring | 60Si2Mn |
| Diaphragm | Stainless Steel or Composite |
Drawing Dimensions (DN50, PN16):
| Dimension | Value (mm) |
|---|---|
| L (Face-to-Face) | 250 |
| H (Overall Height) | 270 |
| H1 (Pilot Valve Height) | 345 |
| Flange OD (D) | ~165 |
| Bolt Circle (D1) | ~125 |
| Bore (D2) | ~99 |
| Bolt Holes | 4 × φ18 |
These dimensions follow GB/T 17241.6 or EN 1092-2 PN16 standards.
Application Areas:
This valve is widely used in:
- Steam distribution systems
- Industrial boilers and heat exchangers
- HVAC systems
- Chemical and petrochemical plants
- Textile and food processing industries
- Urban heating networks
Its pilot-piston design ensures stable downstream pressure even with fluctuating upstream conditions, making it ideal for precision steam control.
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