Deskripsi
CF8 Wafer-Connected Swing Check Valve
Model : H74H-16P DN80
Brand : Shanghai Valve Factory
Product Overview
The H74H-16P DN80 is a compact, wafer-type swing check valve designed to prevent reverse flow in horizontal pipelines. Its swing disc opens with forward flow and closes automatically when flow stops or reverses. The CF8 stainless steel body offers excellent corrosion resistance, making it suitable for water, oil, gas, and mildly corrosive fluids.
- Type: Swing check valve (wafer type)
- Model: H74H-16P
- Size: DN80 (NPS 3″)
- Connection: Wafer between flanges
- Pressure Rating: PN16
- Design Standard: BS 1868 / GB/T 12236 / API 6D
- Installation: Horizontal (standard); vertical (upward flow only)
Specifications (DN80, PN16)
| Parameter | Value |
|---|---|
| Nominal Diameter | DN80 |
| Pressure Rating | PN16 (1.6 MPa) |
| Temperature Range | –29°C to +250°C |
| Flow Direction | Unidirectional |
| Face-to-Face Length | ~60 mm |
| Flange Compatibility | EN 1092-1 / GB/T 9113 PN16 |
| Leakage Class | Class IV or better |
| Disc Type | Swing type (hinged) |
| Seat Type | Metal-to-metal or PTFE insert |
Material List
| Component | Material |
|---|---|
| Body | CF8 (ASTM A351 Grade CF8 / SS304) |
| Disc | CF8 / SS304 + Stellite overlay |
| Hinge Pin | SS304 |
| Seat Ring | SS304 / PTFE / Stellite |
| Gasket | Graphite + SS304 spiral wound |
| Fasteners | SS304 / A193-B8 / A194-8 |
The Stellite overlay on the disc and seat ensures durability and tight sealing under cyclic flow conditions.
Dimensions (DN80, PN16 Wafer Type)
| Dimension | Value (mm) |
|---|---|
| L (Face-to-Face) | ~60–65 |
| D (Flange OD) | ~200 |
| D1 (Bolt Circle) | ~160 |
| D2 (Bore) | ~132 |
| z–φd (Bolt Holes) | 8 × φ18 |
| H (Height) | ~120–140 |
These dimensions conform to EN 558 and GB/T 12221 standards for wafer-type valves.
Application Areas
This valve is ideal for:
- Water supply and treatment systems
- Chemical and petrochemical pipelines
- HVAC and utility systems
- Oil and gas distribution
- Food and pharmaceutical (non-toxic media)
- General industrial fluid control
Its compact wafer design makes it suitable for space-constrained installations, and the CF8 body ensures corrosion resistance in mildly aggressive environments.
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