Deskripsi
Wafer Check Valve
Model : H71H-16P DN50
Brand : Northern Valve Industry Co., Ltd.
Product Overview
The H71H-16P DN50 is a wafer-type lift check valve manufactured by Northern Valve Industry Co., Ltd. (HNVC). It features a spring-loaded vertical disc that opens with forward flow and closes automatically to prevent backflow. Its compact wafer design allows easy installation between flanges, making it ideal for space-constrained systems in power plants, chemical processing, and water treatment.
Detailed Specifications
| Parameter | Value / Description |
|---|---|
| Model | H71H-16P |
| Nominal Diameter | DN50 (2″) |
| Nominal Pressure | PN16 (1.6 MPa) |
| Connection Type | Wafer (fits between flanges) |
| Design Standard | GB/T 12235, API 598 |
| Face-to-Face Length | ~56 mm |
| Working Temperature | ≤ 200°C |
| Flow Direction | Unidirectional |
| Seal Type | Metal-to-metal or soft seal (optional) |
| Disc Type | Lift-type, spring-loaded |
| Installation Orientation | Vertical or horizontal (horizontal preferred) |
Material Composition
| Component | Material (Typical) |
|---|---|
| Body | CF8 (SS304) or CF8M (SS316) stainless steel |
| Disc | SS304 / SS316 |
| Spring | 50CrVA or SS316 (corrosion-resistant alloy) |
| Seat | Integral with body or optional PTFE insert |
| Fasteners | Stainless steel |
All materials are suitable for corrosive media, steam, oil, and water, and conform to CE/API/ISO standards.
Dimensions (DN50, PN16)
| Dimension | Value (mm) |
|---|---|
| Face-to-Face (L) | 56 mm |
| Outer Diameter (D) | 105 mm |
| Bolt Circle (K) | 125 mm |
| Flange Thickness | ~16–20 mm |
| Disc Diameter | ~80 mm |
Application Scope
- Steam and Condensate Lines
- Water Supply and Drainage Systems
- Chemical and Petrochemical Pipelines
- Power Plant Auxiliary Systems
- Compact Industrial Skids
Ideal for systems requiring automatic backflow prevention, low cracking pressure, and minimal footprint.
Estimated Weight
- Valve Unit (DN50): ~2.5–3.5 kg
- With Packaging: ~4.0–5.0 kg
Ulasan
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