H41H Lift Check Valve
- Product Model: H41H Series Flanged Lift Check Valve (H41H-16 / 16Q / 16C / 25Q / 25)
- Pressure Rating: PN16 (1.6MPa) / PN25 (2.5MPa)
- Body Material: Gray Cast Iron / Ductile Iron / WCB Cast Steel
- Sealing Material: 2Cr13 Stainless Steel (with optional hard alloy overlay)
- Applicable Media: Water, Steam, Oil, and weak corrosive media
- Working Temperature: ≤200℃ / ≤300℃ / ≤425℃ (depending on material)
- Connection Type: Flanged (compliant with GB/T 9113 standard)
- Core Function: Automatically prevents medium backflow to protect pumps and equipment
- Installation: Suitable for vertical/horizontal pipelines, with direction marked on valve body
- Application Scenarios: Petroleum, chemical, power, water treatment and industrial pipeline systems
Gaoshan Valve – H41H Flanged Lift Check Valve
Model Series: H41H-16 / H41H-16Q / H41H-16C / H41H-25Q / H41H-25 | Pressure Class: PN16 / PN25 | Connection: Flanged
H41H lift check valve is an automatic valve that prevents medium backflow in pipelines. It operates by the force of the medium flow, automatically opening and closing to protect pumps, motors, and equipment from reverse flow damage. Widely used in water, steam, oil and non-corrosive medium pipelines.
✅ Core Features & Advantages
- Automatic Anti-Backflow: The valve disc opens/closes automatically based on medium flow force, preventing reverse flow and protecting pipeline equipment.
- Reliable Sealing Performance: Valve seat and disc sealing surfaces are made of 2Cr13 stainless steel, with optional hard alloy overlay for wear, corrosion, and high temperature resistance.
- Simple & Durable Structure: Compact design with few moving parts, stable operation, and easy maintenance.
- Multiple Material Options: Available in gray cast iron, ductile iron, and WCB cast steel bodies to suit different temperature and pressure requirements.
- Wide Application Range: Suitable for water, steam, petroleum products, and weak corrosive media in petroleum, chemical, power, and industrial systems.
- Flexible Installation: Vertical disc type for vertical pipelines, horizontal disc type for horizontal pipelines, meeting various installation scenarios.
📊 Performance Specifications
| Model | Nominal Pressure (MPa) | Shell Test Pressure (MPa) | Seal Test Pressure (MPa) | Max Working Temperature (℃) | Applicable Medium |
|---|---|---|---|---|---|
| H41H-16 | 1.6 | 2.4 | 1.8 | ≤200 (Gray Cast Iron) | Water, Steam, Oil |
| H41H-16Q / 25Q | 1.6 / 2.5 | 2.4 / 3.8 | 1.8 / 2.8 | ≤300 (Ductile Iron) | Water, Steam, Oil |
| H41H-16C / 25 | 1.6 / 2.5 | 2.4 / 3.8 | 1.8 / 2.8 | ≤425 (Cast Steel WCB) | Water, Steam, Oil |
🛠️ Main Component Materials
| Model | Valve Body / Bonnet | Valve Seat / Disc |
|---|---|---|
| H41H-16 | Gray Cast Iron | 2Cr13 Stainless Steel |
| H41H-16Q / 25Q | Ductile Iron | 2Cr13 Stainless Steel |
| H41H-16C / 25 | WCB Cast Steel | 2Cr13 Stainless Steel |
📐 Main Dimensions & Weights
| Nominal Pressure | DN (mm) | Face-to-Face L (mm) | Height H (mm) | Handwheel Dia. D0 (mm) | Weight (kg) |
|---|---|---|---|---|---|
| PN16 | 40 | 200 | 96 | 47 | 8 |
| 50 | 230 | 103 | 56 | 11 | |
| 65 | 290 | 150 | 60 | 14 | |
| 80 | 310 | 156 | 180 | 22 | |
| 100 | 350 | 166 | 205 | 32 | |
| 125 | 400 | 201 | 245 | 60 | |
| 150 | 480 | 238 | 285 | 95 | |
| 200 | 600 | 268 | 320 | 120 | |
| PN25 | 25 | 160 | 90 | 100 | 6 |
| 32 | 180 | 110 | 115 | 9 | |
| 40 | 200 | 115 | 135 | 11 | |
| 50 | 230 | 126 | 150 | 14 | |
| 65 | 290 | 165 | 180 | 25 | |
| 80 | 310 | 165 | 180 | 32 | |
| 100 | 350 | 180 | 205 | 45 |
*Dimensions are for reference only. Contact us for complete drawings for your specific model.
Product Image & Structure Drawing
📝 Design & Manufacturing Standards
- Design Standard: GB/T 12235
- Face-to-Face Dimensions: GB/T 12221
- Flange Standards: GB/T 9113, JB/T 79, HG/T 20596
- Testing & Inspection: GB/T 13927, JB/T 9092
- Applicable Standards: EN 13709, EN 558 (optional)
⚙️ Installation & Maintenance Guidelines
- Installation Requirements: Do not let the check valve bear pipeline weight; large valves need independent support to avoid pipeline stress impact.
- Flow Direction: Install the valve with the medium flow direction matching the arrow marked on the valve body.
- Pipeline Installation: Vertical disc lift check valves must be installed on vertical pipelines; horizontal disc types on horizontal pipelines.
- Maintenance Tips: Keep the valve clean during operation; inspect sealing surfaces regularly for wear to ensure reliable anti-backflow performance.
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