Description
Buy H41/H42 Vertical & Horizontal Check Valve PN1.0 to 10.0 Stainless Steel Flange
The H41/H42 Vertical & Horizontal Check Valve PN1.0 to 10.0 Stainless Steel Flange from VALVEHU is a precision-engineered non-return valve designed for efficient backflow prevention in high-pressure industrial systems. This product is manufactured to meet GB12236–2008 standards for design, with face-to-face and flange dimensions compliant with GB12221–2005 and JB/T79–2015, ensuring full interchangeability and reliable installation across various systems.
Available in pressure ratings from PN1.0 to PN10.0, this check valve offers exceptional adaptability for pipelines conveying water, steam, oil, gas, and corrosive fluids. The H41 model is intended for horizontal installation, while the H42 model supports vertical flow systems, each utilizing gravity and system pressure to ensure effective backflow control without the need for external actuation.
The valve body is offered in a wide range of materials, including cast iron, carbon steel, Cr-Mo steel, and stainless steel grades (P and R), making it compatible with diverse process media such as acids, organic compounds, ammonia, and liquefied gases. The product supports maximum operating temperatures up to 550°C, depending on the material selected.
Thanks to its robust internal construction and compatibility with aggressive fluids, the H41/H42 check valve is ideal for use in chemical plants, HVAC systems, petrochemical pipelines, and general industrial water and steam networks. VALVEHU’s quality assurance ensures adherence to international manufacturing standards and longevity under demanding operating environments.
If you’re seeking expert advice on check valves or other industrial valve solutions, our technical team at VALVEHU China is ready to support your selection with fast response and reliable supply.
Technical Specifications
- Valve Type: Lift and vertical check valve (non-return)
- Model: H41 / H42
- Pressure Ratings: PN1.0 to PN10.0
- Body Material: Stainless steel, carbon steel, cast iron, Cr-Mo steel
- Connection Type: Flanged
- Installation: H41 horizontal, H42 vertical
- Operation: Passive, pressure-based closing
- Applicable Fluids: Water, oil, steam, ammonia, gas, acids
- Temperature Limit: Up to 550°C based on material
- Compliance Standards: GB12236, GB12221, JB/T79
Applicable Materials, Media, and Temperature Ratings for H41/H42 Check Valves
| Valve Body Material | Applicable Media | Max Operating Temperature (°C) |
|---|---|---|
| Cast Iron with Brass Seat | Water, Steam, Oil | ≤200 |
| Cast Iron with Iron Seat | Acidic Fluids | ≤100 |
| Carbon Steel (C) | Water, Steam, Oil Products | ≤425 |
| Stainless Steel (P) | Water, Oil, Organic Acids | ≤200 |
| Stainless Steel (R) | Water, Oil, Sulfuric Acid Types | ≤200 |
| Cr-Mo Steel (1) | Water, Steam, Oil | ≤550 |
| H41N, H42N | Gas, Mixed Liquefied Gases | -40~80 |
| H41B, H42B | Liquid Ammonia, Ammonia Gas | -80~80 |
| PTFE | Any Acids, Corrosive Liquids | ≤150 |
Check Valve Dimensions (H41 Lift / H42 Vertical Type) – PN1.0 to PN10.0 MPa
Unit: mm
| 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| DN | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | |
| PN1.0 (1.6)MPa | L1 | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 550 | 650 | 750 | 850 | 950 |
| L2 | 85 | 95 | 105 | 150 | 160 | 170 | 180 | 200 | 210 | 275 | 300 | 380 | 400 | 420 | 500 | 500 | |
| PN2.5MPa | L1 | 130 | 150 | 160 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 550 | 650 | 750 | 850 | 950 |
| L2 | 85 | 95 | 105 | 150 | 160 | 170 | 180 | 200 | 210 | 275 | 300 | 380 | 400 | 420 | 500 | 500 | |
| PN4.0MPa | L1 | 130 | 150 | 150 | 180 | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 550 | 650 | 750 | 850 | 950 |
| L2 | 85 | 95 | 950 | 150 | 160 | 170 | 280 | 200 | 210 | 275 | 300 | 380 | 400 | 420 | 500 | 500 | |
| PN6.4MPa | L1 | 170 | 190 | 90 | 230 | 260 | 300 | 340 | 380 | 430 | 500 | 550 | 650 | 750 | 900 | ||
| L2 | 170 | 190 | 210 | 230 | 250 | 290 | 320 | 400 | |||||||||
| PN10.0MPa | L1 | 170 | 190 | 90 | 230 | 260 | 300 | 340 | 430 | 500 | 550 | 650 | 750 | 900 | |||
| L2 | 270 | 190 | 210 | 230 | 250 | 290 | 320 | 400 |
FAQ
What is the difference between H41 and H42 check valves?
H41 is for horizontal installation, while H42 is designed for vertical flow with top outlet.
Can this valve handle high-temperature steam applications?
Yes, Cr-Mo steel versions support up to 550°C, ideal for steam pipelines.
What pressure ratings are supported by H41/H42 valves?
These valves are available from PN1.0 to PN10.0 MPa, covering most industrial needs.
Is the valve suitable for corrosive or chemical fluids?
Yes, with PTFE or stainless steel materials, it handles acids and organic chemicals effectively.
Does this valve require regular maintenance?
No, its self-closing design with minimal moving parts ensures long-term, low-maintenance operation.
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