TECHNICAL DATA SHEET
Product: DN50-PN40-RF Axial Check Valve
- PRODUCT DESCRIPTION
The axial check valve (also known as axial flow check valve) is designed for minimal flow resistance and pulsation reduction. Featuring an axial flow path and spring-assisted closing mechanism, it is suitable for pipeline systems requiring low water hammer, minimal pressure drop, and tight sealing. Suitable for horizontal or vertical installation (flow direction must be observed).
- KEY TECHNICAL PARAMETERS
Item | 仕様 | Remarks |
Nominal Diameter (DN) | 50 mm | 2 inch |
Nominal Pressure (PN) | 40 bar | Approx. Class 300 |
Connection Type | RF (Raised Face Flange) | Per EN 1092-1 / ASME B16.5 |
Design Type | Axial, Spring-Assisted | Disc moves parallel to pipeline axis |
Applicable Media | Water, Oil, Steam, Gas, etc. | Dependent on seat material |
Media Temperature Range | -20°C ~ +200°C | High-temp version available up to +400°C |
ボディ素材 | Carbon Steel WCB / Stainless Steel 304 / 316 | Duplex steel etc. optional |
Disc Material | SS 304/316 + Stellite hard-faced sealing | |
Seat Seal | Metal Hard Seal / Soft Seal (PTFE) | Optional |
Spring Material | SS 316 / Inconel X-750 | Selected per media temperature |
Flange Standard | EN 1092-1 (PN40) / ASME B16.5 (Class 300) | Other standards available upon request |
Cracking Pressure | ≤ 0.1 bar | Low differential pressure required to open |
Full Flow Pressure Drop | ≤ 0.02 bar | Typical value, depends on flow velocity |
- DIMENSIONS & CONNECTIONS (Typical)
Dimension | Value (mm) |
Face-to-Face Length L | Approx. 200-250 |
Overall Height H | Approx. 150-180 |
Flange OD D | 165 |
Bolt Circle Diameter K | 125 |
Bolt Holes (Number × Diameter) | 4 × φ18 |
Flange Thickness t | Approx. 24 |
Flange Face | RF (Raised Face) Ra≤3.2μm |
Weight (WCB) | Approx. 12-15 kg |
- PERFORMANCE CHARACTERISTICS
- Low Flow Resistance: Axial streamlined flow path, lower pressure drop compared to conventional swing or lift check valves.
- Rapid Closing: Spring-assisted closure minimizes reverse flow and water hammer.
- Reliable Sealing: Metal hard seal for high temperature/pressure; soft seal option for bubble-tight shut-off.
- Flexible Installation: Suitable for horizontal or vertical mounting (arrow must point upward or horizontally in flow direction).
- Easy Maintenance: Most designs allow in-line maintenance without removing from pipeline.
- TYPICAL APPLICATIONS
- Petrochemical: Pump discharge, compressor pipelines.
- Power Industry: Feedwater systems, condensate lines.
- Water Supply: High-pressure pump discharge, network backflow prevention.
- Industrial Processes: Steam lines, cooling systems.
- TESTING & CERTIFICATION
Test Item | 標準 | Requirement |
Shell Strength Test | EN 12266 / API 598 | 1.5 × PN (60 bar) |
Seat Leakage Test | EN 12266 / API 598 | 1.1 × PN (44 bar) |
Reverse Flow Seal Test | As per customer request | Gas or liquid test available |
Material Certificate | EN 10204 3.1 | Optional |
- INSTALLATION & MAINTENANCE NOTES
- Verify valve flow direction arrow matches medium flow direction before installation.
- Recommended to install a strainer upstream to prevent seal damage from debris.
- For vertical installation, ensure spring is below the disc (refer to specific design drawing).
- Periodically check for smooth operation and abnormal vibration/noise.
- ORDERING EXAMPLE
DN50-PN40-RF Axial Check Valve, Body WCB, Disc/Seat 304+Stellite, Spring 316, Metal Hard Seal, EN 1092-1 Flange.
Note: The above data represents typical design values. Actual product specifications may vary depending on specific design, material selection, or manufacturing standards. Please confirm detailed specifications with the manufacturer before ordering.
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