KOENIG CHECK VALVE® SERIES BF 5.5mm Forward
- Design based on the expansion principal
- Available in standard sizes, with different opening pressures and screens
- Specific customer solutions on request
KOENIG CHECK VALVE® SERIES BF 5.5mm Forward
KOENIG CHECK VALVE® SERIES BF 5.5mm Forward – OVERVIEW
FORWARD FLOW CHECK VALVE | INSTALLATION HOLE |

Product SpecificationsPressure performance3D CADTechnical DownloadsVideo
Check Valve Forward Flow – Unscreened |
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Model Code | Cracking Pressure [bar] |
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BFAA055U000 | 0 (no Spring) |
BFAA055U014 | 0.14 (±0.05) |
BFAA055U025 | 0.25 (±0.10) |
BFAA055U040 | 0.40 (±0.30) |
BFAA055U050 | 0.50 (±0.30) |
BFAA055U100 | 1.00 (±0.30) |
BFAA055U200 | 2.00 (±0.30) |
Check Valve Forward Flow – Screened |
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Model Code | Cracking Pressure [bar] |
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BFAA055S000 | 0 (no Spring) |
BFAA055S014 | 0.14 (±0.05) |
BFAA055S025 | 0.25 (±0.10) |
BFAA055S040 | 0.40 (±0.30) |
BFAA055S050 | 0.50 (±0.30) |
BFAA055S100 | 1.00 (±0.30) |
BFAA055S200 | 2.00 (±0.30) |
Materials |
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Sleeve | 1.4305/AISI 303 |
Pin | 1.4021/AISI 420A |
Cage | 1.4303/AISI 305 |
Spring | 1.4310/AISI 301 |
Ball | 1.3541/AISI 420C |
Screen | 1.4401/AISI 316L |
Performance |
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Max. Installation Force | 6200 N |
Max. Working Pressure in Check Direction | 280 bar |
Max. Working Pressure in Flow Direction | 40 bar |
Max. Leakage on Air | 20 sccm/min. @ 1.72 bar |
Max. Leakage on hydraulic fluid (HLP46) | 1 drop/min. |
Cycle Test on hydraulic fluid (HLP46) | 1 Mio. Cycles, 5 Hz, 6 bar, 50˚C |
Screen Size | 125 Microns Absolute |
Material of test body | EN-GJS-600-3 |
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Operation
Technical Information
Design Support
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