Kromschröder VGBF Gas Pressure Regulator
The Kromschröder VGBF is a spring-loaded gas pressure regulator with inlet pressure compensation diaphragm and zero shut-off, sizes DN15 to DN150, keeping the outlet pressure steady (5-350 mbar) despite changing flow and inlet pressure. For natural gas, LPG, biogas and air; no breather line needed; hydrogen-suitable.
- Inlet pressure max 500 mbar (7.25 psig), 1 bar (14.5 psig) and 4 bar (58 psig)
- Outlet pressure (VGBF 15 – 50) 5 – 350 mbar (2 – 138 "WC)
- Outlet pressure (VGBF 65, 150) 5 – 160 mbar (2 – 63 "WC)
- Outlet pressure (VGBF 80, 100) 5 – 350 mbar (2 – 138 "WC)
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PRODUCT DESCRIPTION
Kromschröder VGBF Gas Pressure Regulator
Pressure regulator for natural gas, town gas, LPG (gaseous), biologically produced methane (max. 0.02% by vol. H2S) and air.
Specifications:
- DN: 15 to 150,
- Inlet pressure: max 500 mbar (7.25 psig), 1 bar (14.5 psig) and 4 bar (58 psig).
- Outlet pressure:
- VGBF 15 – 50: 5 – 350 mbar (2 – 138 “WC),
- VGBF 65, 150: 5 – 160 mbar (2 – 63 “WC),
- VGBF 80, 100: 5 – 350 mbar (2 – 138 “WC).
- VGBF..05: EN 88, Class A, Group 2.
- VGBF..10, VGBF..40: EN 334, Accuracy Class: AC 10,
- Connections: NPT thread (DN15-50), ANSI flange (DN50-100).
- Operating temperature: -15 to +60 °C
- Weight: 0.9 – 46.5 kg
Materials:
- Housing: aluminum
- Diaphragm: NBR or Viton
- Disc: NBR or Viton
Standards
- (EU) 2016/426 (GAR) – Gas Appliances Regulation
- DIN EN 88-1:2011
- DIN EN 88-2:2008
- DIN EN 334:2009
Applications
According to Kromschröder, the VGBF is used in the gas inlet sections of the iron, steel, glass and ceramics industries, and in commercial heat generation such as the packaging, paper and foodstuffs industries. An additional safety diaphragm means no breather line is required, except for installation to NFPA 86.
Installation
- Installation position: any, not upside down. From DN65 the spring dome should point vertically upwards.
- Install a filter (GFK) upstream, and prevent thread cuttings and sealing material from entering the housing. The regulator must not touch masonry (minimum clearance 20 mm) and needs space to change the spring.
- Under EN 746-2, a safety shut-off valve upstream of the regulator and a safety relief valve are required. The furnace chamber pressure can be fed forward as a compensation signal, and a damping valve is available as an accessory.
VGBF versions
- VGBF..05: internal impulse, to EN 88 Class A Group 2.
- VGBF..10 and VGBF..40: to EN 334, accuracy class AC 10.
- Rp thread or ISO flange; the VGBF..T versions use NPT thread or ANSI flange.
Information to send for a quote
- The DN size, version (..05, ..10 or ..40) and connection type (Rp/NPT thread or ISO/ANSI flange).
- The gas type, inlet pressure, required outlet pressure and flow.
- The diaphragm and disc material (NBR or Viton) and whether furnace chamber pressure compensation is needed.
TECHNICAL SPECIFICATIONS
Specifications of Kromschröder VGBF Gas Pressure Regulator
| PARAMETER | VALUE |
|---|---|
| Model | VGBF |
| Inlet pressure | max 500 mbar (7.25 psig), 1 bar (14.5 psig) and 4 bar (58 psig) |
| Outlet pressure (VGBF 15 – 50) | 5 – 350 mbar (2 – 138 "WC) |
| Outlet pressure (VGBF 65, 150) | 5 – 160 mbar (2 – 63 "WC) |
| Outlet pressure (VGBF 80, 100) | 5 – 350 mbar (2 – 138 "WC) |
| Standard VGBF..05 | EN 88, Class A, Group 2 |
| Standard VGBF..10, VGBF..40 | EN 334, Accuracy Class AC 10 |
| Connections | NPT thread (DN15-50), ANSI flange (DN50-100) |
| Operating temperature | -15 to +60 °C |
| Weight | 0.9 – 46.5 kg |
| Diaphragm | NBR or Viton |
| Disc | NBR or Viton |
| Standards | (EU) 2016/426 (GAR), DIN EN 88-1:2011, DIN EN 88-2:2008, DIN EN 334:2009 |
| DN | 15 to 150 |
| Housing | aluminum |
| Gas types | natural gas, town gas, LPG (gaseous), methane-based biogas (max. 0.02% by vol. H2S) and air |
| Brand | Kromschröder |
| Origin | Germany |
Specifications may vary with the ordered configuration. Contact a CAD engineer for sizing to your actual operating conditions.
FAQ
Frequently asked questions about CAD-TH-240
How do VGBF..05, ..10 and ..40 differ?
The VGBF..05 has an internal impulse and meets EN 88 Class A Group 2. The VGBF..10 and ..40 meet EN 334, accuracy class AC 10. Send the inlet and outlet pressures so CAD can select the version.
Is a breather line needed?
No, thanks to the additional safety diaphragm, except for installation to NFPA 86.
What should I note when installing a VGBF?
Mount in any position except upside down; from DN65 the spring dome should point up. Fit a filter upstream, keep 20 mm clearance from masonry, and under EN 746-2 a safety shut-off valve upstream and a safety relief valve are required.
What should I send CAD to quote a VGBF?
Send the DN size, version, connection type, gas type, inlet and outlet pressures and flow. CAD quotes within 24 working hours.
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