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The BFG Series Gear Pump Straight Square Flange Adapter is a precision-engineered hydraulic fitting designed to connect hydraulic gear pumps with EO 24° cone tube systems. The square four-bolt flange provides a secure mounting interface, while the EO 24° cone connection ensures reliable metal-to-metal sealing and minimizes the risk of leakage.
Manufactured with precision machining, the adapter delivers accurate dimensions, smooth sealing surfaces, and excellent mechanical strength. Its straight configuration allows direct pipeline installation, reducing flow resistance while simplifying hydraulic system layouts.
Constructed from premium carbon steel and available with corrosion-resistant zinc-plated surface treatment, the BFG series provides dependable performance under demanding operating conditions. Multiple flange dimensions and tube sizes are available to meet different hydraulic system requirements, and OEM as well as customized specifications are supported.
Designed for hydraulic pumps, manifolds, power units, valves, and industrial hydraulic equipment, the BFG Series offers reliable sealing performance and long service life for medium- and high-pressure hydraulic applications.
Designed for hydraulic gear pump connections
Straight square four-bolt flange design
EO 24° cone tube connection
Reliable metal-to-metal sealing
Precision-machined sealing surfaces
High-strength carbon steel construction
Corrosion-resistant zinc-plated finish
Easy installation and maintenance
OEM and customized specifications available
| LK | D1 | D3 | L1 | L2 | L4 | LA | S1 | DB | Bolt (Metric) | O-Ring | Weight （Carbon Steel）(kg) | Working Pressure (Bar) |
| 35 | 10L | 8 | 30 | 23 | 39 | 39 | 19 | 6.4 | M6×22 | 20×2.5 | 0.15 | 315 |
| 35 | 12L | 10 | 30 | 23 | 39 | 39 | 22 | 6.4 | M6×22 | 20×2.5 | 0.16 | 315 |
| 35 | 15L | 12 | 30 | 23 | 38 | 39 | 27 | 6.4 | M6×22 | 20×2.5 | 0.19 | 250 |
| 35 | 16S | 12 | 30 | 21.5 | 39.5 | 39 | 30 | 6.4 | M6×22 | 20×2.5 | 0.21 | 315 |
| 40 | 15L | 12 | 35 | 28 | 43 | 42 | 27 | 6.4 | M6×22 | 26×2.5 | 0.17 | 100 |
| 40 | 18L | 15 | 35 | 27.5 | 44 | 42 | 32 | 6.4 | M6×22 | 26×2.5 | 0.22 | 100 |
| 40 | 22L | 19 | 35 | 27.5 | 44.5 | 42 | 36 | 6.4 | M6×22 | 26×2.5 | 0.24 | 100 |
| 40 | 28L | 24 | 35 | 27.5 | 44.5 | 42 | 41 | 6.4 | M6×22 | 26×2.5 | 0.28 | 100 |
| 55 | 20S | 16 | 50 | 39.5 | 61 | 57 | 36 | 8.4 | M8×25 | 32×2.5 | 0.35 | 250 |
| Notes Delivery does not include nuts and cutting rings. For complete flange assemblies or alternative sealing materials, please refer to H3. Please add the appropriate suffix according to the required material and surface treatment. | ||||||||||||
| Material & Ordering Information | ||||||||||||
| Material | Material & Surface Treatment Suffix | Ordering Example (Flange Only) | Standard Seal Material | |||||||||
| Carbon Steel, Cr(VI)-free Zinc Plated | CF | BFG16S/LK350MDCF | NBR | |||||||||
The BFG Series Gear Pump Straight Square Flange Adapter is widely used in hydraulic gear pumps, hydraulic power units, construction machinery, agricultural machinery, industrial automation equipment, machine tools, hydraulic manifolds, mining equipment, and other hydraulic systems requiring secure square flange and EO 24° cone tube connections.
