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HDSL
Download DatasheetHDSL Series decompression block
Holmbury’s 3-Line decompression block offers the perfect easy connection solution for skid steer loader, track loader and compact wheel loader machines. Designed as a drop in replacement for the Faster 4BD4FH and 4BD4FI block assembly without any re-plumbing.
Connect Under Pressure
Min Spill
Features
- Push activation feature allows simple decompression
- Designed for use with standard 'off the shelf' ISO 16028 couplings
- Coupling arrangement can be ordered in 1/2" (Size 12), 5/8" (Size 16) or 3/4" (Size 19)
- Case drain coupling is standard 3/8" (Size 10)
- Alternative thread terminations available for rear ports
Accessories
- Not applicable
Construction
- Block body is anodised aluminium
- Rear ports are carbon steel trivalent plating
- Couplings are carbon steel with zinc nickel plating (1200 hours with no red rust in salt spray tests)
- Supplied with Nitrile and Polyurethane seals with a back up ring in PTFE
Applications
- Quick changeover of construction equipment attachments
- Skid steer loaders
- Track loaders
- Excavators
- Compact loaders
- Utility vehicles
AVAILABLE SEALS AND TEMPERATURE RANGE
All carbon steel products have Nitrile Butadiene Rubber seals fitted as standard. All stainless steel products have Fluoro-elastomer Rubber (Viton®) seals fitted as standard. Special seal materials available on request.
0°
Nitrile
EPDM
Viton®
Kalrez®
0°
Viton®
Kalrez®
Nitrile
EPDM
| Abbreviation | Trade Name | Chemical Name | Min Temp. | Max Temp. |
| NBR XNBR | Chemigum®, Hycar8, Breon®, Butakon®, Butacril®, Buna-N®, Perbunan®, Paracril®, Krynac®, Europrene-N®, Nipol® | Nitrile Butadiene Rubber Carboxylated Nitrile Rubber | -40°C (-40°F) | 106°C (223°F) |
| FKM (FPM) | Dai-el®, Fluorel®, Tecnoflon®, Viton® | Fluoro-elastomer Rubber | -20°C (-4°F) | 200°C (392°F) |
| EPR EPDM | Buna-AP®, Dufral®, Epsyn®, Nordel®, Epcar8, Keltan®, Royalene®, Polysar-EPDM® | Ethylene Propylene Copolymer Ethylene Propylene Terpolymer | -50°C (-58°F) | 120°C (248°F) |
| FVMQ | Silastic 1S®, FSE® | Fluorosilicone Rubber | -65°C (-85°F) | 170°C (338°F) |
| FFKM | Perlast®, Kalrez®, Chemraz®, Kaflon® | Perfluoroelastomer | -25°C (-13°F) | 300°C (572°F) |