Can I use pneumatic quick couplers for high-pressure hydraulic applications?

No, you must never use pneumatic fittings or couplers in hydraulic systems. Pneumatic components are typically rated for low pressures around 10 bar (145 PSI), whereas hydraulic components regularly operate above 100 bar. Using a pneumatic coupler for hydraulics will cause catastrophic component failure.

When should I choose polyurethane tubing over nylon for pneumatic lines?

Polyurethane (PU) air hose offers superior flexibility and excellent resistance to kinking and abrasion. This makes it ideal for tight routing inside machinery and dynamic air tool setups. Choose nylon if your application demands higher temperature resistance or higher working pressures than PU can support.

How do I select the right air compressor filter and regulator configuration?

Look at your downstream pneumatic components to determine the filtration level required. A 3-stage unit with a 5-micron filter, regulator, and lubricator (like the AFC2000) is standard for tools requiring oiled air. For clean, dry air applications, use an oil-water separator with an automatic drain to prevent moisture buildup in your lines.

How do I ensure my hydraulic hose fittings fit the hose correctly?

You must match both the inner diameter (ID) of the hydraulic hose and the specific wall thickness (spiral or braided reinforcement layers) to the fitting sleeve. Use a professional-grade hydraulic hose crimping machine calibrated to the exact crimp specifications provided by the fitting manufacturer. Never mix different manufacturers' hoses and fittings unless explicitly approved.

Do your hydraulics and pneumatics carry specific ATEX or hazardous area certifications?

Our catalog contains components suitable for a wide range of industrial environments. However, safety certifications vary by part number. You must check the manufacturer datasheet on the specific product page to verify ATEX, IP, or other hazardous-area approvals before installation.

Hydraulics & Pneumatics

290 products available

Looking for reliable hydraulics and pneumatics to keep your factory floor or mobile equipment running without interruption? Compel is a dedicated hydraulic pneumatic supplier delivering high-performance fluid power and gas-handling equipment directly to industrial operations and trade professionals. Our inventory covers everything from heavy-duty hydraulic hose and hydraulic hose crimping machine setups to precision pneumatic components. We stock essential air compressor fittings, quick couplers, and polyurethane tubing for immediate dispatch.

TBS-02450HYDR-00097

£70.99

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Matching Fitting Materials to System Media

Selecting the right pneumatic fittings and hydraulic fittings depends heavily on the media flowing through your lines. Standard pneumatic systems using compressed air typically rely on nickel-plated brass, polyurethane (PU) tubing, and nitrile rubber (NBR) seals. If your system runs water alongside air, ensure your push-to-connect air & water fittings are rated for both media to prevent internal corrosion.

Polyurethane (PU) tubing: Highly flexible with excellent abrasion resistance, ideal for standard 0-10 bar pneumatic lines.
Nickel-plated brass and brass: Provide excellent structural integrity and corrosion resistance for air compressor fittings and quick couplers.
Nitrile Rubber (NBR) seals: The industry standard for air and common hydraulic oils, offering reliable sealing up to standard operating limits.

Verifying Thread Standards and Pressure Limits

Mixed thread standards cause the majority of connection leaks in industrial fluid power. You must match your port threads precisely, whether they are BSP (British Standard Pipe), NPT (National Pipe Thread), or metric. For pneumatic components, common sizes like G1/4 ports or 1/8 inch NPT require exact matching.

Thread Verification: Never force a BSP male thread into an NPT female port; the thread pitches differ and will fail under pressure.
Sizing Tubing: Match the tube outer diameter (OD) exactly to your push-to-connect fitting sizes, typically ranging from 4mm to 12mm.
Pressure Thresholds: Ensure your chosen air compressor pressure switch and regulators match your system limits, such as standard 90-120 PSI automatic operation.

Choosing Hoses and Crimping Systems for High-Pressure Lines

While pneumatic systems usually operate under 10 bar using push-to-connect setups, hydraulic systems demand high-pressure hydraulic hose and permanent fittings. If you assemble lines in-house, investing in a reliable hydraulic hose crimping machine is critical. This machinery secures hydraulic hose fittings permanently to the hose end, preventing dangerous blowouts. Always verify that your hydraulic components, hoses, and crimpers are system-compatible before assembly.

Buying guide

Choosing Hydraulics & Pneumatics

Can I use pneumatic quick couplers for high-pressure hydraulic applications?: No, you must never use pneumatic fittings or couplers in hydraulic systems. Pneumatic components are typically rated for low pressures around 10 bar (145 PSI), whereas hydraulic components regularly operate above 100 bar. Using a pneumatic coupler for hydraulics will cause catastrophic component failure.
When should I choose polyurethane tubing over nylon for pneumatic lines?: Polyurethane (PU) air hose offers superior flexibility and excellent resistance to kinking and abrasion. This makes it ideal for tight routing inside machinery and dynamic air tool setups. Choose nylon if your application demands higher temperature resistance or higher working pressures than PU can support.
How do I select the right air compressor filter and regulator configuration?: Look at your downstream pneumatic components to determine the filtration level required. A 3-stage unit with a 5-micron filter, regulator, and lubricator (like the AFC2000) is standard for tools requiring oiled air. For clean, dry air applications, use an oil-water separator with an automatic drain to prevent moisture buildup in your lines.
How do I ensure my hydraulic hose fittings fit the hose correctly?: You must match both the inner diameter (ID) of the hydraulic hose and the specific wall thickness (spiral or braided reinforcement layers) to the fitting sleeve. Use a professional-grade hydraulic hose crimping machine calibrated to the exact crimp specifications provided by the fitting manufacturer. Never mix different manufacturers' hoses and fittings unless explicitly approved.
Do your hydraulics and pneumatics carry specific ATEX or hazardous area certifications?: Our catalog contains components suitable for a wide range of industrial environments. However, safety certifications vary by part number. You must check the manufacturer datasheet on the specific product page to verify ATEX, IP, or other hazardous-area approvals before installation.

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Matching Fitting Materials to System Media

Verifying Thread Standards and Pressure Limits

Choosing Hoses and Crimping Systems for High-Pressure Lines

Choosing Hydraulics & Pneumatics

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