Hydraulic Hose Fittings

What are the different thread types of hydraulic hose fittings?

• NPT (National Pipe Thread): They have a tapered design and rely on the threads & sealant compound to create a leak-tight connection.
• BSP (British Standard Pipe): They can be either parallel (BSPP) or tapered (BSPT). BSP threads often require the use of sealing washers or thread sealant to ensure a proper seal.
• JIC (Joint Industry Council): They have a 37-degree flare angle and rely on a metal-to-metal seal created by the flared end of the fitting and the mating surface of the connection.
• ORFS (O-Ring Face Seal): ORFS threads utilise an O-ring seal to create a leak-tight connection. They are commonly used in high-pressure hydraulic systems and provide good resistance to vibration and impulse.

How do I clean hydraulic hose fittings?

To remove dirt, debris or other contaminants, use a clean, lint-free cloth or a soft-bristled brush. To avoid damaging the fittings or maintain their integrity, avoid using abrasive materials or harsh chemicals. Q How do I install hydraulic hose fittings?

How do I select the right hydraulic hose fittings?

• Ensure that the fittings are compatible with the type and size of the hydraulic hose you are using.
• Consider the maximum operating pressure of your hydraulic system and choose fittings that can handle the required pressure without leaking or failing.
• Determine the type of connection required on the other components in your system (threaded, flanged or quick-connect) and select fittings that match those connections.
• Consider the fluid being transmitted through the hose and ensure that the fittings are made from materials compatible with that fluid.
• Take into account the operating environment, including temperature, moisture and exposure to chemicals or other corrosive substances.