On a forklift, a leak is not housekeeping. It is lost lift capacity.

Because that point is where the hose passes over a sheave or is bent tighter than its minimum radius. Mast hoses travel over rollers through the full lift stroke, so the wear is concentrated rather than spread. Compact-outside-diameter constructions to EN 857 1SC or 2SC, and small-bend-radius types such as SAE 100R17, exist specifically for this routing.

Reduced lift performance and rough operation are commonly a fluid loss symptom rather than a pump problem. In material handling a leak shows up as lost load-lift capacity first. Check the joints in the lift and tilt circuits before assuming a major component has failed.

Two separate things, and they are often confused. Load-holding in the tilt and lift circuits is done by check valves, typically pilot-operated. Protection against a sudden line failure is done by a velocity fuse fitted in the lift cylinder. Both are safety-relevant, so neither is a place to improvise on specification.

O-ring sealed families rather than tapered metal-to-metal. O-ring face seal to ISO 8434-3 and the 24 degree cone with O-ring to ISO 8434-1 seal on an elastomer rather than on thread interference, which is what you want where a weep becomes a slip hazard and an audit finding.

Both are tapered at the same 1:16 rate, but the thread form angle differs, 55° for BSP and 60° for NPT. In several common sizes they will screw together and appear correct, then weep under pressure because contact is incomplete. BSPP, by contrast, is a parallel thread that seals on a bonded seal against the port face, so without that washer it will not seal at any torque.

We supply the hose, the fittings and the relief, check and needle valves that sit around a self-contained power pack. Send the working pressure, flow rate, port standard and the descent rate behaviour you need and we will confirm what we can hold against it.

Dock levellers and lift tables are long-life fixed assets, so their hoses quietly pass their service life while the equipment still works. DIN 20066 practice is the usual reference: assemblies not beyond six years in service from date of manufacture, with bulk hose no more than four years old at the time of assembly.

No. JIC to SAE J514 and ORB to SAE J1926 share the same UN/UNF thread form but seal completely differently. JIC seals on a 37° metal cone; ORB seals on an O-ring compressed against a machined boss face. Assembling one into the other will not seal reliably and can damage the port.

Yes, and that is the normal route. Share a drawing, a specification or a sample and we confirm dimensions, material, thread standard and pressure rating in writing before production. Where a requirement is beyond what we can reliably hold, we say so at that point rather than after the order.

Tell us anyway. We supply hydraulic valves, fittings and hose pipes. If your requirement sits inside that we would like to take it on, and we will tell you exactly what we can hold and what we cannot. If it sits outside, you will hear that from us up front rather than three weeks into a quote, and where we can we will point you toward a route more likely to work.