Nothing in your fleet cycles like a packer blade.

Because the duty is cycle count, not pressure. Lift and packer circuits see frequent directional changes, moderate to high pressure and significant hose flexing, and the packer blade circuit in particular takes repeated pressure spikes as the blade meets increasing resistance in the load. Hose fails by flex and impulse fatigue at the ferrule long before it approaches a burst rating.

Wire-braid or spiral-wire reinforced construction, specified by impulse grade rather than by working pressure alone. ISO 18752 defines grades A to D by impulse cycles at a stated temperature and impulse pressure, which reflects packer duty far more honestly than a burst figure. EN 856 4SP is a common spiral choice on heavier packers.

Typically pressure spikes as the packer blade stalls into compacted material. The same condition shows up as systems overshooting their intended force and as repeated cylinder damage. The relief valve has to be sized for that spike condition, not for the steady-state working pressure.

Because a baler platen cycles almost continuously, interval-based replacement is more sensible than running to failure. DIN 20066 practice gives a defensible outer limit, assemblies not beyond six years in service from date of manufacture with bulk hose no more than four years old at assembly, but on a high-cycle baler the practical interval is usually shorter and should be based on observed life.

Load-holding check valves, typically pilot-operated, with the lowering rate metered by a flow control or needle valve. This is a safety function rather than a convenience, so it is not a place to improvise on specification.

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.

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.

O-ring sealed families. Tapered threads such as NPT and BSPT rely on thread interference, which vibration and thermal cycling slowly defeat, and over-torquing makes it worse rather than better. O-ring face seal to ISO 8434-3 and ORB ports to SAE J1926 seal on an elastomer instead.

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.