Compactor Hydraulic Accessories — Fittings, Gauges, Couplings, and Filters

What this page covers

Hydraulic accessories are everything that isn't a pump, valve, or cylinder — but every accessory matters. A leaking fitting drains an entire reservoir overnight. A low oil level you can't see starves the pump. A clogged filter destroys a pump. Stocking the most-replaced accessories is the cheapest hydraulic system maintenance you can do.

PRT stocks the standard industrial fittings (NPT, JIC, SAE O-ring), couplings, return-line and suction filters, and reservoir hardware (breathers, fill caps, drain valves). Our best sellers are gauges: 3-inch and 5-inch sight gauges for checking reservoir oil level at a glance, and pressure gauges with color-coded or standard black-and-white dials. Most ship same day.

How to choose

For fittings and couplings, match by thread type (NPT, JIC, SAE O-ring) and thread size. For sight gauges, match the length (3-inch or 5-inch) and the bolt spacing on the reservoir. For pressure gauges, pick a range above the system's working pressure and a dial style: color-coded dials show the normal operating zone at a glance, and black-and-white dials give a clean reading for diagnostics.

A sight gauge is the cheapest way to catch a leak early. If the oil level drops between checks, find the leak before the pump runs dry.

Hydraulic accessory categories

• Hydraulic FittingsNPT, JIC, SAE O-ring fittings in standard thread sizes.
• Hydraulic CouplingsCouplings and adapters for joining standard hydraulic lines.
• Hydraulic FiltersSuction strainers, return-line filters, and pressure-line filters.
• Sight Gauges3-inch and 5-inch sight gauges for reading reservoir oil level and condition.
• Pressure GaugesColor-coded and black-and-white dial gauges, 0-3000 PSI and 0-5000 PSI.
• Reservoir HardwareBreathers, fill caps, drain valves.