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To maintain system performance, it is recommended that the gas precharge pressure in your accumulators be checked regularly. A loss in the gas precharge pressure will cause a drop in the system efficiency and could cause damage to the accumulator bladder, diaphragm, or piston.

These charging and gauging units allow hydro-pneumatic accumulators to be charged with dry nitrogen. For this purpose, a charging and gauging unit is connected to a commercially available nitrogen bottle via a flexible charging hose (8 feet/2.44m).

These units allow maintenance personnel to check the current gas precharge pressure of an accumulator and also incorporate a gauge and check valve in the charging connection, and a manual bleed valve with a T-handle. Operating and installation instructions are included with each charging kit.

The FPK250 kit also has Adapters for different connections.

Warning: To avoid injury use a Pressure Regulator on your nitrogen bottle when charging an accumulator with a charging kit.…


The Model GP 8700 is a single-stage, high-pressure regulator that is designed to operate on high-pressure cylinders up to 7500 PSIG.


0-1500, 2500, and 3000 PSIG delivery pressures available One-piece encapsulated valve design with PCTFE seats and an internal filter Ergonomic knob for improved grip 1/4” NPT outlet with stainless steel 1/4” tube fitting 2 1/2” dual scale gauges (psi/bar) Conforms to CGA E-4 standard for gas pressure regulators Made in the USA

*Models with the following CGA inlet connections are self-venting – 580, 677…