Maximator BUG20-120-30-B-000 Air Driven Liquid Pressure Pump Unit

Module Feature

BUG20-120-30-B-000 is Maximator BUG series air-driven high-pressure liquid plunger pump. It uses compressed air as drive power source, no motor and electrical components.

The BUG20 stands for drive ratio code, 120 means max outlet pressure 120 bar, 30 is displacement per stroke, B represents material configuration and 000 is standard seal version. Wetted parts adopt stainless steel, compatible with clean hydraulic oil, water and glycol medium. It has automatic pressure holding function, stops automatically when target pressure is reached and restarts when pressure drops. Widely used for valve hydrostatic test, accumulator charging, pipeline pressure test and offshore small pressurization system.

Working principle

Compressed air pushes large drive piston, the piston rod drives small high-pressure plunger to reciprocate.

Area difference between air piston and plunger generates pressure amplification. Check valves control liquid one-way flow to realize continuous pressurization. When outlet pressure force balances air drive force, pump stalls and keeps pressure. Once leakage causes pressure drop, the pump starts cycling again automatically.

Onboard components

Air drive piston assembly, high pressure stainless steel plunger, inlet and outlet check valves, high pressure seal set, air control shuttle valve, pump body manifold, mounting foot base.

LED indicators

No built-in indicator lamp. Pressure status is shown by matched external pressure gauge or pressure transmitter.

Hardware self‑diagnosis

The pump itself has no electronic self-check. Fault judgment depends on pressure rising speed, pressure holding performance and air consumption abnormality.

Programming software

Not applicable. Pressure setting relies on air regulator and external pressure control components.

Electrical & Process Parameters

Model:BUG20-120-30-B-000 Brand:Maximator Device type:Air Driven Plunger Liquid Pump Max outlet pressure:120 bar Displacement:30 cc per stroke Drive medium:Compressed air Liquid medium:Clean water, hydraulic oil, glycol Supply:4~8 bar compressed air Function:Liquid pressure boosting, hydrostatic pressure test and pressure holding

Mechanical & Structure

Mounting:Base foot bolt mounting Protection class:IP54 Housing:Cast aluminum drive housing + stainless steel high pressure manifold

Environmental

Operating temperature:-10℃ ~ +60℃ Storage temperature:-40℃ ~ +85℃ Ambient humidity:5~95% non‑condensing Certification:CE compliant Status:Maximator original high pressure pump spare

Installation

Fix pump on solid base and install pressure gauge, relief valve and isolation valve on high-pressure outlet pipeline.

Connect clean, filtered and lubricated compressed air supply. Fill liquid side and exhaust air before pressurization. Do not exceed rated outlet pressure. Replace plunger seals periodically according to operating frequency.

Interface

Compressed air inlet port, liquid inlet port, high-pressure liquid outlet port, drain port.

Diagnostic

Pressure cannot reach set value: Air supply insufficient, check valve stuck, seal internal leakage.

Pump cycles continuously without stop: High-pressure side leakage, seal worn.

Slow pressure rise: Air filter blocked, plunger seal aging.

Product BriefMaximator BUG20-120-30-B-000 air-driven high pressure plunger pump, 120bar max pressure, 30cc/stroke, air operated, used for hydro test and liquid pressure boosting.