Air-Pressure Amplifiers

Pneumatic pressure intensifiers for raising plant-air pressure locally without a separate high-pressure compressor.

Representative packaged air-pressure amplifier with pneumatic intensifier, receiver controls and gauges — Representative configuration; final arrangement is supplier- and duty-dependent.

TECHNICAL OVERVIEW

Purpose and operating principle

An air-pressure amplifier uses compressed air as both the drive medium and the process gas to generate a higher local air pressure. It is suited to intermittent or moderate-flow duties where the existing plant-air pressure is below the receiving or actuator requirement. Amplifier selection is based on inlet pressure, required outlet pressure, consumption, receiver volume and recharge time.

How it works

Drive air acts on a larger-area piston connected to one or more compression pistons. Check valves draw in and discharge the process air as the assembly reciprocates. The amplifier slows as outlet pressure rises and stalls near its force-balance condition, then restarts when downstream demand lowers pressure. A receiver can smooth pulsation and provide short-duration peak flow.

Available configurations

Single-acting single-stage amplifier
Double-acting single-stage amplifier
Two-stage amplifier for higher pressure ratio
Amplifier with air receiver
Duplex packaged system for capacity or standby

Main components

Drive piston and cycling valve
Air compression piston or pistons
Inlet and discharge check valves
Air filter and moisture separation
Pressure regulators, gauges and isolation valves
Receiver and safety relief valve where required
Automatic controls and low/high-pressure switches
Frame, guards and silencing

Typical upstream applications

Local plant-air pressure amplification
Pneumatic valve and actuator supply
Emergency engine-start receiver charging
Fire-pump or generator starting-air support
Pneumatic pressure testing only where an approved risk-controlled procedure permits it
Higher-pressure instrument-air duty where approved

SELECTION DATA

Configuration and supply basis

Inlet air	Minimum/normal/maximum pressure, temperature and quality
Outlet duty	Required pressure, continuous flow and peak demand
Storage	Receiver volume, allowable pressure band and recharge time
Configuration	Single acting, double acting, two stage or duplex
Air quality	Filtration, drying and oil-free requirements
Environment	Ambient conditions, hazardous area, noise and ventilation
Controls	Automatic start/stop, pressure switches and alarm interfaces
Safety	Receiver code, relief protection and isolation provisions
Verification	Leak, functional and package performance testing

Technical validation

Energy Equipment International supplies equipment against the approved enquiry. These descriptions explain the family and selection logic; they are not fixed GRD manufacturing specifications. Pressure, flow, materials, hazardous-area suitability and certification must be confirmed in the selected supplier’s approved documents. Pneumatic testing and compressed-gas service require a project-specific safety review and approved procedure.