Additel Instruments Low Pressure Test Pump 901B Series

Additel Low-Pressure Test-Pump 901B are dedicated to designing, manufacturing, and delivering the highest quality handheld test tools and portable calibrators for process and calibration industries.

For many years Additel has successfully developed automated pressure calibrators, digital pressure test gauges, digital pressure calibrators, pressure test and calibration pumps, and multifunction process calibrators.

In recent years, we have expanded our product offering with temperature readouts, scanners, and calibrators that are helping to make metrology simple.

Coupled with our ISO17025 accredited calibration laboratory in Brea, CA, our products, calibration services, and customer support are second to none. Additel products are currently used in over 100 countries worldwide, with a worldwide sales and support channel in place to assist you.

Product quality and customer service along with innovative engineering have been our top priorities and will continue to be our guiding principles going forward.

Low-Pressure Test Pump Additel 901B Series

Whether you regularly perform pneumatic (air) pressure adjustments or hydraulic (oil and water) pressure modifications, you can rely on our handheld and hand-operated pressure pumps.

We optimize our pneumatic pumps for ambient temperature resistance, pressure consistency, and stability in producing compatible pressures. Instead of using check valves, our handheld pressure pumps use isothermal bellows chambers. This mechanism maintains temperature consistency, which improves pressure integrity.

Low-Pressure Test Pump Additel 901B Series utilizes patented screw press functionality to achieve high levels of pressure without strenuous manual effort. Our high-end hydraulic pumps are capable of generating pressure up to 60,000 psi.

The Low-Pressure Test Pump Additel 901B Series is a hand-operated pressure pump designed to generate pressures from -6 psi (-0.4 bar) to 6 psi (0.4 bar). A high-quality screw press is designed for fine pressure adjustment, with an adjustment resolution up to 0.1 Pa (0.001 mbar).

The Low-Pressure Test Pump Additel 901B Series is a very stable low pressure calibrator. It makes use of an isothermal bellows chamber which is designed for reducing the possible effects of environmental temperature change.

Most pumps make use of a check valve (non-returning valve) and are not well insulated which will cause large fluctuations in pressure with a change in ambient temperature or when the unit is touched. The Low-Pressure Test Pump Additel 901B Series does not use a check valve and is remarkably stable.

Two hand-tight connectors installed on the pump allow easy connecting and disconnecting to the test pump without the need for PTFE tape or wrenches. The Low-Pressure Test Pump Additel 901B Series is an ideal comparison test pump for low-pressure applications.

Additel Low-Pressure Test-Pump 901B Features

  • Portable, only 3.5 lb
  • Great stability and high resolution
  • Minimal maintenance
  • Hand-tight quick connectors

Another Article:


  • Media:
    • Air.
  • Generated Pressure Range:
    • 6 psi (0.4 bar) vacuum to 6 psi (0.4 bar) positive pressure.
  • Adjustment Resolution:
    • 0.1 Pa (0.001 mbar).
  • Material:
    • Ram/adapters: SS
    • Body: SS/aluminum
    • Seals: Buna-N
  • Connection:
    • Hand-tight connectors for both test gauge and reference gauge.
    • Test Gauge Connection: 1/4NPT female, 1/4BSP female, or M20X1.5 female
    • Reference Gauge Connection: 1/4NPT female, 1/4BSP female, or M20X1.5 female
  • Dimensions:
    • Height: 5.7” (145mm)
    • Base: 9.65” (245 mm) x 6.50” (165mm)
  • Weight:
    • 3.5 lb (1.6 kg).
  • Warranty:
    • 1 year.

Download Data Sheet: Low Pressure Test Pump Additel 901B Series


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