Savanoriu 65A, Vilnius, Lithuania +370 (5) 210 22 74
The 901 Low Pressure Test Pump 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 901 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 901 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 901 is an ideal comparison test pump for low pressure applications.

• Portable
Only 3.5 lb (1.6 kg)

• Adjustment Resolution
0.1 Pa (0.001 mbar)
Specially designed screw press for fine pressure adjustment.

• Great Stability
Isothermal chamber: the pressure chamber is insulated to reduce the influence from environmental temperature changes
Specially designed bellows minimize leakage to guarantee excellent stability

• Durable and Minimal Maintenance
Without non-returning valve that is usually used on troublesome hand pump.

• Easy-to-use
Pressure could be set and adjusted precisely and quickly through a simple turn of the handle.

• Hand-tight Quick Connectors
Allows easy connecting and disconnecting to the test pump without the need for PTFE tape or wrenches.

The Additel 901 is designed for low pressure application requiring accurate low pressure testing and calibration. It can be used in calibrating low pressure gauges, transmitters, or other pressure measuring instruments.

• Media:

• 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" (145 mm);
Base: 9.65" (245 mm) x 6.50" (165 mm).

• Weight:
3.5 lb (1.6 kg).

• Warranty:
1 year

Buy: Additel 901 - low pressure pump, price: ---- euro
If you have any questions about this product feel free to contact with us by email: This email address is being protected from spambots. You need JavaScript enabled to view it. OR phone: +370 (5) 210 22 74.

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JSC "Tek Know Baltic" Lithuania, Vilnius, Savanoriu ave 65A, LT03149

Tel: +370 (5) 210 22 74, Fax: +370 (5) 210 22 75, Email:

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