ADT959 Handheld Hydraulic Pressure Test Pump

ADT959 Hydraulic Pressure Calibration Test Pump by AdditelOil: 0psi to 40,000psi

The Additel 959 Hydraulic Pressure Test Pump is a benchtop pressure pump designed to generate pressure to 40,000 psi (2,800 bar). This pump incorporates a dual-piston system which is ideal for filling large volume workload with the hand pump and providing smooth increase and decrease of pressure with the high pressure, fine adjust screw press.

    Pressurize large-volume workload
    Generate pressure to 40,000 psi (2,800 bar)
    Increase and decrease pressure smoothly
    Three pressure ports
With the patented screw press technology, high pressures can be easily generated, as well as increased and decreased smoothly. With no check valve (non-returning valve), Additel's Hydraulic Pressure Test Pumps avoid the troublesome leakage issues that is usually experienced with most hand pumps and allows for minimal maintenance. Two hand-tight quick connectors installed on the pump allow easy connecting and disconnecting to the test pump without the need for PTFE tape or wrenches. The Additel Hydraulic Pressure Test Pumps are an ideal comparison test pump for calibrating pressure measuring instruments such as test gauges, indicators or transducers in the field or laboratory.

Ordering Info

Generate Ultra-high Pressure
Generate pressure up to 40,000 psi (2,800 bar)
Durable and Minimal Maintenance
Patented screw press technology, without non-returning valve inside that is usually used on   troublesome hand pumps. 
Hand pump to fill large volume systems 
With the patented screw press technology, high pressures can be generated easily, as well as increased and decreased smoothly.



Pressure Range
0 to 40,000psi (2,800bar) gauge pressure

Rame/adapters: SS
Body: SS, aluminum, copper
Seals: Buna-N, PTFE, copper alloy, aluminium alloy
Reservoir Capacity: 420ml

Test Gauge Connection: Autoclave F-250-C, 9/16" - 18 UNF female 1/2BSP female and M20X1.5 female connections are available upon request

Height: 175 mm
Base: 455 mm x 380 mm

Weight: 13 kg

Warranty:  1 year

Piston volume
Fine adjust piston: 1.5 ml 


 ADT959 Order Information website

Accessories Included

Description Qty
Diethylhexyl Sebacate Oil 250ml*
Manual 1 pc
Carry Case (959-X-SET models only) 1 pc

* For when water media is not requested

Optional Accessories ADT

Model Number Description
9201 Oil, Diethylhexyl Sebacate 1L
ADT104 Adapters & fittings, 1/4NPT male to female connectors (17pcs)
ADT959-MK Maintenance kit for ADT959 pump
ADT100-959-HK Hose kit, External Reservoir Expansion Hose Kit for ADT959
9908 Carrying case for one ADT936, ADT937, ADT938 or ADT949

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