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Additel 959 Hydraulic Ultra-High Pressure Test Pump


Oil: 0 psi to 40,000 psi

The new 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. The 959 test pump incorporates an isolation valve which isolates the calibration volume from the check valve associated with the hand pump. Because the check valve can often be a source of leaks and maintenance, the isolation valve provides more stable measurements and reduces potential maintenance of the pump. The Additel 959 is an ideal comparison test pump for calibrating pressure measuring instruments such as test gauges, indicators or transducers. .



• Media:

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

• Reservoir capacity:
420ml (25.6 in^3)

• Material
Ram/adapters: SS
Body: SS, aluminum, copper
Seals: Buna-N, PTFE, Copper Alloy, Aluminum Alloy

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

• Dimensions:
Height: 6.9" (175 mm)
Base: 17.9" (455 mm) x 15.0" (380 mm)

• Weight:
28.7 lb (13 kg).

• Piston volume:
Fine adjust piston: 1.5 ml (0.09 in^3)


For complete specs please download the product datasheet



ADT959 - AF .. SET

Note :

ADT949 - model

AF - pressure port type

AF = Autoclave F-250-C female
B2 = 1/2BSP female
X = customize
M = M20X1.5 female

SET - Pump and carrying case included

Accessories included

  • Diethylhexyl Sebacate - 1 bottle (250 ml)
  • Manual - 1 pc
  • Carrying case (959-X-SET models only)



Model Name Description Price
9202 Oil, Mineral Oil, 1 liter Get a Quote
ADT104 Adapters and fittings, 1/4HP male to various male and female connectors (17 pcs) Get a Quote
ADT959-MK Maintenance kit for Additel 959 pump Get a Quote
ADT100-959-HK Hose kit, external reservoir expansion hose kit or Additel 959 pump Get a Quote
9910 Carrying case for Additel 946 or Additel 959 Get a Quote

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