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Additel 938 Hydraulic Pressure Calibration Pump (oil-free)


Water: -12.5 psi to 15,000 psi

The 938 Hydraulic High Pressure Test Pump is specially designed for calibrating oil-free pressure measuring instruments in the range of 85% vacuum to 15,000 psi (1,000 bar). All parts used in the pump have been carefully cleaned to remove oil. The pump uses water as the media. With the patented screw press technology, high pressures can be easily generated, as well as increased and decreased smoothly. A specially designed shut-off valve makes the pressure as stable as possible during calibration. With no check valve (non-returning valve), the 938 avoids the troublesome leakage issues that is usually experienced with hand pumps and allows for minimal maintenance..



• Media: 
  Deionized water

• Pressure Range
  85% vacuum to 15,000psi (1,000bar) positive pressure.

• 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, M20X1.5 female
  Reference Gauge Connection: 1/4NPT female, 1/4BSP female, or M20X1.5 female

• Dimensions
  Height: 9.1" (230 mm) 
  Base: 20.5" (520 mm) x 14.2" (360 mm)

• Weight: 
  35.2 lb (16 kg).


For complete specs please download the product datasheet



ADT938 - N ... -SET


Note :

ADT938 - model

N - pressure port type

N = 1/4NPT female
N2 = 1/2NPT female
B = 1/4BSP female
B2 = 1/2BSP female
M = M20X1.5 female

SET - Pump and carrying case incuded

Accessories included

  • O-ring : 20 pcs
  • Manual - 1 pc
  • Carrying case (938-X-SET models only)


Model Name Description Price
ADT102 Adapters and fittings, 1/4 NPT male to various male and female connection (25 pcs) Get a Quote >>
ADT103 Adapters and fittings, 1/4NPT (1/2NPT, 1/4BSP, 1/2BSP or M20X1.5) male to various female hand-tight connector Get a Quote >>
9908 Carrying case for 936, 937, 938 or 949 Get a Quote >>
ADT938-MK Maintenance kit for Additel 938 pump Get a Quote >>



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