Additel ADT 959A Hydraulic 40000 PSIG Ultra-High Pressure Test Pump


Key Features:

  • Generate Ultra-high Pressure
    Generate pressure up to 40,000 psi (2,800 bar)
  • Hand pump to fill large volume systems
  • Durable and Minimal Maintenance
    Isolation valve provides stable pressures while reducing maintenance on the hand pump check valve
  • Easy-to-use
    40,000 psi (2,800 bar) can be generated easily with the dual-piston system
Product Options:

Secured and trusted checkout with

The Additel ADT 959A is constructed to produce pressure to 40,000 PSIG (2,800 bar), the benchtop pressure pump is equipped with a dual-piston system. The dual-piston system is perfect for filling large volume workload with the hand pump and delivering an even increase and decrease of pressure with the high pressure, find adjust screw press.


As check valves are often the basis of leaks and maintenance, the ADT 959A encompasses an isolation valve. The isolation valve works by isolating the calibration volume from the check valve associated with the hand pump. As a result, measurements are more stable and the incidence of leaks and need for overall maintenance is greatly reduced. The ADT 959A Pressure Test Pump from Additel is an essential asset for any application involving the calibration of pressure measuring instruments.


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

Reservoir capacity: 
  420ml (25.6 in^3)

  Ram/adapters:  SS

  Body: SS, aluminum, copper
  Seals: Buna-N, PTFE, Copper Alloy, Aluminum Alloy

  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.

  Height: 6.9" (175 mm) 

  Base: 17.9" (455 mm) x 15.0" (380 mm)

  28.7 lb (13 kg).  

  1 year

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

Write Your Own Review
Only registered users can write reviews. Please Sign in or create an account
The Additel ADT 959A is designed to generate pressure up to 40,000 psi (2,800 bar) for the application requiring accurate pressure testing and calibration. It can be used in calibrating pressure gauges, transmitters, or other pressure measuring instruments.