Additel 938 Hydraulic High Pressure Calibration Pump0 pages

Pressure / Process Calibration Equipment

Additel 938
Hydraulic High Pressure Calibration Pump
Generate 85% vacuum to 15,000 psi (1,000 bar) pressure
Oil-free pressure instruments
Minimal maintenance
Easy-to-use
Three pressure ports
Hand-tight quick connectors
OVERVIEW
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. Three
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 938 is an ideal comparison test pump for calibrating oil-free pressure measuring
instruments such as test gauges, indicators or transducers in the laboratory.

FEATURES

SPECIFICATIONS

High Pressure
Generates pressure up to 15,000 psi (1,000 bar)
Durable and Minimal Maintenance
Patented screw press technology, without nonreturning valve inside that is usually used on
troublesome hand pumps.
Easy-to-use
With the patented screw press technology, high
pressures can be generated easily, as well as
increased and decreased smoothly
Extremely Low Leakage
Patented screw press technology replaces
troublesome check valves (non-returning valve)
in most hand pumps which practically eliminates
leakage.
Hand-tight Quick Connectors
Allows easy connecting and disconnecting to the test
pump without the need for PTFE tape or wrenches.

ORDERING INFORMATION
Model Number

Additel Datasheet 2015

ADT938
Model

N
Pressure port type:
N- 1/4NPT female
N2-1/2NPT female
B-1/4BSP female
M-M20X1.5 female

Accessories included
O-ring: 20 pcs
Manual: 1 pc

Media: Deionized water
Reservoir capacity: 420 ml (25.6 in3)
Pressure Range
85% vacuum to 15,000 psi (1,000 bar) positive
pressure.
Material
Ram/adapters: SS
Body: SS/aluminum
Seals: Buna-N
Reservoir capacity: 420 ml (25.6 in3)
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).
Warranty: 1 year
Piston volume
Low pressure piston: 30 ml (1.8 in3)
High pressure piston: 2.5 ml (0.15 in3)

Optional Accessories
Model number

Description

ADT102

Adapters and fittings, 1/4NPT male to various male and female connection
(25 pcs). More information shown on page 53.

ADT103

Adapters and fittings, 1/4NPT (1/4BSP, or M20X1.5) male to various
female hand-tight quick connectors (10 pcs). More information shown on
page 54.

9908
ADT938-MK

Phone: 714-998-6899 Fax: 714-998-6999 Email: sales@additel.com

Carrying case for 936, 937, 938 or 949.
Maintenance kit for Additel 938 pump

Corporate Headquarters

Salt Lake City Office

22865 Savi Ranch Parkway Ste F
Yorba Linda, CA 92887, USA

802 Bamberger Dr, Suite C
American Fork, UT 84003, USA