Pressure / Process Calibration Equipment
Corporate Headquarters
2900 Saturn St #B
Brea, CA 92821, USA
Salt Lake City Office
1364 West State Rd. Suite 101
Pleasant Grove, UT 84062, USA
Phone: 714-998-6899 Fax: 714-998-6999 Email:
Rev # 20240123
Media: Mineral oil, deionized water.
Oil is default media. Pumps designed for water media ordered
as 928W. Pumps with Skydrol Oil (phosphoric acid ester) as
media ordered as 928AC.
Generated Pressure Range
0 to 15,000 psi (1,000 bar) gauge pressure
Ram/adapters: 304 SS Body: 304 SS
Seals: Buna-N, PTFE, Copper Alloy Reservoir: UPVC
Hand-tight connectors for both test gauge and reference gauge.
1/4NPT female, 1/2NPT female, 1/4BSP female, 1/2BSP
female, or M20X1.5 female
Dimensions: Height: 6.38'' (162 mm)
Base: 13.58'' (345 mm) x 8.46'' (215 mm)
Weight: 9.5 lbs (4.3 kg)
Piston Volume: Fine adjust piston: 0.9 ml (0.05 in
Volume Per Stroke: 3.72 ml
Reservoir Volume: 150 ml (9.15 in
Warranty: 1 year
Hydraulic Pressure Test Pump
Additel 928A
The Additel 928A Hydraulic Pressure Test Pump is a hand operated pressure pump designed to generate pressure
to 15,000 psi (1,000 bar). This pump incorporates a dual-piston system which is ideal for lling large volume workload
with the hand pump and providing smooth increase and decrease of pressure with the ne adjustment. The 928A 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. 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 928A is an ideal comparison test pump for calibrating pressure measuring instruments such as test gauges,
indicators or transducers in the eld or laboratory.
Hand pump to fill large volume systems
Portable at 9.5 lbs (4.3 kg)
Durable and minimal maintenance
Isolation valve provides stable pressures while
reducing maintenance on the hand pump
check valve
Easy to use
15,000 psi (1,000 bar) can be generated easily
with the dual-piston system
Hand-tight quick connectors
Allows easy connection and disconnection to
the test pump without the need for PTFE tape
or wrenches
Optional Accessories
Model number Description
9201 Oil, Diethylhexyl Sebacate, 1 liter (1 quart)
9202 Oil, Mineral oil, 1 liter (1 quart)
Adapters and ttings, 1/4NPT male to various male and female connection
(25 pcs). More information shown on page 83.
Adapters and ttings, 1/4NPT (1/2NPT, 1/4BSP, 1/2BSP, or M20X1.5) male
to various female hand-tight quick connectors (10 pcs). More information
shown on page 84.
Hose test kit, 5 feet flexible hose, 15,000 psi, 1/4NPT male to 1/4NPT
(1/8NPT, 1/2NPT, 1/4BSP, 1/2BSP, or M20X1.5) female hand-tight quick
9904-928 Carrying Case for one 928A pump and two pressure test gauges
ADT928A-MK Maintenance kit for Additel 928A pump
ADT100-928A-HK Hose Kit, External Reservoir Expansion Hose Kit for ADT928A
Pressurize large-volume workload
Generate to 15,000 psi (1,000 bar) pressure
Impoved Anti-Corrosion Performance
Portable only 9.5 lbs (4.3 kg)
Increase and decrease pressure smoothly
Hand-tight quick connectors
Accessories included
Mineral oil,1 bottle (250 ml)*
* When water media is not requested
O-ring: 20 pcs
Carrying case (928A-X-SET models only)
Model Number
Pressure port type:
N -
NPT female
N2 - 1/2NPT female
B - 1/4BSP female
B2 - 1/2BSP female
M - M20X1.5 female
SET: Pump and
carrying case