CAT Pumps 3DX25GSI Manual

Gas engine must be purchased separately.

PUMP FEATURES

•
Triplex plunger design provides a smooth liquid flow.
•
Specially formulated Hi-Pressure Seals and concentric solid
ceramic plungers assure true wear surface and extended seal
life.
•
Ultra-compact, hollow-shafted pump for direct mounting to
gas engine.
•
Integral Regulating Unloader with built-in by-pass standard on
all units to assure system pressure control and pump protec-
tion.
•
Fixed chemical injector standard on all units offers cleaning
flexibility.
•
Stacked valve design for ease in servicing.
•
Swivel garden hose fitting with filter screen for easy inlet
connection.

COMMON PUMP SPECIFICATIONS

Inlet Pressure Range .......................Flooded to 60 PSI
Bore . .................................................................. 0.630"
Max. Liquid Temperature ................................... 140° F
Above 130°F call CAT PUMPS for inlet conditions and elastomer recommendations.
Crankcase Capacity .......................................... 8.5 oz.
Inlet Port (1) ...................................................3/4" GHF
Discharge Port (1) . ..........................................M18x1.0
Chemical Discharge Port (1) ...................... 3/8" NPTM
Chemical Injection Barb ..............................8/32" UNF
Shaft Diameter ...................................................... 3/4"
Weight ............................................................ 10.7 lbs.
Dimensions . .....................................7.99 x 7.75 x 6.29" (203 x 197 x 160 mm)
All High Pressure Systems require a primary pressure regulating device (i.e. regulator, unloader)
and a secondary pressure relief device (i.e. pop-off valve, relief valve). Failure to install such relief
devices could result in personal injury or damage to pump or property. CAT PUMPS does not
assume any liability or responsibility for the operation of a customer's high pressure system.
Read all CAUTIONS and WARNINGS before commencing service or operation of any high
pressure system. The CAUTIONS and WARNINGS are included in each service manual and with
each Accessory Data sheet. CAUTIONS and WARNINGS can also be viewed online at
www.catpumps.com/cautions-warnings or can be requested directly from CAT PUMPS.
(Flooded to 4 Bar)
(16 mm)
(60°C)
(0.25 L)
(3/4" GHF)
(M18x1.0)
(3/8" NPTM)
(8/32" UNF)
(19.0 mm)
(4.9 kg)
"Customer confidence is our greatest asset"
Direct-Drive
Plunger Pump
Models
3DX25GSI
3DX27GSI
3DX29GSI
3DX30GSI
SPECIFICATIONS
3DX25GSI
MODEL
Flow . .......................................................... 2.5 GPM
Max. Discharge Pressure ..........................2500 PSI
Max. RPM . ...............................................3450 RPM
Stroke ............................................................ 0.204"
3DX27GSI
MODEL
Flow . .......................................................... 2.7 GPM
Max. Discharge Pressure ..........................2500 PSI
Max. RPM . ...............................................3450 RPM
Stroke ............................................................ 0.220"
3DX29GSI
MODEL
Flow . .......................................................... 2.9 GPM
Max. Discharge Pressure ..........................2500 PSI
Max. RPM . ...............................................3450 RPM
Stroke ............................................................ 0.232"
3DX30GSI
MODEL
Flow . .......................................................... 3.0 GPM
Max. Discharge Pressure ..........................2500 PSI
Max. RPM . ...............................................3450 RPM
Stroke ............................................................ 0.244"

ELECTRIC HORSEPOWER REQUIREMENTS

MODEL FLOW
PSI
1000
U.S. BAR
GPM L/M 70
3DX25GSI 2.5 9.5 1.7
3DX27GSI 2.7 10.2 1.8
3DX29GSI 2.9 10.9 1.9
3DX30GSI 3.0 11.4 2.1
DETERMINING Rated G.P.M.
THE PUMP R.P.M. Rated R.P.M.
DETERMINING
THE REQUIRED H.P.
DETERMINING Motor Pulley O.D.
MOTOR PULLEY SIZE
Note: Consult engine manufacturer when using gas or diesel engine.
Refer to pump Service Manual for repair procedure and additional technical information.
Non-Production
Non-Production
See Current Data Sheet
See Current Data Sheet
U.S. Measure Metric Measure
(3450 RPM)
(3450 RPM)
(3450 RPM)
(3450 RPM)
PRESSURE
PSI PSI PSI PSI
1200 1500 2000 2500
BAR BAR BAR BAR
85 105 140 175
2.0 2.6 3.4 4.3
2.2 2.8 3.7 4.6
2.4 3.0 4.0 5.0
2.5 3.1 4.1 5.2
= "Desired" G.P.M.
"Desired" R.P.M.
GPM x PSI = Electric Brake
1460 H. P. Required
= Pump Pulley O.D.
Pump R.P.M. Motor R.P.M.
(9.5 L/M)
(175 BAR)
(5.2 mm)
(10.2 L/M)
(175 BAR)
(5.6 mm)
(10.9 L/M)
(175 BAR)
(5.9 mm)
(11.4 L/M)
(175 BAR)
(6.2 mm)
RPM
3450
3450
3450
3450