Product Manual

444
443
438
439
403
469
460
446
Inlet
Discharge
428
429
423
424
437
402
408
410
425
414
415
412
426
435
436
470
Repair
Kit
418
Complete Piston
Assembly
471
Check Valve
Kit
PARTS LIST
ITEM
PN
MATL
DESCRIPTION
QTY
402
547798
BB
Cap, Adjusting
1
403
45070
BB
Nut, Lock (M18 x 1)
1
408
32094
STZP R
Spring, Pressure 1
410
549352
STCP R
Retainer, Spring
1
412
45694
S
Stem, Piston
1
414
20184
PTFE
Back up Ring, Piston Stem
1
415
14190
NBR
O Ring, Piston Stem 70D 1
418
BB
Assy, Piston Included In Repair Kit
1
423
46249
BB
Retainer, Valve
1
424
13966
NBR
O Ring, Valve Retainer (Outer) 70D
1
425
547799
BB
Retainer, Piston
1
426
46250
S
Washer
1
428
26133
NBR
O Ring, Piston Retainer 80D
1
429
17399
NBR
O Ring, Valve Retainer (Inner) 80D
1
435
547800
S
Valve
1
436
49664
S
Seat
1
437
13963
NBR
O Ring, Seat 70D
1
438
46254
NY
Seat, Check Valve
1
439
13963
NBR
O Ring, Check Valve Seat 70D
1
443
49765
D
Valve, Check
1
444
45924
S
Spring
1
446
26133
NBR
O Ring, Body 80D
1
460 107681
BB
Fitting, Discharge (3/8” NPTM)
1
468
31767
NBR
Kit, O Ring
(Inclds:414,415,424,428,429,437,439,446)
1
469
7332
BB
Injector, Chemical Fixed
1
470
76179
NBR
Kit, Repair
(
Incl
ds:412,414,415,423,424,425,426,428,429,435,436,437)
1
471
76146
NBR
Kit, Check Valve
(
Incl
ds:438,439,443,444,446)
1
Italics are optional items.
R Components comply with RoHS Directive.
MATERIAL CODES (Not Part of Part Number):
BB=Brass
D=Acetal
NBR=Medium Nitrile (Buna N)
NY=Nylon
PTFE=Pure Polytetrafluoroethylene
S=304SS
STCP=Steel/Chrome Plated
STZP=Steel/Zinc Plated
UNLOADER TYPE
An integral unloader with built-in by-pass is part of the discharge
manifold to provide system pressure regulation and pump protec-
tion. This pump also includes a fixed chemical injector for chemical
application.
OPERATION:
Pump should be purged of air before commencing operation.
Liquid must flow through the pump without discharge restriction
to assure full system pressure is reached.
Install a pressure gauge close to the manifold head of the pump
to assist in setting system pressure and to periodically monitor
system pressure.
Setting and adjusting the regulator pressure must be done with
the system turned on. Start the system with the unloader backed
off to the lowest pressure setting (counterclockwise direction).
Squeeze the trigger and read the pressure on the gauge at the
pump. Do not read pressure at the gun or nozzle. If more pres-
sure is desired, turn adjusting cap one quarter turn in a clockwise
direction. Squeeze the trigger and read the pressure. Repeat this
process until the desired system pressure is reached. Thread lock-
ing nut up to adjusting cap.
NOTE: Pressure is not set at the factory.
SERVICE:
The unloader should be serviced on the same schedule as the seals
in the pump. Refer to the Service Manual for start-up, servicing of
seals and valves, torque requirements and diagnosis and mainte-
nance chart.
INTEGRAL UNLOADER
SPECIFICATIONS
U.S. Measure
Metric Measure
Flow
..................................................................................
3.0 gpm
(11.4 lpm)
PSI Range
...............................................................
100 3300 psi
(7 228 bar)
Inlet Port
....................................................................
3/8” NPTF
(3/8” NPTF)
Discharge Port w/Chemical Injector
..............
3/8” NPTM
(3/8” NPTM)
7332 FIXED CHEMICAL INJECTOR
SPECIFICATIONS
U.S. Measure
Metric Measure
Flow
..................................................................................
3.0 gpm
(11.4 lpm)
Nozzle Orifice
.................................................................
2.1 mm
(2.1 mm)
Hose Barb
...............................................................................
1/4”
(1/4”)
Inlet Port
.....................................................................
M18 x 1.0
(M18 x 1.0)
Discharge Port
........................................................
3/8” NPTM
(3/8” NPTM)
Weight
...............................................................................
5.3 oz.
(0.15kg)
Dimensions
...........................................................
2 x 1 x 1.75”
(52 x 25 x 45 mm)
CHEMICAL INJECTOR PERFORMANCE CHART
Orifice
Size
Maximum
Injecting
Pressure
Maximum
Chemical
Draw
Pressure Drop Across
Injector At System
Pressure (2850 psi)
2.1 mm 250 psi 37.2 oz/min 141 psi
Optimum performance of chemical injector occurs with 35 ft. high pressure
hose and a minimum 3/8” I.D. The type of hose , extended lenghts, reduced
I.D. and fittings may create back pressure in excess of the low pressure
nozzle rating and prevent the injector from drawing chemical. See hose
friction loss Chart in Service Manual. Deduct hose friction loss from above
low psi nozzle. Contact Cat Pumps for assistance with other options.
CAUTION: Deduct the pressure drop shown in the performance chart from
your desired system pressure to arrive at the maximum high pressure nozzle
rating. This is essential to avoid over-pressurizing the pump.