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FEATURES

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Provides system pressure setting and protection for 
single gun (non-weep) and pump installation.

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Compact size with optional ports for easy 
installation.

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Pressure sensitive feature permits wide range of 
flows and immediate pressure when gun opens.

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Color coded spring for easy identification and 
simple change from one model to another.

SPECIFICATIONS

 

U.S. Measure 

Metric Measure

MODEL 

7693

Flow Range .............................................. 2.5-10.5 gpm 

(9.5-40 lpm)

Pressure Range ........................................ 230-2300 psi 

(16-160 bar)

Weight ..................................................................1.56 lbs. 

(0.71 kg)

Dimensions ..................................... 7.51 x 3.25 x 1.97”  (190.7 x 82.5 x 50.0 mm)

MODEL 

7694

Flow Range .............................................. 2.5-10.5 gpm 

(9.5-40 lpm)

Pressure Range ........................................ 400-4050 psi 

(28-280 bar)

Weight ..................................................................1.63 lbs. 

(0.74 kg)

Dimensions ..................................... 7.51 x 3.25 x 1.97”  (190.7 x 82.5 x 50.0 mm)

COMMON SPECIFICATIONS
Maximum Operating Temperatures:
Standard Buna o-rings .........................................140°F (60°C)
Standard Buna o-rings (Intermittent) ............195°F (90°C)
Optional FPM o-rings ...........................................240°F (116°C)
Inlet Ports (2) ..................................................3/8” NPTF 

(3/8” NPTF)

Discharge Port (1) .........................................3/8” NPTF 

(3/8” NPTF)

By-Pass Port (2) ..............................................3/8” NPTF 

(3/8” NPTF)

Unloader is stamped with a European safety pressure. Use only at above 
specifications to assure proper unloader life and performance.

For Relief Valve version add .100 to unloader model number.

For FPM o-ring version add .0110 to unloader model number.

Pressure Sensitive

Regulating Unloader

Models

 

 

7693

 

7694

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. 

Model 7693 Shown

Summary of Contents for 7693

Page 1: ... 3 8 NPTF Discharge Port 1 3 8 NPTF 3 8 NPTF By Pass Port 2 3 8 NPTF 3 8 NPTF Unloader is stamped with a European safety pressure Use only at above specifications to assure proper unloader life and performance For Relief Valve version add 100 to unloader model number For FPM o ring version add 0110 to unloader model number Pressure Sensitive Regulating Unloader Models 7693 7694 All High Pressure S...

Page 2: ...p inlet OPERATION These pressure sensitive regulating unloaders hold established system pressure in the discharge line when the trigger gun is closed or solenoid gate valve is closed or the nozzle is clogged thus by passing all unrequired flow Squeezing the trigger gun or opening the solenoid gate valve will close the by pass and return to established system pressure PRESSURE ADJUSTMENT 1 Setting ...

Page 3: ...piston stem tip end Lubricate and install o ring and then back up ring onto threaded end of piston stem 4 Grasp threaded end of piston stem and press by hand into unloader body 5 Lubricate and install larger o ring over threads of piston retainer body Slide piston retainer with threads facing downwards over piston stem and thread into body 6 Apply Loctite 242 to the last few threads of the piston ...

Page 4: ...PM O Ring Piston Stem 1 425 76747 S Retainer Piston 1 428 in kit NBR O Ring Piston Retainer 1 in kit FPM O Ring Piston Retainer 1 429 in kit NBR O Ring Piston Stem 1 in kit FPM O Ring Piston Stem 1 430 30423 PTFE Ring Seal 1 434 32325 S Spring 1 436 76743 Seat Ball Assembly 1 440 BB Housing 1 ITEM PN MATL DESCRIPTION QTY 441 in kit NBR O Ring Check Valve 1 in kit FPM O Ring Check Valve 1 442 in ki...

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