7361, 7363 Data Sheet
Contents
1. FEATURES e Maintains full pressure while running in idle for quick return to system pressure e Offers pump protection against pressure fluctuations and system changes e Minimum pressure fluctuations with the alternating use of multiple guns and nozzles e Top adjusting handle and locking nut to secure exact pressure setting e No external moving parts Stainless Steel and FPM internal parts for temperature and liquid compatibility A CAUTIONS AND WARNINGS 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 Data sheet CAUTIONS and WARNINGS can also be viewed online at www catpumps com cautions warnings or can be requested directly from CAT PUMPS WARRANTY View the Limited Warranty on line at www catpumps com warranty Pressure Regulator 7361 7363 Models SPECIFICATIONS U S Measure Metric Measure MODEL 7361 Flow Range secere 10 60 GPM 38 227 L M Pressure Range 400 1000 PSI 30 70 BAR MODEL 7362. LTD 1 Fleet Business Park Sandy Lane Church Crookham FLEET Hampshire GU52 8BF England Phone Fleet 44 1252 622031 Fax 44 1252 626655 e mail sales catpumps co uk www catpumps co uk N V Cat Pumps INTERNATIONAL S A Heiveldekens 6A B 2550 Kontich Belgium Phone 32 3 450 71 50 Fax 32 3 450 71 51 e mail cpi catpumps be www catpumps be Cat Pumps DEUTSCHLAND GmbH Buchwiese 2 D 65510 Idstein Germany Phone 49 6126 9303 0 Fax 49 6126 9303 33 e mail catpbumps t online de www catpumps de PN 993310 Rev A 01 10 4919
3. in clockwise direction 5 Squeeze the trigger and read the pressure Repeat this process until desired system pressure is attained 7 Once the desired system pressure is reached stop turning the adjusting handle and thread lock nut down towards upper body of regulator to lock in place NOTICE A minimum by pass flow of 10 of the regulator rated flow is required for proper regulator performance If the entire output is directed through the nozzles zero by pass the cushioning feature of the by pass liquid is eliminated and the regulator can malfunction or wear prematurely 8 If desired system pressure cannot be reached review TROUBLESHOOTING chart 9 When servicing existing systems back off lock nut 10 Follow adjustment procedures as stated above for new regulators Note Do not adjust regulators pressure setting to compensate for a worn nozzle Check the nozzle as part of the regular maintenance and replace if worn Note A secondary pressure relief device i e pop off valve should be used along with this pressure regulator Final adjustment for the relief valve should relieve at 200 psi above the system operating pressure f Q r Sm AN N Dy is N y D Y 4 CAPs YD BY PASS Read all CAUTIONS and WARNINGS before commencing service or operation of any high pressure system SERVICING Disassembly 1 Disconnect by pass and inlet plumbing from regulator 2 Remove reg
4. 3 Flow Range scenen 10 60 GPM 38 227 L M Pressure Range 600 1800 PSI 45 125 BAR COMMON SPECIFICATIONS Max Temperature sssssseseeeesesene 180 F 82 C Alet PON cutis saccsstecinteneienctecece 1 NPTF 1 NPTF By Pass Port nasses 1 1 4 NPTF 1 1 4 NPTF Weight isinisisi 6 2 lbs 2 8 kg Dimensions 00 9 1 x 3 43 x 2 38 231x 87x 60 45 mm Customer confidence is our greatest asset Read all CAUTIONS and WARNINGS before commencing service or operation of any high pressure system SELECTION This pressure regulator is designed for systems with single or multiple pumps solenoid gate valves nozzles standard or weep guns Note For multiple pump systems it is best to use a pressure regulator not a pressure sensitive regulating unloader This regulator should meet both the desired system flow combined nozzle flow rate requirement and the desired system pressure NOTICE Operation below the minimum flow of the regulator causes the regulator to cycle or chatter Operation above the maximum flows of the regulator causes premature regulator wear regulator cycling and prevents attaining desired system pressure INSTALLATION These regulators operate properly when mounted in any direction however it is preferred to keep the plumbing to a minimum and the adjusting cap easily accessible The best mounting location is directly on the pump discharge manifold head or in dischar
5. IST DESCRIPTION 7361 Handle Adjusting 30948 Nut Lock 30933 Adjuster Pressure 30932 Body Upper Spring 30935 Retainer Spring 34289 Guide Piston 30927 Insert Piston 30926 Ball 30936 Piston 30924 Seat 30918 Spring 30934 Body Lower Hex Washer Flat 30925 Kit O Ring 30950 Bracket Panel Mount Not Shown 30947 CUTAWAY Convenient adjusting handle with locking nut to secure desired system pressure Stainless Steel ball seat and piston offer extended life and liquid compatibility MODEL NUMBER QTY MATL 7363 MATL NY R 30948 NYR 1 S 30912 STZP R 1 S 30932 S 1 STNP STNP 1 STL R 30946 STLR 1 BB R 34289 BBR 2 BB R 30927 BBR 1 SSA R 30926 SSAR 1 SS R 30936 SSR 1 SS R 30924 SSR 1 SSA R 30918 SSAR 1 SS 30934 SS 1 SS SS 1 SS 30925 SS 1 FPM R 30950 FPM R 1 BB 30947 BB 1 Bold print part numbers are unique to a particular model talics are optional items R Components comply with RoHS Directive Material Codes Not Part of Part Number BB Brass FPM Fluorocarbon NY Nylon STNP Steel Nickel Plated S 304SS SS 316SS SSA 316SS Condition A STL Steel World Headquarters 1681 94th Lane N E Minneapolis MN 55449 4324 Phone 763 780 5440 FAX 763 780 2958 e mail techsupport catpumps com www catpumps com Cat Pumps International Inquiries E FAX 763 785 4329 e mail intlsales catpumps com L Original Instructions The Pumps with Nine Lives 5 a Cat Pumps U K
6. er hole of piston guide 10 Place first spring retainer with stepped side facing up onto piston guide 11 Install spring onto first spring retainer and then place second spring retainer on spring with stepped side facing down 12 To install the upper body onto the lower body use the hole in the upper body to fit screwdriver through to support the stacked internal parts Thread upper body onto lower body while holding parts in place with screwdriver Remove screwdriver 13 Thread in adjusting handle with screw through hole in upper body 14 Re install regulator onto pump 15 Reconnect by pass and inlet plumbing to regulator 16 Proceed to PRESSURE ADJUSTMENT D Approximate Pressure Reading at Gauge Gauge Between Pump Regulator Gauge Between Regulator Gun Nozzle Valve System in operation gun open system pressure system pressure 200 300 PSI above system pressure 200 300 PSI above system pressure System in by pass all guns valves closed 405 426 427 INLET PORT ITEM 401 403 405 406 408 410 426 427 432 435 436 438 440 445 468 490 EXPLODED VIEW 410 410 468 468 All Stainless Steel lower body and wet end parts for strength and corrosion Leaking from external weep hole is signal for immediate maintenance of worn o rings Durable FPM o rings assure greater liquid and temperature compatibility 436 resistance BY PASS PORT PARTS L
7. ge line using a T fitting Flexible high pressure hose minimum single wire braid should be at least the size of the regulator ports when plumbing to and from the regulator The inlet connection is located on the side and is a 1 NPTF sized port Plumb into this port for the discharge flow from the pump The by pass connection is located on the bottom and is a 1 1 4 NPTF sized port By pass fluid is directed out of this port and can be routed to a reservoir or to a drain OPERATION These pressure regulators maintain established system pressure in the discharge line and at the pump head when the trigger gun is closed solenoid gate valve is closed or the nozzles are clogged thus by passing all unrequired flow Squeezing the trigger gun or opening the solenoid gate valve allows for a quick return to established system pressure TYPICAL REGULATOR INSTALLATION Pressure Gauge Relief Valve Shown as a secondary relief valve Pulsation Dampener Pressure Regulator Triplex Plunger Pump PRESSURE ADJUSTMENT 1 Setting and adjusting the regulator pressure must be done with the system on 2 Start the system with regulator backed off to the lowest pressure setting counterclockwise direction 3 Squeeze the trigger and read the pressure on the gauge at the pump Note Do not read the pressure at the gun or nozzle 4 If more pressure is desired release the trigger turn adjusting handle one quarter turn
8. onnections Inlet seals in pump worn O ring in gun worn e e e e e Nozzle worn e Improper nozzle size for system specs e Foreign material trapped in seat e e e e e e e System will not build up to pressure Nozzles worn Piston and seat in regulator worn Air in system poor connections Insufficient flow to pump Filter clogged Check and clean regularly Pressure drop Pressure spikes while in by pass Minimum by pass of 10 not present Excessive pressure adjustment made for worn nozzle REPLACE NOZZLE Reset system pressure Leakage from regulator vent hole O ring around piston worn or piston retainer scored Service with o ring kit Reassembly 1 Place lower body with by pass port facing down on a flat surface 2 Lubricate outside diameter of seat Press seat into lower body with small diameter surface facing down Ensure seat lip rests squarely on lower body surface 3 Place lower body in a vise with large diameter hole facing up 4 Lubricate and install o ring onto outer diameter of piston insert and into inside diameter of piston insert Press piston insert with small diameter down into lower body 5 Install flat washer into piston insert so it rests on top of o ring Place spring on top of flat washer 7 Lubricate and install o ring then backup ring onto outside diameter of piston 8 Place piston into spring 9 Place piston guide on top of piston Insert ball into cent
9. ulator from pump 3 Secure lower body of regulator in a vise with adjusting handle facing up Remove adjusting handle and screw from upper body Remove upper body by unthreading from lower body 6 Remove first spring retainer spring and second spring retainer from lower body 7 Remove lower body from vise 8 Place lower body upside down on a flat surface with by pass port facing up Grasp lower body and gently tap against flat surface Piston guide and ball will fall out 9 Grasp lower body and gently tap against flat surface to remove piston insert piston and spring 10 Separate piston and spring from piston insert 11 Place lower body with by pass port facing up on flat surface Using a tool with the same diameter as that of the seat drive out seat NOTICE Exercise extreme caution to avoid contact and damage to the inside diameter of the piston insert lower body sealing areas and seat Exercise extreme caution to avoid contact and damage to the outside diameter of the piston insert piston and seat Note With the regulator completely disassembled inspect sealing area where the seat and piston insert makes contact within the lower body of the regulator for grooves pitting and wear If damage is found stop the repair and replace with new lower body or complete new regulator If not proceed with reassembly ore TROUBLESHOOTING Cycling Chattering Too little flow for valve specifications Air in system poor c
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