User's Manual

ManualsBrandsGraco ManualsDo-It-Yourself tools308325E

For Use In Low-Pressure Systems Only

Fluid Flow up to 0.5 gpm (1.9 lpm)

Read warnings and instructions.

Spring-Operated Regulators

100 psi (0.7 MPa, 7 bar) Maximum Inlet Pressure

3 to 30 psi (.02 to 0.2 MPa, 0.2 to 2.1 bar)

Regulated Pressure Range

Model 236081, Series A

with no pressure gauge

Model 236449, Series A

with stainless steel pressure gauge

30 psi (0.2 MPa, 2.1 bar) gauge

Model 241976, Series A

with stainless steel pressure gauge

60 psi (0.4 MPa, 4.1 bar) gauge

_____________________________________

100 psi (0.7 MPa, 7 bar) Maximum Inlet Pressure

20 to 100 psi (.14 to 0.7 MPa, 1.4 to 7 bar)

Regulated Pressure Range

Model 236216, Series A

with no pressure gauge

Model 236450, Series A

with stainless steel gauge

100 psi (0.7 MPa, 7 bar) gauge

Air-Operated Regulators

100 psi (0.7 MPa, 7 bar) Maximum Inlet Pressure

3 to 100 psi (.02 to 0.7 MPa, 0.2 to 7 bar)

Regulated Pressure Range

Model 238159, Series A

with no pressure gauge

Model 236281, Series A

with stainless steel gauge

100 psi (0.7 MPa, 7 bar) gauge

Instructions

GRACO INC.ąP.O. BOX 1441ąMINNEAPOLIS, MNą55440-1441

Fluid Pressure Regulators

308325E

02725

CAUTION

The fluid supply system main line pressures

often exceed the pressure range of the gauge

supplied with regulator 236449. Exposing this

gauge to excessive pressure can damage the

gauge, causing inaccurate readings, and the

needle will not return to zero. Such damage is

not covered by the Graco warranty.

ACETAL MATERIAL, WATERBASE COMPATIBLE

Parts

Summary of content (20 pages)

PAGE 1
Instructions Parts ACETAL MATERIAL, WATERBASE COMPATIBLE Fluid Pressure Regulators 308325E For Use In Low-Pressure Systems Only Fluid Flow up to 0.5 gpm (1.9 lpm) Read warnings and instructions. Spring-Operated Regulators 100 psi (0.7 MPa, 7 bar) Maximum Inlet Pressure 3 to 30 psi (.02 to 0.2 MPa, 0.2 to 2.1 bar) Regulated Pressure Range Model 236081, Series A with no pressure gauge Model 236449, Series A with stainless steel pressure gauge 30 psi (0.2 MPa, 2.
PAGE 2
Table of Contents Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAGE 3
WARNING INJECTION HAZARD Spray from the gun, leaks, or ruptured components can inject fluid into your body and cause extremely serious injury, including the need for amputation. Fluid splashed in the eyes or on the skin can also cause serious injury. D Fluid injected into the skin might look like just a cut, but it is a serious injury. Get immediate medical attention. D Do not point the gun at anyone or at any part of the body. D Do not put your hand or fingers over the spray gun tip or extruder gun tip.
PAGE 4
Installation Introduction Pressure Relief Procedure Fluid pressure regulators are used for accurate, positive control of the fluid pressure to spray guns, dispensing valves or atomizing heads. Regulators installed at circulating line take-offs or pumps are used to reduce main line pressure and maintain the desired fluid pressure to the spray gun or atomizing head.
PAGE 5
Installation Spring-Operated Regulator Installation Models 236081, 236216 (without gauge) 236449, 236450, 241976 (with gauge) A KEY A Fluid supply B Inlet ball valve C Outlet ball valve 1 D Air filter and regulator E Back pressure valve F Fluid return B G Air supply 1 Regulator adjustment handle C G D E F 02726 Fig.
PAGE 6
Operation Air Operated Regulators CAUTION D The new system must be cleaned and tested thoroughly before admitting fluid to the regulator to avoid contaminants clogging or damaging the regulator. D Always use the lowest possible air and fluid pressures for your application. High pressures can cause premature spray tip, regulator, and pump wear. NOTE: Reference numbers and letters in parentheses in the text refer to Figs.1 through 5 and the Parts Drawings. 1.
PAGE 7
Notes 308325 7
PAGE 8
Service Air Operated Regulator Disassembly Reassembly 1. Shut off the pump. Close the ball valve at the regulator’s air inlet. Refer to Fig. 2, page 5. 1. Place the spring (17*) into the housing (20), then the ball (16*) on top of the spring. 2. Release all the air and fluid pressure in the regulator and disconnect the air and fluid lines. CAUTION 3. Remove the regulator from the system. Remove the eight hex head screws (18) and nuts (19) from the regulator cap (5) and the housing (20). See Fig. 4.
PAGE 9
Service Model shown: 236281 4 2 J 9 4 2 5 10 3 18, 19 11* 6* 12* 13 15* 1 20 14* 16* 17* 02730 1 Torque to 37–43 in–lbs (4.1–4.8 N.m). 2 Torque to 28–32 ft–lbs (38–43 N.m). 3 4 Torque screws evenly to 60 in–lb (6.8 N.m), three times, consecutively, to compensate for diaphragm relaxation. Follow the torque sequence shown below. Torque to 140–160 in–lbs (16–18 N.m). 3 5 7 1 Top View 2 8 6 4 02727 Fig.
PAGE 10
Service Spring Operated Regulators Disassembly Reassembly 1. Shut off the pump. Close the ball valve at the regulator’s fluid inlet. Refer to Fig. 1, page 5. 1. Place the spring (17*) into the housing (20), then the ball (16*) on top of the spring. 2. Release all fluid pressure in the regulator and disconnect the fluid line. Remove the regulator from the system. 3. Turn the adjustment handle (1) counterclockwise until the spring force is relieved (Fig. 3). 4.
PAGE 11
Service Model 236081 shown 1 5 7 4 8 9 3 2 18, 19 10 11* 13 12* 15* 14* 1 *6 16* 20 17* 1 Torque to 37–43 in–lbs (4.1–4.8 N.m). 2 Torque to 28–32 ft–lb (38–43 N.m). 3 Torque screws evenly to 60 in–lb (6.8 N.m), three times, consecutively, to compensate for diaphragm relaxation. Follow the torque sequence shown below. 3 02732 5 7 1 Top View 2 8 6 4 02766 Fig.
PAGE 12
Troubleshooting NOTE: Check all possible remedies in the Troubleshooting Chart before disassembling the fluid regulator. Problem No pressure regulation. Fluid leaks from between the cap (5) and the housing (20). Pressure creeps above setting. Pressure drops below setting. 12 308325 WARNING To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 4.
PAGE 13
Parts Spring-Operated Regulators 3 to 30 psi (.02 to 0.2 MPa, 0.2 to 2.1 bar) Regulated Pressure Range Model 236081, Series A, includes items 1 to 20 (no gauge) Model 236449, Series A, includes items 1 to 20, and 30 (30 psi gauge) Model 241976, Series A, includes items 1 to 20, and 28 (60 psi gauge) 1 9 3 10 18 11* 5 12* *6 13 4 14* 7 15* 8 16* 17* 20 19 30 02735 Ref. No. Part No.
PAGE 14
Parts Spring-Operated Regulators 20 to 100 psi (.14 to 0.7 MPa, 1.4 to 7 bar) Regulated Pressure Range Model 236216, Series A, includes items 1 to 20 (no gauge) Model 236450, Series A, includes items 1 to 30 (100 psi gauge) 1 9 3 10 18 11* 5 12* *6 13 4 14* 7 15* 8 16* 17* 20 19 30 02735 Ref. No. Part No.
PAGE 15
Parts Air-Operated Regulators 3 to 100 psi (.02 to 0.7 MPa, 0.2 to 7 bar) Regulated Pressure Range Model 238159, Series A, includes items 1 to 20 (no gauge) Model 236281, Series A, includes items 1 to 20, and 30 (100 psi gauge) 9 10 2 11* 18 12* 13 14* 5 15* 16* 4 17* *6 20 19 30 02733 Ref. No. Part No.
PAGE 16
Repair Kits Accessories Use Only Genuine Graco Parts and Accessories Air Filter, Moisture Separator with Regulators 217075 Kit No. 236589 For spring- and air-operated regulators Part No. Description 112348 DIAPHRAGM; PTFE with nylon fabric/buna–n base GASKET; cellulose fiber SEAT, valve; stainless steel O-RING; PTFE SPRING, compression, ball BALL, tungsten carbide O-RING; buna–n 172132 188944 109450 112204 102922 112349 Qty. 1 1 1 1 1 1 1 200 psi (1.
PAGE 17
Technical Data Maximum fluid inlet pressure . . . . . . . . . . . . . . . . 100 psi (0.7 Mpa, 7 bar) Maximum fluid operating temperature . . . . . . . . 150d F (66d C) Regulated fluid pressure range Models 236081, 236449, 241976 . . . . . . . . 3 to 30 psi (.02 to 0.2 MPa, 0.2 to 2.1 bar) Models 236216 and 236450 . . . . . . . . . . 20 to 100 psi (.14 to 0.7 MPa, 1.4 to 7.0 bar) Models 236281, 238159 . . . . . . . . . . . . . . 3 to 100 psi (.02 to 0.7 MPa, 0.2 to 7 bar) Maximum flow capacity . . . . . . .
PAGE 18
Performance Charts Model 236081, 235449, 241976 REGULATED FLUID PRESSURE psi bar 30 2.1 25 1.7 20 1.4 15 1.0 10 0.7 5 0.4 0 FLUID FLOW 0.0 gpm lpm ounces/min 0.1 0.38 13 0.2 0.76 26 0.3 1.14 38 0.4 1.51 51 0.5 1.89 64 0.4 1.51 51 0.5 1.89 64 Model 236216, 236450, 236281, and 238159 REGULATED FLUID PRESSURE psi bar 100 7.0 90 6.3 80 5.6 70 4.9 60 4.2 50 3.5 40 2.8 30 2.1 20 1.4 10 0.7 0 gpm 0.0 lpm ounces/min 18 308325 0.1 0.38 13 FLUID FLOW 0.2 0.76 26 0.3 1.
PAGE 19
Notes 308325 19
PAGE 20
Graco Standard Warranty Graco warrants all equipment manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.