ITT Conoflow GH30 Series Back Pressure Regulator Instruction Manual
- June 3, 2024
- ITT Conoflow
Table of Contents
ITT Conoflow GH30 Series Back Pressure Regulator
WARNING
Conoflow’s products are designed and manufactured using materials and workmanship required to meet all applicable industry standards. The use of these products should be con lined to services specified and/or recommended in the Conoflow catalogs, instructions or by Conotlow application engineers (i.e. exceeding pressure-temperature rating or using devices for services other than those specified). To avoid personal injury or equipment damage due to misuse or misapplication of a product, it is necessary to select the proper materials of construction and pressure-temperature ratings which are consistent with performance requirements.
PRINCIPLE OF OPERATION
Turning the handwheel changes the force exerted by the range spring on the diaphragm assembly. In equilibrium, the force exerted by the range spring is balanced by the force from the back pressure acting underneath the diaphragm assembly. If the back pressure rises above the set pressure, the diaphragm seat is lifted allowing the nozzle plug to open. The excess pressure flows through the port to the back) the feature is reduced to· the set point. While the back pressure is at or below the set point, the range spring holds the nozzle plug against its seat shutting off the flow to the exhaust port.
INSTALLATION
DIMENSIONS
CAUTION: Maximum Inlet Pressure is 150 PSl (l034 kPa)
The unit has two ¼ ” N.P.T. connections. The inlet connection is marked “IN”. IT IS RECOMMENDED THAT A FILTERED AIR SUPPLY BE USED. Check all connections for leakage after installation. The adjusting knob should be kept well lubricated with grease.
MAINTENANCE
Remove air supply pressure prior to performing maintenance.
Periodic replacement of the diaphragm assembly and nozzle assembly is recommended for services where the unit is on stream continuously and where consistent, high-accuracy regulation is required. The frequency of replacement will depend on the nature of the service, cleanliness of air, humidity of the air, etc. To replace the diaphragm assembly (4), loosen the handwheel until spring tension is relieved. Remove six screws (10) and lift off the bonnet (3), spring plate (2), spring (9) and diaphragm assembly (4). Place new diaphragm assembly (4) over body, with diaphragm plate up. Place spring (9) and spring plate (2) on diaphragm assembly (4), re-install bonnet (3) and tighten six screws (10). The six screws should be tightened alternately. To replace nozzle assembly remove plug (6) and plug spring (11). Use a socket wrench to remove and replace the nozzle retaining nut (5). Remove the nozzle (12) and the “O” ring (7). Nozzle assembly may be cleaned by immersion in a suitable solvent and blow dry with air stream.
Item No.| Description| Oty. Req’d.| GH30XTHMXXX(2)| GH30XTHAXKX(2) 303 St.
Stl.| GH30XTHAXSX(2) 316 St. Stl.
---|---|---|---|---|---
1| Handwheel Assembly| 1| 6017792| 6017792| 6017792
2| Sorin,;i Plate| 1| 6017164| 6017164| 6017164
3| Bonnet| 1| 6017701| 6017701| 6017701
4(1)| Diaphragm Assembly
0-3, 5, 15, 25, 35, 50 PSI
(0-21, 35, 103 172, 241, 345 kPa)
|
1
1
|
6019988
|
6019996
|
6384823
0-125 PSI C0-862 kPal| 1| 6020085| 6020077| 6385163
5| Nozzle RetaininR Nut| 1| 6019574| 6385062| 6384230
6| PluR| 1| 6019566| 6019566| 6384820
7(1)| “O” Ring| 1| 6076640| 6076665| 6076665
8| locknut| 2| 6017628| 6017628| 6017628
9| Range Spring
-Silver 0-3 PSl(0-21 kPa)
|
1
|
6385057
|
6385057
|
6385057
-Gold 0-5(0-35 kPa)| 1| 6017099| 6017099| 6017099
-Blue 0-15 PSII0-103 kPal| 1| 6018378| 6018378| 6018378
-Black 0-25135 PSII0-1721241 kPal| 1| 6017453| 6017453| 6017453
-White 0-50/125 PSl(0-3451862 kPa)| 1| 6017834| 6017834| 6017834
10| Fill. Hd. Screw #8-32 x 3/8″ lg.| 6| 6900046| 6900046| 6900046
11| Plug Spring
0-3,5,15.25,35,50 PSI
(0-21, 35, 103, 172, 241, 345 kPa)
|
1
|
6017289
|
6017289
|
6384821
0-125 PSI C0-862 kPal| 1| 6019962| 6384822| 6384822
12| Nozzle| 1| 6019871| 6384233| 6384828
13| Body| 1| 6019970| 6019913| 6019913
14| Restricting Plate (0-125 PSl(0-862 kPa) Only:| 1| 6017487| 6017487|
6017487
WARNING: MANUFACTURED WITH (1, 1, 1-TRICHI.OROETHANE), A SUBSTANCE THAT HARMS PUBLIC HEALTH AND THE ENVIRONMENT BY DESTROYING OZONE IN THE UPPER ATMOSPHERE.
NOTES: Recommended Spare Parts can be purchased individually or as spare parts kit under numbers Consists of Items 4 and 7.
- For the definition of catalog number refer to Sales Bulletin C-2008.
- When ordering spare parts, specify the complete catalog no item no. and part no. This will permit positive identification and rapid handling of order.
ITT CONOFLOW
- Highway 78 P.O. Box 768 St. George, South Carolina 29477-0768
- Telephone: 803-563-9281
- FAX: (803)563-2131
WARNING: TECHNICAL DATA SUBJECT TO EAR CONTROLS
This document contains technical data whose export is restricted by the Export Administration Act of 1979, as amended (Title 50, U.S.C., App. 2401, et seq.) Violation of this export control law is subject to severe criminal penalties.
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