Table of Contents
Advertisement
Quick Links
ISO Registered Company
I. DESCRIPTION AND SCOPE
Model PGR-1 is a pressure reducing regulator used to control downstream (outlet or P2) pressure. Sizes are
1/2" (DN15), 3/4" (DN20), 1" (DN25), 1-1/2" (DN40), 2" (DN50), 3" (DN80) and 4" (DN100). This model is ap-
plied primarily in gaseous service.
II. REFERENCES
Refer to Technical Bulletin PGR-1-TB for tech ni cal
specifications for this reg u la tor.
III. INSTALLATION
1. Regulator may be rotated around pipe axis
360 degrees. For ease of maintenance, the
rec om mend ed position is with the cover dome
(2) up wards.
2. Provide space below, above, and around
reg u la tor for removal of parts during maintenance.
3. Install block valves and pressure gauges to
pro vide means for adjustment, operation, bypass,
or removal of the regulator. A pipeline strainer
is recommended before inlet to remove typical
pipe line debris from entering valve and damaging
internal "soft goods", primarily the dynamic seal.
4. The PGR-1 is designed to regulate pressure
via external sensing. Use 3/8" or 1/2" (DN10
or DN15) outer di am e ter tubing to connect the
sensing port on the pilot to the piping down stream
of the main regulator. If PGR-1 is constructed
with self contained feature, tubing and connection
in downstream piping is not required.
INSTALLATION, OPERATION & MAINTENANCE MANUAL (IOM)
MODEL PGR-1
DIRECT-ACTING, PRESSURE LOADED
PRESSURE REDUCING REGULATOR
SECTION I
SECTION II
SECTION III
ABBREVIATIONS
CW
–
CCW –
ITA
–
Installation of adequate overpressure pro tec tion is
recommended to pro tect the reg u la tor from overpressure
and all down stream equip ment from damage in the event
of regulator failure.
Model PGR-1
IOM-PGR-1
Clockwise
Counter Clockwise
Inner Trim Assembly
CAUTION
01-17
Advertisement
Table of Contents
Related Manuals for cashco PGR-1
Summary of Contents for cashco PGR-1
- Page 1 I. DESCRIPTION AND SCOPE Model PGR-1 is a pressure reducing regulator used to control downstream (outlet or P2) pressure. Sizes are 1/2" (DN15), 3/4" (DN20), 1" (DN25), 1-1/2" (DN40), 2" (DN50), 3" (DN80) and 4" (DN100). This model is ap- plied primarily in gaseous service.
-
Page 2: Principle Of Operation
Step. The max i mum rise 6. Slowly open the inlet (upstream) block valve to in outlet pres sure on de creas ing flow should not about 25% open. Rotate the adjusting screw exceed the 10%. If it does, consult factory. IOM-PGR-1... -
Page 3: Maintenance
Remove parts. Only use original equipment parts valve from pipeline. sup plied by Cashco for re build ing or re pair ing reg u la tors. 4. Place the main valve unit in a vise with the cover dome (2) upwards. - Page 4 (9). affect the regulator performance are stated d. Examine the com po nent(s) (15 or 15.1, below; replace parts that can not be re worked 15.2) of the dy nam ic side seal to de ter- or cleaned. IOM-PGR-1...
- Page 5 HEAVY FORCE TO ENGAGE THE Using thumbs, work the o-ring seal U-CUP SEAL INTO THE CAGE . up and into the groove of the guide bearing. NOTE: A very slight amount Type UC — U-Cup Type OR — O-Ring Dynamic Seal Dynamic Seal IOM-PGR-1...
- Page 6 8. Place new o-ring middle stem seal (13) into relieve all pressure. Failure to do so could result in groove of guide bearing (9) upper surface. personal injury. IOM-PGR-1...
- Page 7 15. Place body (30.1) in a vise with the body cap (30.3) upwards. Rotate cap bolts (30.20) CCW 10. Place range spring (30.4) in center of the to remove bracket and body cap. Remove pressure plate (30.6) cup. Apply Mobile XHP cap seal (30.16). IOM-PGR-1...
-
Page 8: Diaphragm Replacement
To prevent damage to body, use soft jaws when securing the body in a vise. Position so that vise closes over the inlet and the outlet connections. J. Changing the filter element: DIAPHRAGM REPLACEMENT - 1. See Section IV. IOM-PGR-1... - Page 9 NOTE: Pis ton (60.14) assembly is a com- (60.3) over the threaded post. Assure the po si tion seat, Cashco, Inc. does not recom- pressure plate (60.3) is placed with curved mend at tempt ing to remove the com po si- outer rim down next to the diaphragm tion seat.
- Page 10 16. Rotate the spring chamber (60.2) CW by hand into the threaded portion of the body (60.1) ensuring not to cross thread. Con- tinue ro tat ing CW until firmly seated against the upper di a phragm. Tighten to 30-35 ft-lbs (41-47 N-m) torque value. IOM-PGR-1...
-
Page 11: Troubleshooting Guide
Remedies Stem seals (13) which protect fluorocarbon Replace with new stem seals (13). elastomer in diaphragm assembly may have deteriorated. Diaphragm nut (11) may not be torqued to Confirm torque value in accordance with Section VII, F-13. correct value. IOM-PGR-1... -
Page 12: New Replacement Unit
(last digit is alpha character that reflects revision level for the product). PARTS "KIT" for FIELD REPAIR: – – Contact your local Cashco, Inc., Sales Rep re sen- ta tive with the Serial Number and Product code. NEW REPLACEMENT UNIT: Identify the parts and the quantity required to repair the unit from the "BOM"... -
Page 13: Assembled View
METERING VALVE Assembled View The PGR-1 is designed for external sensing. Use 3/8" or 1/2" (DN10 or DN15) outer di am e ter tubing to connect the pilot sensing port to a location in the piping down stream of the main regulator. - Page 14 Flange Nuts Lower Diaphragm Plate Guide Bearing * Recommended Spare Parts. Seat Items not shown Guide Bushing Mounting Bracket Static Seal (Plug) 15.2 Seal Retainer Static Seal (Cage) Seal Retainer (Dynamic) Pipe Plug (Body) Flow Arrow Name Plate Drive Screws IOM-PGR-1...
- Page 15 Cashco, Inc. does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any Cashco, Inc. product remains solely with the purchaser.
- Page 16 Indaiatuba - Sao Paulo, Brazil PH (785) 472-4461 PH +49 3342 30968 0 PH +55 11 99677 7177 Fax (785) 472-3539 Fax. No. +49 3342 30968 29 Fax. No. www.cashco.com www.cashco.com www.cashco.com email: sales@cashco.com email: germany@cashco.com email: brazil@cashco.com Printed in USA IOM-PGR-1...
- Page 17 ATEX requires that all components and equipment be evaluated. Cashco pressure regulators are considered components. Based on the ATEX Directive, Cashco considers the location where the pressure regulators are installed to be classified Equipment-group II, Category 3 because flammable gases would only be present for a short period of time in the event of a leak.
- Page 18 If the above issues are addressed by selecting options that do not have potential sources of ignition, avoiding options that have not been assessed, and by taking the proper usage issue precautions, then Cashco regulators can be considered to be a mechanical device that does not have its own source of ignition and thus falls outside the scope of the ATEX directive.
Need help?
Do you have a question about the PGR-1 and is the answer not in the manual?
Questions and answers