OPERATION: The Pilot Assembly and Motor Valve Stem Assembly (Crosshatched) are the only moving units in the regulator. The PILOT PLUG consists of two stainless balls rigidly connected together. The upper seat for the PILOT PLUG is the Motor Valve Diaphragm Pressure inlet (Red to Yellow). The lower seat for the PILOT PLUG is the pressure vent (Yellow to Atmosphere). The PILOT SPRING in the bonnet loads the upper side of the Pilot Assembly and is opposed on the underside by Upstream Pressure (Red). Assume the PILOT SPRING is compressed with the ADJUSTING SCREW for a set pressure greater than the Upstream Pressure (Red). The Pilot Assembly is forced down-ward by the PILOT SPRING. The lower seat for the PILOT PLUG (Yellow to Atmosphere) is closed and the upper seat for the PILOT PLUG (Red to Yellow) is open. This lets full Upstream Pressure (Red) load the motor valve. The area of the MOTOR VALVE DIAPHRAGM is twice the area of the motor valve seat, assuring a positive shut-off. As the Upstream Pressure (Red) increases to the set pres-sure, the Pilot Assembly moves upward against the PILOT SPRING to first close the upper seat (Red to Yellow) and open the pressure vent (Yellow to Atmosphere). As the Motor Valve Diaphragm Pressure (Yellow) is decreased, the Upstream Pressure (Red) acting under the motor valve seat, opens the valve. With relief of Upstream Pressure (Red) through the motor valve, the Pilot Assembly assumes a position in which both seats of the PILOT PLUG are closed. The intermittent bleed pilot, three-way valve action of the PILOT PLUG against its seat adjusts the Motor Valve Diaphragm

Pressure (Yellow), repositioning the Motor Valve Stem Assembly to accommodate any rate of flow. The rapid but

stable repositioning produces a true throttling action.

PRESSURE REGULATORS

GAS BACK PRESSURE

A:10.1Issued 9/08www.kimray.com

APPLICATION: Vent lines on oil separators, flow treaters, compressor sta-tions, gas gathering systems.

PRESSURE RANGE: Cast Iron: 5 psig to 125 psig Ductile Iron: 10 psig to 280 psig Steel: 10 psi to 280 psig

CAPACITY: Refer to Table of Contents.

Configuration of Back Pressure Valve ia a trademark of Kimray, Inc.

PRESSURE REGULATORS

GAS BACK PRESSURECAST IRON

THRU VALVES AVAILABLE: ANGLE VALVES AVAILABLE:

www.kimray.com

CAT. SIZE OPER. MAX NO. TYPE REG. NO PRES. W.P. KIT

CAT. SIZE OPER. MAX NO. TYPE REG. NO PRES. W.P. KIT

AKA 1" SCRD. 112 SGT BP 125 175 RRTAAA 2" SCRD. 212 SGT BP 125 175 RAAAAB 2" FLGD.a 212 FGT BP 125 175 RAAAAC 2" GRVD. 212 GGT BP 125 175 RAAAAD 3" SCRD. 312 SGT BP 125 175 RABAAE 3" FLGD.a 312 FGT BP 125 175 RABAAF 4" SCRD. 412 SGT BP 125 175 RACAAG 4" FLGD.a 412 FGT BP 125 175 RACAAH 6" FLGD.a 612 FGT BP 125 175 RAD

A:10.2Issued 10/08

ASA 2" SCRD. 212 SGA BP 125 175 RAA

Dimensions, refer to Table of Contents.

*These parts are recommended spare parts and are stocked as repair kits.

The numbers of a series assigned to a part indicate different line sizes. For example: Diaphragm 127-1", 128-2", 129-3", 130-4", 131-6".

Configuration of Back Pressure Valve is a trademark of Kimray, Inc.

LINE THRU ANGLE SIZE SCREWED FLANGED GROOVED SCREWED 1" 182 2" 183 184 1500 4949 3" 185 186 4" 187 188 6" 189

Gas capacities are based on pressure taken immediatelyupstream and downstream from the regulator in a wide openposition.

Critical flow exists across a valve or orifice when the down-stream absolute pressure is approximately half of the upstreamabsolute pressure. Any decrease in downstream pressure willnot increase the flow through the valve. Critical flow conditionson the charts are represented by the MAXIMUM CAPACITYLINE.

A:140.3Issued 3/06

GAS CAPACITY CHARTS

200, 275, 300 & 500 lbs. Maximum W.P. Valves

www.kimray.com

HOW TO USE CHARTS: Locate UPSTREAM PRESSURE atleft of chart. Follow horizontally across to PRESSURE DROP(upstream minus downstream pressure). Read VOLUME direct-ly below. If the horizontal projection of the upstream pressuredoes not intersect the given pressure drop, flow is critical. In thiscase project UPSTREAM PRESSURE horizontally to the MAXI-MUM CAPACITY LINE and read VOLUME directly below.

*For gravity correction multiply above capacities bywhere G equals specific gravity of gas.

.65G;

120

8 10

15

20

30

40

50

60

80

100

110

PRESSURE D

ROP-L

BS P

ER S

Q. IN

.

MAX

IMUM

CAP

ACITY LINE

GAS CAPACITY CHART

140 TO 515

ABSOLUTE P.S.I. PRESSURE

2 in. "G" SERIES REGULATORS

3.5 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

VOLUME-MILLIONS CU. FT. PER 24 HRS-.65 SPECIFIC GRAVITY GAS @ 14.4 & 60 *

UPSTR

EAM P

RESSURE-L

BS. PER S

Q. IN

. ABSOLU

TE (Gau

ge +

14.4 p

.s.i.)

140

150

160

170

180

190

200

210

220

230

240

250

260

270

280

290

300

310

320

330

340

350

360

370

380

390

400

410

420

430

440

450

460

470

480

490

500

510515

Gas capacities are based on pressure taken immediatelyupstream and downstream from the regulator in a wide openposition.

Critical flow exists across a valve or orifice when the down-stream absolute pressure is approximately half of the upstreamabsolute pressure. Any decrease in downstream pressure willnot increase the flow through the valve. Critical flow conditionson the charts are represented by the MAXIMUM CAPACITYLINE.

A:140.4Issued 3/06

GAS CAPACITY CHARTS

220, 275, & 300 lbs. Maximum W.P. Valves

www.kimray.com

HOW TO USE CHARTS: Locate UPSTREAM PRESSURE atleft of chart. Follow horizontally across to PRESSURE DROP(upstream minus downstream pressure). Read VOLUME direct-ly below. If the horizontal projection of the upstream pressuredoes not intersect the given pressure drop, flow is critical. In thiscase project UPSTREAM PRESSURE horizontally to the MAXI-MUM CAPACITY LINE and read VOLUME directly below.

*For gravity correction multiply above capacities bywhere G equals specific gravity of gas.

.65G;

8 9 10 11 12 13 14 15 16 17 18 19 20 25 30

!"

#$%

&

'

(

)

*

+

,

140

150

160

170

180

190

200

210

220

230

240

250

260

270

280

290

300

310

315

-

.

-

,

.

.(/00

Gas capacities are based on pressure taken immediatelyupstream and downstream from the regulator in a wide openposition.

Critical flow exists across a valve or orifice when the down-stream absolute pressure is approximately half of the upstreamabsolute pressure. Any decrease in downstream pressure willnot increase the flow through the valve. Critical flow conditionson the charts are represented by the MAXIMUM CAPACITYLINE.

A:140.5Issued 3/06

GAS CAPACITY CHARTS

220, 275, & 300 lbs. Maximum W.P. Valves

www.kimray.com

HOW TO USE CHARTS: Locate UPSTREAM PRESSUREas left of chart. Follow horizontally across to PRESSURE DROP(upstream minus downstream pressure). Read VOLUME direct-ly below. If the horizontal projection of the upstream pressuredoes not intersect the given pressure drop, flow is critical. In thiscase project UPSTREAM PRESSURE horizontally to the MAXI-MUM CAPACITY LINE and read VOLUME directly below.

*For gravity correction multiply above capacities bywhere G equals specific gravity of gas.

.65G;

14 15 16VOLUME - MILLIONS CU. FT. PER 24 HRS. - .65 SP. GR. GAS AT 14.4 & 60 *

UPSTR

EAM P

RESSURE -

LBS. PER S

Q. IN

. ABSOLU

TE (Gau

ge +

14.4 p

.s.i.)

MAX

IMUM

CAP

ACITY LINE

140

150

160

170

8 10 15 20

30

40 50 6

0

GAS CAPACITY CHART

140 TO 315

ABSOLUTE P.S.I. PRESSURE

4 in. "G" SERIES

100

80

PRESSURE D

ROP -

LBS. PER S

Q. IN

.

17 18 19 20 25 30 35 40 45 50 52

180

190

200

210

220

230

240

250

260

270

280

290

300

310

315

A:140.7Issued 3/06

LIQUID CAPACITY CHARTS

300 lbs. Maximum W.P. Valves

www.kimray.com

PRESSUREDROP

ACROSSVALVEPSIG

VALVE SIZE - INCHES

1 2 3 4

1

2

3

4

5

10

15

20

30

40

50

60

70

80

100

125

150

200

250

300

745

1,060

1,300

1,500

1,700

2,300

2,900

3,300

4,100

4,700

5,300

5,800

6,200

6,700

7,500

8,400

9,300

10,750

12,100

13,300

1,760

2,500

3,050

3,500

3,900

5,600

6,800

7,900

9,600

11,100

12,400

13,600

14,700

15,700

17,600

19,700

21,500

25,000

28,000

30,900

3,350

4,900

6,100

7,000

7,800

11,000

13,500

15,600

19,200

22,100

24,800

27,100

29,300

31,300

33,500

39,200

40,750

47,000

52,000

57,250

7,800

11,000

13,500

15,600

17,500

24,700

30,200

34,900

42,700

49,300

55,200

60,500

65,400

69,800

78,200

87,500

93,000

108,000

120,000

130,000

1GFor gravity correction, multiply the above figures by

Where G is the specific gravity of the flowing liquid.

CAPACITY-Bbls. Water/Day, Steady Flow

A:140.8Issued 8/06

1 " SCRD

SCRD

FLGD

SCRD

FLGD

GRVD

SCRD

FLGD

FLGD

FLGD

SCRD

2 "

3 "

250S/FGT

4 "

6 "

4 3/8"

8 3/4"

12"

8 1/2"

9"

12 3/16"

15"

15 1/8"

22 1/8"

1 1/8"

2 1/8"

3 1/16"

2 1/8"

4"

3

3 3/4"

1 3/4"

3 1/4"

4 1/2"

5 1/2"

7 1/2"

11 1/2"

13"

11 1/2"

11 1/2"

13"

14 1/2"

14 1/2"

17"

9 1/8"

10 1/2"

10 1/2"

12 5/16"

15"

22"

14 1/2"

16 1/2"

18 1/2"

20 1/2"

11 5/8"

101/2"

12"

10 1/2"

10 1/2"

12"

13 3/16"

13 3/16"

14 7/8"

14"

15 1/2"

16 11/16"

18 3/8"

3 1/4"

6 1/2"

8 1/2"

6 1/2"

6 1/2"

8 1/2"

10 1/2"

10 1/2"

16"

GAS SERIES REGULATOR

DIMENSIONS

www.kimray.com

FOR:

FOR: LOW PRESSURE BACK PRESSUREOUNCES BACK PRESSURE TO VACUUMOUNCES PRESSURE REDUCINGOUNCES PRESSURE REDUCING VACUUMVACUUM BACK PRESSURE TO VACUUM

PRESSURE DIFFERENTIALPRESSURE REDUCINGBACK PRESSURE VACUUMLIQUID BACK PRESSURE

BACK PRESSUREUPSTREAM DIFFERENTIAL PRESSUREPRESSURE REDUCING-BALANCEDPRESSURE REDUCING VACUUM

LINESIZE

BODYSTYLE A B C D* FE G H* I

F

D

CB

A

8-3/8"

B

E

C

AF

FLANGE DIMENSIONS ARE ANSI 125/150 STANDARD. *Add 7/8" to PRB and USDP Regulators for this dimension.

Configuration of Back Pressure Valve is a trademark of Kimray, Inc.

I

C

G

8-3/8"

F

F

G

H

C

CAST IRON OR DUCTILE STEEL 250 S/FGT-BP-S

CAST IRON OR DUCTILE STEEL

10-1/2"

3-1/4"

21"

13"7-7/8"

1-3/4"

/ColorImageDict > /JPEG2000ColorACSImageDict > /JPEG2000ColorImageDict > /AntiAliasGrayImages false /CropGrayImages true /GrayImageMinResolution 300 /GrayImageMinResolutionPolicy /OK /DownsampleGrayImages true /GrayImageDownsampleType /Bicubic /GrayImageResolution 300 /GrayImageDepth -1 /GrayImageMinDownsampleDepth 2 /GrayImageDownsampleThreshold 1.50000 /EncodeGrayImages true /GrayImageFilter /DCTEncode /AutoFilterGrayImages true /GrayImageAutoFilterStrategy /JPEG /GrayACSImageDict > /GrayImageDict > /JPEG2000GrayACSImageDict > /JPEG2000GrayImageDict > /AntiAliasMonoImages false /CropMonoImages true /MonoImageMinResolution 1200 /MonoImageMinResolutionPolicy /OK /DownsampleMonoImages true /MonoImageDownsampleType /Bicubic /MonoImageResolution 1200 /MonoImageDepth -1 /MonoImageDownsampleThreshold 1.50000 /EncodeMonoImages true /MonoImageFilter /CCITTFaxEncode /MonoImageDict > /AllowPSXObjects false /CheckCompliance [ /None ] /PDFX1aCheck false /PDFX3Check false /PDFXCompliantPDFOnly false /PDFXNoTrimBoxError true /PDFXTrimBoxToMediaBoxOffset [ 0.00000 0.00000 0.00000 0.00000 ] /PDFXSetBleedBoxToMediaBox true /PDFXBleedBoxToTrimBoxOffset [ 0.00000 0.00000 0.00000 0.00000 ] /PDFXOutputIntentProfile () /PDFXOutputConditionIdentifier () /PDFXOutputCondition () /PDFXRegistryName () /PDFXTrapped /False

/CreateJDFFile false /Description > /Namespace [ (Adobe) (Common) (1.0) ] /OtherNamespaces [ > /FormElements false /GenerateStructure false /IncludeBookmarks false /IncludeHyperlinks false /IncludeInteractive false /IncludeLayers false /IncludeProfiles false /MultimediaHandling /UseObjectSettings /Namespace [ (Adobe) (CreativeSuite) (2.0) ] /PDFXOutputIntentProfileSelector /DocumentCMYK /PreserveEditing true /UntaggedCMYKHandling /LeaveUntagged /UntaggedRGBHandling /UseDocumentProfile /UseDocumentBleed false >> ]>> setdistillerparams> setpagedevice