BULLETIN MI2051-02/06

Capacity Charts for GasPressure Regulators

The capacity of any regulator is not an absolute value, but will vary with the applicationdepending on the prevailing differential. We hope the following charts will help you inyour selection of a properly sized regulator.Maxitrol gas appliances regulators should be installed and operated inaccordance with our “Safety Warning Bulletin” — no untrained person should attempt toinstall, maintain, or service a gas pressure regulator.

POPPET MODELS — capacities expressed in Btu/h. — 0.64 sp gr gasMaxitrol recommended maximum inlet pressure.................... 1/2 psi

Model Pipe SizePressure Drop

@ 0.3” w.c.Range of Regulation

Main Burner M.B. and PilotIndividual Load

Ball CheckDevicesFixed Orifices

RV12 1/8” x 1/8”3/16” x 3/16”

14,8008,800

30,000 25,00015,000

20,00015,000

—

RV201/4” x 1/4”3/8’’ x 3/8” 30,000 65,000 50,000 30,000 —

RV20C1/4” X 1/4”3/8” X 3/8” 30,000 75,000 50,000 15,000 —

CV47RV47

3/8” X 3/8”1/2” X 1/2”

55,00060,000 125,000 90,000 40,000 125,000

CV47A & CRV47A & C

3/8” X 3/8”1/2” x 1/2”

55,00060,000 125,000 125,000 40,000 125,000

RV481/2” X 1/2”3/4” X 3/4”

130,000150,000

230,000250,000

230,000250,000 40,000 160,000

RV48C1/2” x 1/2”3/4” x 3/4”

130,000150,000 400,000

275,000 Nat250,000 LP 40,000 160,000

NOTE: Minimum main burner regulation capacity for all models (except “N”) is 150 Btu/h

STRAIGHT-THRU-FLOW — capacities expressed in CFH — 0.64 sp gr gasMaxitrol recommended maximum inlet pressure: RV52 & 53..................1/2 psi

RV61, 81, 91 & 111..... 1 psiR131............................ 2 psi

Model Number and PipeSize

CSAMAX 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 2.0 3.0 4.0

RV52 1/2 x 1/23/4 x 3/4

450450

151151

214214

262262

302302

338338

370370

400400

427427

453453

478478

676676

828828

956956

RV533/4 x 3/4

1 x 1710710

217217

306306

375375

433433

484484

530530

573573

612612

650650

684684

968968

11851185

13691369

RV61 1 x 11-1/4 x 1-1/4

11001100

379379

536536

675675

759759

848848

929929

10041004

10731073

11381138

12001200

17421742

21342134

24642464

RV811-1/4 x 1-1/41-1/2 x 1-1/2

25002500

780780

11021102

13501350

15591559

17431743

19091909

20622062

22042204

23392339

24652465

34853485

42694269

49294929

RV91 2 x 22-1/2 x 2-1/2

32753275

12121212

17141714

21002100

24242424

27112711

29692969

32083208

34293429

36373637

38343834

54225422

66406640

76687668

RV111 2-1/2 x 2-1/23 x 3

75007500

27422742

38783878

47504750

54855485

61326132

67186718

72567256

77577757

82278227

85728572

1213412134

1486214862

1716117161

RV131 4 x 4 — 4734 6695 8200 9468 10586 11596 12525 13390 14202 14971 21172 25930 29942

Pressure Drop (inches w.c.)

325 SERIES — capacities expressed in CFH — 0.64 sp gr gas325 Appliance RegulatorsMaximum inlet pressure..............10 psi (2 or 5 psi CSA)

Model Number and PipeSize (Inlet & Outlet) 0.3” 0.5” 1.0” 3.0” 5.0” 7.0” 1/2 psi 3/4 psi 1 psi

Pressure Drop

325-3

325-5A

30 39 55 95 123 146 205 251 287

68 88 125 217 280 331 465 570 658

3/8”, 1/2”

1/2”, 3/4”, 1”

CSA Max.Capacity

CSA Max.Ind. Load

325-7

325 2 psi Line RegulatorsMaximum inlet pressure.................2 psi (CSA)

325-3L

325 5 psi Line RegulatorsMaximum inlet pressure...................5 psi (CSA)

Model Number and PipeSize (Inlet & Outlet)

CSA Max.Capacity

CSA Max.Ind. Load

Pressure Drop1.0” 3.0” 5.0” 7.0” 1/2 psi 3/4 psi 1 psi 1.5 psi 1.75 psi

1.5 psi 1.75 psi

260 450 581 690 972 1191 1375 1685 1820

150 100

300 250

900 1000- 142 184

355

806

383

870

3/8”, 1/2”

1/2”

1-1/4”, 1-1/2”

250

425550

1000

140

300

900

55

125

260

95

217

450

123

280

581

146

331

690

205

465

972

-

-

- - -

300 125 217 280 331

1-1/4”1-1/2” -

--

-

--

-

--

-

--

-

- : Non-CSA Certified

3/4”, 1”325-5AL

325-7L

325-5AL48

325-5AL600

325-7L210D

325-3L48

325-3L47

Model Number and PipeSize (Inlet & Outlet)

CSA Max.Capacity

CSA Max.Ind. Load

3/8”, 1/2”

1/2”

1/2”

3/4”3/4”

1”

1-1/4”

1-1/2”

125

200

235320425

465

900

125

200

235

320425

465

900

50

61

120124

131

143

250

87

106

208215227

248

433

112

136

277-

293

320

559

132

161

-

347

378

661

1.0” 3.0” 5.0” 7.0”Pressure Drop

- - - - -

- - - - -

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

1/2 psi 3/4 psi 1 psi 1.5 psi 1.75 psi

- - - - - -

- - - - -

CAUTION: Operation of combustion equip-ment can be hazardous resulting in bodilyinjury or equipment damage. Each burnershould be supervised by a combustion safe-guard and only qualified personnel shouldinstall, make system adjustments and per-form any required service.

NOTICE: Maxitrol practices a policyof continuous improvement in the de-sign of its products. It reserves theright to change the specifcations atany time without prior notice.

ORDAN THERMAL PRODUCTS LTDCombustion Equipment & Controls for Industry

21 Amber St # 9, Markham Ontario Canada L3R 4Z3 Tel: (905) 475-9292 Fax: (905) 475-3286

www.ordanthermal.com

210 SERIES — capacities expressed in CFH — 0.64 sp gr gasMaxitrol recommended maximum inlet pressure..................10 psiModel Number and

Pipe Size

210D

210E

210G

210J

1 x 11-1/4 x 1-1/41-1/2 x 1-1/2

1-1/2 x 1-1/22 x 2

2-1/2 x 2-1/23 x 3

4 x 4

———

——

14101555

2700

0.1 0.3

10501210

24502695

4700

———

0.5 1.0 3.0 5.0 7.0 1/2 psi 3/4 psi 1 psi 1.5 psi

———

13501560

31603475

90011001200

19152210

44704920

8600

160019002100

33153825

77408520

15000

200025002700

42804940

999511000

19000

240029003200

50655845

1182513020

23000

330041004500

71258225

1663518310

32000

410050005500

872510070

2037522425

40000

475058506350

1007511630

2352525890

45500

580071507750

1234014245

2881031710

55700

R/RS SERIES — capacities expressed in CFH — 0.64Maxitrol recommended maximum inlet pressure: R Model..............1 psi

RS Model........... 5 psi

Model Number andPipe Size

R400 &R400SR500 &R500S

R600 &R600S

3/8 x 3/81/2 x 1/21/2 x 1/23/4 x 3/4

3/4 x 3/41 x 1

Pressure Drop (inches w.c.)

Pressure Drop (inches w.c.)0.2 0.4 0.6 0.8 1.0 1.5 2.0 2.5 3.0 3.5 4.0

7786163196

298330

110121231277

421468

134148283340

516572

155172327392

595661

174192366438

666739

212235447537

816906

245271516620

9421046

274303577693

10541169

——

635760

11501280

——

685820

12451380

——730876

13351480

6000

CAUTION: Operation of combustion equip-ment can be hazardous resulting in bodilyinjury or equipment damage. Each burnershould be supervised by a combustion safe-guard and only qualified personnel shouldinstall, make system adjustments and per-form any required service.

NOTICE: Maxitrol practices a policyof continuous improvement in the de-sign of its products. It reserves theright to change the specifcations atany time without prior notice.

ORDAN THERMAL PRODUCTS LTDCombustion Equipment & Controls for Industry

21 Amber St # 9, Markham Ontario Canada L3R 4Z3 Tel: (905) 475-9292 Fax: (905) 475-3286

www.ordanthermal.com