Product Handbook 2026 - Volume 1

Flowmetering Gilflo and ILVA flowmeters 3

Sizing - Gilflo 'B' flowmeter minimum and maximum saturated steam flowrate in lb/h Notes: 1. Q E = The equivalent water flowrate U.S. GPM for a Gilflo 'B' flowmeter. These equivalent water flowrates are based on a differential

pressure across the flowmeter of 140 inches H 2 O. 2. Minimum flow is 1% of maximum (100:1 turndown). 3. The table below is a guide only.

Steam pressure psi g

Size

Q E

15

50

75

100

150

200

400

Max.

94

1625

2353

2748

3096

3690

4203

5842

2"

Min.

2

16

24

27

31

37

42

58

Max.

308

5332

7721

9018

10162

12110

13793

19172

3"

Min.

7

53

77

90

102

121

138

192

Max.

494

8559

12394

14475

16311

19438

22139

30773

4"

3.2 37

Min.

11

86

124

145

165

195

221

308

Max.

1202

20825

30156

35220

39687

47295

53868

74876

6"

Min.

12

207

302

352

399

473

539

749

Max.

2136

37004

53585

62582

70520

84040

95719

133050

8"

Min.

21

368

530

626

710

841

956

1331

Max.

2938

50894

73700

86075

96993

115587

131651

182995

10"

Min.

29

505

737

861

977

1156

1317

1830

Max.

5100

88356

127948

149431

168385

200666

228554

317690

12"

Min.

51

877

1280

1494

1698

2007

2286

3177

Max.

8284

143530

207845

242744

273534

325972

371275

516072

16"

Min.

83

1430

2079

2428

2735

3260

3713

5161

How to order example 1 off Spirax Sarco DN150 Gilflo 'B' flowmeter flanged to EN 1092 PN16.

TI-P337-08 EMM Issue 9

Page 7 of 7

Gilflo 'B' Flowmeter Pipeline Unit

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