Initial start-up (no load, Initial start-up (no load), Fuel pipe sizing – Briggs & Stratton 01897-0 User Manual

Page 14

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14

Briggs & Stratton Power Products Standby Generator

Installation, Start-Up and Owner’s Manual

Fuel Pipe Sizing

Figures 8 and 9 provide the maximum capacity of pipe in
cubic feet of gas per hour for gas pressures of 0.5 psi or
less and a pressure drop of 0.3 in. water column. Specific
gravity of gas is shown.

Listed values compensate for a nominal amount of
restriction from bends, fittings, etc. If an unusual number of
fittings, bends, or other restrictions are used, please refer
to federal and local codes.

NPT

10ft

15ft

20ft

30ft

40ft

50ft

60ft

70ft

80ft

90ft

100ft

1/2”

168

146

115

93

79

70

63

59

55

51

48

3/4”

346

293

240

192

163

145

132

120

113

106

99

1”

653

549

446

360

307

274

250

230

211

197

187

Natural Gas (sg=0.65)

NPT

10ft

15ft

20ft

30ft

40ft

50ft

60ft

70ft

80ft

90ft

100ft

1/2”

110

96

76

61

52

46

42

38

36

33

32

3/4”

277

192

158

126

107

95

87

79

74

69

65

1”

428

360

293

236

202

180

164

151

139

129

123

Liquid Propane (LP) (sg=1.50)

Figure 8 — NATURAL GAS (NG) Pipe Size - Gas Flow Chart, in cubic feet per hour

Figure 9 — LIQUID PROPANE (LP) GAS Pipe Size - Gas Flow Chart, in cubic feet per hour

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