Vulcan-Hart ML-136094 用户手册
GAS KETTLES
— 7 —
Gas Connection Data
FLEXIBLE GAS CONNECTORS BTU/hr. FLOW CAPACITY
1, 2
LENGTH
3
LENGTH
3
End Fittings - (1) Quick Disconnect
& (1) Threaded
End Fittings - Both Threaded
ID
36"
48"
60"
72"
36"
48"
60"
72"
1
/
2
"
77,000
68,000
60,000
55,000
120,000
106,000
93,000
86,000
3
/
4
"
218,000
180,000
158,000
139,000
256,000
225,000
198,000
175,000
1"
379,000
334,000
294,000
279,000
512,000
451,000
397,000
350,000
1
1
/
4
" 615,000
541,000
476,000
419,000
946,000
833,000
733,000
645,000
1. Flow rating BTU/hr. 0.64 SP. GR @ 0.5 inch W.C. pressure drop.
2. BTU/hr. flow capacities are based on Dormont Mfg. Co. Supr-Safe gas line connectors and are
provided for reference. Additional quick disconnect fittings, swivels, or manual shut off valves will
reduce the BTU/hr. flow capacities listed in this table. If other flexible gas connectors are used,
check the manufacturer’s specifications for BTU/hr. flow capacities. Supr-Safe is a registered
trademark of the Dormont Manufacturing Company.
reduce the BTU/hr. flow capacities listed in this table. If other flexible gas connectors are used,
check the manufacturer’s specifications for BTU/hr. flow capacities. Supr-Safe is a registered
trademark of the Dormont Manufacturing Company.
3. The maximum length for a flexible gas connector is 72" per National Fuel Code standards.
BLACK IRON PIPE BTU/hr. FLOW CAPACITY
1, 2, 3
Natural Gas
Nominal Inside Diameter of Pipe
Pipe Length
1
/
2
"
3
/
4
"
1"
1
1
/
4
"
1
1
/
2
"
2"
15'
76,000
172,000
345,000
750,000
1,220,000
2,480,000
30'
52,000
120,000
241,000
535,000
850,000
1,780,000
45'
43,000
99,000
199,000
435,000
700,000
1,475,000
60'
38,000
86,000
173,000
380,000
610,000
1,290,000
75'
77,000
155,000
345,000
545,000
1,120,000
90'
70,000
141,000
310,000
490,000
1,000,000
1. Flow rating BTU/hr. 0.64 SP. GR @ 0.3 inch W.C. pressure drop.
2. BTU/hr. flow capacities are based on Schedule 40 pipe, include a tolerance for pressure losses
in gas piping systems are provided for reference.
3. Count each 90° elbow as 3' of gas pipe for the purpose of calculating total pipe length.
TESTING THE GAS SUPPLY SYSTEM
When gas supply pressure exceeds
1
/
2
psig (3.45 kPa), the kettle and its individual shutoff valve must
be disconnected from the gas supply piping system.
When gas supply pressure is
1
/
2
psig (3.45 kPa) or less, the kettle should be isolated from the gas
supply system by closing its individual manual shutoff valve.