North American High Pressure Gas Pilot Specifications
Sheet 4018
1.50 (38)
dimensions inches (mm)
2.88 (73)
2.63 (67)
air shutter
coupling
¼ FNPT pipe size
A
inspirator mixer
air inlet
globe valve
pilot tip
9 17⁄32 (242)
The 4018 pilots are sold as an assembly, which includes a globe valve, a simple inspirator mixer and a 4027 pilot tip. They are available with manual ignition or spark ignition. The pilot tip exit has a ¾ " Male NPT thread or a slip-fit mounting connection. See the dimensions on the last page.
Specify the fuel being used when ordering a 4018 pilot. The fuel options are listed below. With Natural gas, the capacity is 7300 Btu/h HHV for 10 psi gas pressure. See page 2 for important ap- plication information and limitations.
4018 PILOT SETS
Pilot Designation
Pilot Designation
-A-
Igniton
Incorporated 4027 Pilot tip
Natural Gas
Other Fuels
Dimension
Description
4018-MT2425-77 4018-M25-77 4018-M24-77 4018-T2425-77
4018-MT2425-# 4018-M25-# 4018-M24-# 4018-T2425-#
¾ " threaded MNPT
4027-01-MT2425 4027-01-M25 4027-01-M24 4027-01-T2425
1 1⁄8 "Ø slip-fit 1" Ø slip-fit
manual ignition
¾ " threaded MNPT
spark ignition with included
4018-25-77 4018-24-77
4018-25-# 4018-24-#
1 1⁄8 " Ø slip-fit 1" Ø slip-fit
4027-01-25 4027-01-24
R240-2465 ignitier
NOTE: Complete designation by adding appropriate spud drill name for gas to be used, see table below. Example: for Propane, with 1 1⁄8 " Ø slip-fit spark ignition = 4018-25-80
Type of Gas
Speci fi c Gravity
Btu/ft 3 HHV
Minimum Gas
Spud Drill
Spud Part Number 4-2158-10 4-2158-11 4-2158-12 4-2158-13
Pressure PSI (mbar)
Name
Natural
0.6
1000 800 550 2500
5 (345) 5 (345) 2 (140)
#77 #75 #71 #80
Mixed natural
0.55 0.4 1.55
Coke oven
Propane
5 to 10 (345-690)
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