Maxitrol GF40-1-44 Manual

1
GF60 models
GF80 models
* Dimensions (inches/millimeters) are maximums and are to be used only as an aid in designing clearance for the lter.
Actual production dimensions may vary somewhat from those shown.
GF40 models
Pipe Size NPT Model ISO 7-1 Model
1/2" GF40-1-44 GF40M-1-44
3/4" GF60-1-66 GF60M-1-66
1" GF60-1-88 GF60M-1-88
1-1/4" GF80-1-1010 GF80M-1-1010
1-1/2" GF80-1-1212 GF80M-1-1212
2" GF80-1-1616 GF80M-1-1616
Maxitrol lters are suitable for application in natural, manu-
factured, mixed gases, liqueed petroleum gases and LP gas-air
mixture piping systems.
Changes to the NFPA (National Fire Protection Association) 86
Standard require a gas lter or strainer be installed in the fuel gas
supply line, on new oven and furnace installations.
The lters are tested according to DIN 3386 and have
DIN/DVGW approval. The lters are approved according to Eu-
ropean Gas Appliance Directive 90/396/EG, Pressure Equipment
Directive 97/23/E, the Russian GOST, and the Hungarian MBVTI
requirements. Filters with NPT threads are not covered by Euro-
pean certication.
Unique lter matting effectively separates dust. The matting has
an extremely high capacity for accumulated dust due to its wide
ltering surface and depth effect. The material will not allow par-
ticulate inltration over 0.05mm (50 microns). The inserts are quick
and easy to replace.
The lter housing's compact size allows for easy
original equipment installation or retrotting.
Specications
• Housing's are made of durable cast aluminum
• Filter matting consists of polypropylene impregnated eece
• Rp or Rc thread (parallel or taper) dimensions according to
ISO 7-1. NPT thread according to ANSI.
• Maximum operating inlet pressure: 15 psi (1 bar)
• Ambient temperature limit: 175° F (80° C)
Gas Filters
½", ¾", 1", 1¼", 1½", 2" NPT or ISO 7-1
and for other applications such as air

2
Installation and Service
Maxitrol lters are suitable for multipoise mounting.
(Preferably with the lid facing down or to the side.) In-
stall the lter properly with gas owing as indicated by
the arrow on the casting. It is also important to leave
sufcient space above the cover to allow for removal
in order to change the lter insert.
Frequency of lter insert maintenance is depen-
dent upon both the maximum operating pressure of
your equipment application, and the associated pres-
sure drop at the lter. Although, it is recommended
that the lter insert be replaced at least once a year.
See the adjoining pressure drop chart.
Shut off all gas before servicing the lter insert.
When loosening the screws secure the cover, proceed
slowly in case of any residual gas pressure. Remove
the cover and withdraw the lter insert.
place the lter insert so that it abuts correctly in rela-
tion to the anges and base of the housing. The lter
insert should not extend into the area between the
o-ring and cover - slightly bend down the corners of
the matting to prevent o-ring obstruction. Replace the
cover and tighten the screws.
Check carefully for gas leaks immediately after the
lter has been installed or serviced and the gas turned
on. Do this before attempting to operate the appliance
or other gas-red device. Use a rich liquid soap solu-
tion or other accepted leak tester on the area between
the cover and housing, and at the pipe connections.
Never use if leakage is detected.
Pressure Drop Curves (0.64 sp gr gas)
Filter Replacement Material
Replacement lter matting material is available.
GF40 models - part number 101706-1
GF60 models - part number 101706-2
GF80 models - part number 101706-3
Pipe Size NPT Model ISO 7-1 Model
1/2" GF40-1-44 GF40M-1-44
3/4" GF60-1-66 GF60M-1-66
1" GF60-1-88 GF60M-1-88
1-1/4" GF80-1-1010 GF80M-1-1010
1-1/2" GF80-1-1212 GF80M-1-1212
2" GF80-1-1616 GF80M-1-1616
10 30 100 1000 2000
.3
1
10
100
3 (m3/hr)
Volumetric Flow Rate
100 (cfh) 1000 10000 100000
0.1
1
10
100
(inches W.C.)
(mbar)
Pressure Drop (rP)
GF40-1-44
GF60-1-66
FG60-1-88
GF80-1-1010
GF80-1-1212
GF80-1-1616
Replace the lter insert with the side imprinted
'Austritt' (outlet) facing the outlet. Inspect the o-ring
and replace if necessary. To ensure an effective seal,