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Rated capacity*
Amount of high capacity resin (lbs/cu. ft)
Resin tank nominal size (in., dia. x height)
Service flow rate (gpm)
Water supply maximum hardness (gpg)
Water supply maximum clear water iron (ppm)**
Water pressure limits (min.-max. psi)
Pressure drop at rated service flow (psig)
Water temperature maximum (°F)
Water supply minimum flow rate (gpm)
Regeneration cycle flow rates (gpm)
Fill (flow to brine tank)
Brining
Brine Rinse
(flow to drain)
Backwash
Fast Rinse
These systems conform to WQA S-100-98 for the specific capacity claims as verified and substantiated by test data.
* Testing was performed using pellet grade sodium chloride as the regenerant salt.
** Extent of iron removal may vary with conditions. Use of Diamond Crystal® Red•Out® or Super Iron Out® will improve iron removal.
Refer to Cleaning Iron Out of the Water Softening System section.
29–1/2
SPECIFICATIONS/DIMENSIONS
GNSF18
33/.64
10 x 21
25
3
20-125
15
120
3
.3
.24
.14
1.8
1.8
GNSF18
11–1/2
3–3/8
INLET-OUTLET
21–1/2
18–5/8
22–1/4
GXSF27
GNSF35
(see rating label on water softener)
36.4/.7
48.4/.93
8 x 40
9 x 40
(see rating label on water softener)
100
100
5
6
20-125
20-125
15
15
120
120
3
3
.3
.3
.19
.20
.12
.16
1.8
2.0
1.8
2.0
11–1/2
GXSF27, GXSF39
& GNSF35
INLET-OUTLET
18–1/4
48–3/4
41–1/4
GXSF39
52.5/1
9 x 40
100
8
20-125
15
120
3
.3
.20
.16
2.0
2.0
3–3/8
40–1/2
11
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