2025 Nelsen Corporation Catalog - Catalog - Page 80
3 Nelsen Water Solutions C-Series Filter Systems
Filtration Equipment
Nelsen C-Series 1" Backwash Only Filters (Less Filter Media)
Features include Nelsen C-Series 1" 3-cycle backwash filter valve, bypass valve, polyglass mineral tank,
basket distributor (stack distributor or hub and laterals on larger tanks) and gravel bed. External flow
control included on 12-inch units and larger.
Choose plumbing connections separately on Page 1-13.
CAFB-10
10" x 44" Backwash Only Filter
CAFB-10T
10" x 54" Backwash Only Filter
CAFB-12
12" x 48" Backwash Only Filter
CAFB-13
13" x 54" Backwash Only Filter
CAFB-14
14" x 65" Backwash Only Filter
CAFB-16
16" x 65" Backwash Only Filter
CAFB-18
18" x 65" Backwash Only Filter
CAFB-21
21" x 62" Backwash Only Filter
CONTROL VALVE FEATURES
• Backwash ability to 21" diameter tanks
• Solid state microprocessor with easy access front panel settings
• Double backwash feature offers efficiency and optimum regeneration and cleaning ability
• Days between regeneration feature: 1–99 days standard; 7-day optional
• Stores system configuration and operation data in nonvolatile memory
Control Valve Certified to
NSF/ANSI 61 and 372.
C-SERIES 1" CONTROL
Mineral Tank Size
10 x 44
10 x 54
12 x 48
13 x 54
14 x 65
16 x 65
18 x 65
21 x 62
Maximum Flow Rate, System - 27 GPM
Maximum Backwash Rate - 27 GPM
FLOW RATES* - Gallons Per Minute
SVC BKW SVC BKW SVC BKW SVC BKW SVC BKW SVC BKW SVC BKW SVC BKW
Greensand Plus
3.0
6.5
3.0
6.5
4.0 10.0 5.5 13.0
6.5 13.0
8.5 15.0 10.5 20.0 14.5 25.0
Birm
2.0
5.3 2.0
5.3
3.0
7.5 3.5 10.0
4.0 10.0
4.5 13.0
7.0 15.0
9.5 25.0
Activated Carbon
2.0
5.3 2.0
5.3
3.0
7.5 3.5 10.0
4.0 10.0
4.5 13.0
7.0 15.0
9.5 25.0
Calcite/Corosex
2.5
7.5
2.5
7.5
4.0 10.0 4.5 10.0 5.0 10.0
7.0 15.0
8.5 20.0 12.0 25.0
Multi-Media Depth
1.5
7.5
1.5
7.5
2.5 10.0 3.0 15.0
3.5 15.0
4.0 20.0 5.0 25.0
X
X
Filter-AG Plus
5.5
7.5
5.5
7.5 8.0 10.0 9.0 15.0 10.0 15.0 14.0 20.0 17.0 25.0
X
X
Filter Sand
1.5
7.5
1.5
7.5
2.5 10.0 3.0 15.0
3.5 15.0
4.0 20.0 5.0 25.0
X
X
Katalox
4.5
7.5
4.5
7.5
6.5 10.0 7.5 10.0
8.5 15.0 11.0 15.0 14.0 25.0
X
X
SYSTEM SPECIFICATIONS
Mineral Tank Size
10 x 44
10 x 54
12 x 48
13 x 54
14 x 65
16 x 65
18 x 65
21 x 62
Pipe Size
3/4" and 1" 3/4" and 1" 3/4" and 1" 3/4" and 1" 3/4" and 1" 3/4" and 1" 3/4" and 1" 3/4" and 1"
Drain Pipe Size
3/4" and 1" 3/4" and 1" 3/4" and 1" 3/4" and 1" 3/4" and 1" 3/4" and 1" 3/4" and 1" 3/4" and 1"
Distributor Pilot
1.05"
1.05"
1.05"
1.05"
1.05"
1.05"
1.05"
1.05"
Tank Thread
2.5" - 8
2.5" - 8
2.5" - 8
2.5" - 8
4" - 8
4" - 8
4" - 8
4" - 8
Overall Height, Inches
50.5
61
54.7
60.8
73
74
74
74
*NOTE - due to varying water conditions, water pressures, and assembly materials, service flow rate should be used as a guideline only.
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For more information visit – NelsenCorp.com • NelsenWaterSolutions.com • VESTAwater.com
All prices and products subject to change without notice. ©Nelsen Corporation
