2025 Nelsen Corporation Catalog - Catalog - Page 81
Nelsen Water Solutions C-Series 1-1/4" Filter Systems 3
Nelsen C-Series 1-1/4" Backwash Only Filters (Less Filter Media)
Filtration Equipment
Features include Nelsen C-Series 1-1/4" 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.
CAFB12-14
14" x 65" 1-1/4" Backwash Only Filter
CAFB12-16
16" x 65" 1-1/4" Backwash Only Filter
CAFB12-18
18" x 65" 1-1/4" Backwash Only Filter
CAFB12-21
21" x 62" 1-1/4" Backwash Only Filter
CONTROL VALVE FEATURES
• Solid state microprocessor with easy access front panel settings
• Days override feature; 1 – 28 days available
• Backwash ability to 21" diameter tanks
• Stores system configuration and operation data in nonvolatile memory
• Coin Cell Lithium battery back-up with an 8 hour carry over
• Level VI 15-volt output DC power supply provides safe and easy installation
• Patented one piece expanding seal spacer stack assembly U.S. Patent 6,402,944
• Patented linearly reciprocating piston operation U.S. Patent 6,444,127
• Control valve design provides optimum service and backwash rates
Control Valve Certified to
NSF/ANSI 61 and 372.
C-SERIES 1.25" CONTROL
Mineral Tank Size
14 x 65
16 x 65
18 x 65
21 x 62
Maximum Flow Rate, System - 34 GPM
Maximum Backwash Rate - 32 GPM
FLOW RATES* - Gallons Per Minute
Service
BKW
Service
BKW
Service
BKW
Service
BKW
Greensand Plus
6.5
13.0
8.5
15.0
10.5
20.0
14.5
25.0
Birm
4.0
10.0
4.5
13.0
7.0
15.0
9.5
25.0
Activated Carbon
4.0
10.0
4.5
13.0
7.0
15.0
9.5
25.0
Calcite/Corosex
5.0
10.0
7.0
15.0
8.5
20.0
12.0
25.0
Multi-Media Depth
3.5
15.0
4.0
20.0
5.0
25.0
7.0
35.0
Filter-AG Plus
10.0
15.0
14.0
20.0
17.0
25.0
24.0
35.0
Filter Sand
3.5
15.0
4.0
20.0
5.0
25.0
7.0
35.0
Katalox
8.5
15.0
11.0
15.0
14.0
25.0
19.0
30.0
SYSTEM SPECIFICATIONS
Mineral Tank Size
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"
Drain Pipe Size
3/4" and 1"
3/4" and 1"
3/4" and 1"
3/4" and 1"
1.32" or 32mm
1.32" or 32mm
1.32" or 32mm
1.32" or 32mm
Distributor Pilot
Tank Thread
4" - 8
4" - 8
4" - 8
4" - 8
Overall Height, Inches
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.
Call Nelsen Toll-Free from Anywhere in the U.S. - 800.362.9686
All prices and products subject to change without notice. ©Nelsen Corporation
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