← All parts indexes by model number

C-Series valves are identified by the part number printed on the component itself rather than by a system model name. Those numbers begin with CL and are the reliable way to order a replacement — the board version, in particular, is printed directly on the board and matters, because boards of different versions are not interchangeable even where they physically fit the same housing.

This page lists our C-Series stock by that CL part number. Read the version number on your existing board or piston before ordering; where a component has been superseded, the number on the part you are removing is still the correct starting point.

The most frequently replaced C-Series components are control boards, drive motors, piston assemblies and seal kits. A valve that powers up but will not advance through its cycle is usually a drive motor. A valve that shows nothing at all on the display is usually the board or its transformer.

Complete C-Series systems are sold on request rather than directly through the site. The parts listed here are available to order as normal.

C-Series valve parts

75 items listed under this model.

• —1-1/4 inch PVC straight male adapter for control valves — CL12S-PVC, C-Series 1-1/4 PVC MIPT Adap, Straight, V3007-05$29.71
• —1-inch John Guest C-Series Adapter for Control Valves — CL10-JG, C-Series John Guest Adapter, 1", V3007-17$56.55
• —1-inch PVC male adapter elbows, pack of 2 — CL10-PVC, C-Series 1" PVC M Adap Ells (2), V3007$25.40
• —1-inch PVC male adapter, pack of 2 — CL10S-PVC, C-Series 1" PVC M Adapter (2), V3007-04$28.82
• —12" x 35" Mineral Tank with Charcoal Base — CL1235-CLB, Min Tnk, 12" x 35" Char L/base, Nelsen, C81235C01E01$198.01
• —12-foot red system communication cord for C-Series valves — CL-COM-12, WS1-2EE System Comm Cord 12' Red, V3475-12$89.00
• —3/4" Drain Elbow Non-silencer for Valve — CL3158-02, Drain Elbow, 3/4" Non-silencer, V3158-02$20.34
• —3/4-inch Brass Sweat Adapter for Control Valves — CL07-CT, C-Series 3/4 Brass Sweat Adap (2), V3007-03LF$38.43
• —30-inch WS2/2H/3 Injector Assembly for C-Series Valve — CLINJ-2D, WS2/2H/3 Injector Assembly 30", V3010-2D$59.36
• —36-inch Injector Assembly for Nelsen C-Series Valves — CLINJ-2E, NWS2/WS2/2H/2HF/3 Injector Assembly 36", V3010-2E$49.93
• —60-inch WS2/2H/3 Injector Assembly for C-Series Valves — WS2/2H/3 Injector Assembly 60"$84.25
• —AIO control flow piston assembly for water systems — CL3011-AIO-CFT, AIO Control Flow Piston Assembly, CL3011-AIO-CFT$61.83
• —Brass pipe adapters 1-1/4 to 1-1/2 inches, set of 2 — CL1215-CT, 1-1/4 x 1-1/2 Brass Adapters, Set of 2, V3007-09LF$99.22
• —Brass sweat adapter for C-Series valves, size 2 inches — CL10-CT, C-Series Brass Sweat Adap (2), V3007-02$43.77
• —Brine elbow assembly with RFC-Parker for C-Series valves — CL4144-01, WS1 Brine Elbow Assy w/ RFC-Parker, V4144-01$25.92
• —C-Series 1.5-inch valve plug for V3010-15Z valve — CLINJ-15-PLUG, C-Series Plug, 1.5" Valve, V3010-15Z$26.10
• —C-Series 110-120V Transformer for Valve Systems — CL3186-06, C-Series Transformer 110v-120v, V3186-06$39.17
• —C-Series 110-120V Transformer for Valve Systems — CL3186-06, C-Series Transformer 110v-120v, V3186-06$39.17
• —C-Series 5/8-inch Poly Tube Insert for Valves — CL3192-TUBEINSERT, C-Series Poly Tube Insert, 5/8, PKP10TS8-BULK$10.11
• —C-Series Black Injector for 14" DF/18" UF systems — CLINJ-15D, C-Series Injector, Black, 14" DF/18" UF, V3010-15D$46.10
• —C-Series Black Injector for 16" DF/21" UF systems — CLINJ-15E, C-Series Injector, Black, 16" DF/21" UF, V3010-15E$46.10
• —C-Series Bypass Assembly for Control Valves — CL-BYPASS, C-Series Bypass Assembly, V3006$49.02
• —C-Series Downflow Piston Assm, V3011 (CL3011)$30.51
• —C-Series Drive Motor for Valve Systems — CL3107-01, C-Series Drive Motor, V3107-01$33.78
• —C-Series In/Out Head w/Vent Tap, D1400 (C1190)$62.62
• —C-Series In/Out Mineral Tank Head with Fill Port — C1190-FP, C-Series In/Out Head W/Fill Port, W/Wrn,$95.80
• —C-Series Injector Assembly - K Lt Green$22.00
• —C-Series Injector Assembly Z Plug for Valve — CLINJ-PLUG, C-Series Injector Assembly - Z Plug, V3010-1Z$18.85
• —C-Series Injector, Black, 13" DF/16" UF$117.89
• —C-Series Long PVC Elbow Set of 2 — CL10-90-PVC, C-Series Long Elbow (set of 2), V3191-01$33.14
• —C-Series Pwr Cord Trans$34.31
• —C-Series Refill Port O-Ring, V3163 (CL3163)$8.12
• —C-Series Regenerant Piston, V3174 (CL3174)$26.50
• —C-Series Spacer Stack Assm, V3005-02 (CL3005)$64.32
• —C-Series Split Ring, V3150 (CL3150)$8.15
• —C-Series Top Basket 1.050 Inch for Mineral Tanks — TDB1050-FMC, C-Series Top Bskt 1.050", FM, D1225-03$30.54
• —C-Series Valve Control Board for Water Treatment Systems — CL3108CS-03BOARD, C-Series CS Board, V3108CS-05BOARD$139.25
• —C-Series Valve Injector Assembly, Light Blue — CLINJ-J, C-Series Injector Assembly - J Lt Blue, V3010-1J$22.00
• —C-Series WS1 Meter Assembly, V3003-05 (CL3003)$110.87
• —C-Series WS1 Nut 3/4" Drain Elbow, V3192 (CL3192)$10.08
• —C-Series WS1/1.25 Valve PC Board with Battery — CL3108-11BOARD, C-Series WS1/1.25 PC Board w/Battery, V3108-13BOARD$122.02
• —C-Series Yellow Injector for 18" DF and 24" UF membranes — CLINJ-15F, C-Series Injector, Yellow, 18" DF/24" UF, V3010-15F$46.10
• —C-Series valve refill port plug — CL3195-01, C-Series Refill Port Plug, V3195-01$24.01
• —C-Series, O-Ring 215 Adptr Fitting Assm, V3105 (CL3105)$8.12
• —CL3009, Nelsen WS1 Micro Switch Kit, V3009$34.50
• —CL3009, Nelsen WS1 Micro Switch Kit, V3009$34.50
• —Control board for C-Series valve, version 519.8 — CL3408-EE, WS EE PC Board, ver: 519.8, V3408EE-4TO5BRD$139.25
• —Control system board for C-Series valve systems — WS2H/WS3 PS System Board$450.00
• —DLFC Retainer Assembly for C-Series Valve — CL3159-01, DLFC Retainer Assembly, V3159-01$19.07
• —Drive Cap Assembly, V3004 (CL3004)$41.00
• —Front cover assembly for C-Series valve model WS1EE — CL3175EE-01, WS1EE Front Cover Assembly, V3175EE-01$33.67
• —Green C-Series Injector for 21" DF/30" UF systems — CLINJ-15G, C-Series Injector, Green, 21"DF/30"UF, V3010-15G$46.10
• —Injection screen for Vesta and C-Series valves — CLINJ-SCREEN, NWS, VESTA and C-Series Inj Screen, V3177-01$4.08
• —Injector assembly 21-inch for C-Series valve — CLINJ-2B, WS2/2H/3 Injector Assembly 21", V3010-2B$49.93
• —Injector assembly 42-inch for C-Series valves — CLINJ-2F, WS2/2H/3 Injector Assembly 42", V3010-2F$49.93
• —Injector assembly for 24-inch tank, C-Series valve parts — CLINJ-2C, NWS2/WS2/2H/2HF/3 Injector Assy 24" Tank, V3010-2C$49.93
• —John Guest 3/4-inch Elbow Adapter for C-Series — CL07-JG, C-Series John Guest Elbow Adapter, 3/4, V3007-15$45.47
• —Nelsen C-Series Injector Label B for Valve — CL-INJ-B-LABEL, Nelsen Injector Label - B, V3116-09$42.60
• —Nelsen C-Series Injector Valve Label — CL-INJ-C-LABEL, Nelsen Injector Label - C, V3116-01$33.18
• —Nelsen O-ring, Min Tank, 1" & 1-1/4" Vlv, V3180 (CL3180)$19.54
• —Nelsen Piston Assm Dwn, 1-1/4" & 1-1/2", V3407 (CL3407)$66.30
• —Nelsen Remote Mtr Turbine Assy w/15' Cord, V3221 (CL3221)$124.45
• —Nelsen Seal and Spacer Stack for 1.25" and 1.5" valves — CL3430-01, Nelsen Seal & Spacer Stack, 1.25" and 1.5, V3430-01$80.81
• —Nelsen WS2 Brine Piston Assembly, V3726 (CL3726)$45.65
• —Nelsen WS2 Downflow Piston Assembly, V3725 (CL3725)$76.55
• —Nelsen WS2 Stack Assembly, V3729 (CL3729)$92.41
• —Orange C-Series Injector for 24" DF Tank — CLINJ-15H, C-Series Injector, Orange, 24" DF Tank, V3010-15H$55.54
• —PVC elbow adapter, 3/4 inch by 1 inch, pack of 2 — CL0710-PVC, C-Series PVC Elbow Adap, 3/4x1 (2), V3007-01$25.40
• —Twin kit for 12 to 21 inch C-Series tanks — CL-TWINKIT-1221, C-Series Twin Kit, 12"-21" Tanks, V4052-01$75.48
• —Universal wrench for C-Series valves — CL-WRENCH, C-Series Universal Wrench, V3193-02$26.02
• —WS1 Piston Upflow Assembly for C-Series Valve — CL3011-01, WS1 Piston Upflow Assembly, V3011-01$47.27
• —WS2/2H Injector Assembly 16-inch for C-Series Valve — CLINJ-2U, WS2/2H Injector Assembly 16", V3010-2U-15E$63.03
• —Weather-tight valve cover for C-Series commercial valves — CL-COVER-A, C-Series Alm Weather Tight Valve Cover, V3175WC-A$32.53
• —White weather-tight valve cover for C-Series valves — CL-COVER-W, C-Series Wht Weather Tight Vlv Cover, V3175WC-W$32.53
• —Wrench for C-Series valve stack and spacer removal — CL-STACK-WRENCH, Wrench for C-Series Stack/Spacer Removal, V3022$38.32

Ordering notes for C-Series parts

Read the version suffix as well as the CL number, particularly on boards, and order against the component rather than against the system it came out of. Complete C-Series systems are quoted rather than sold directly; the parts listed above are available to order normally. United States shipping is included.

Other parts indexes

• Fleck Valve Parts by Model Number
• Autotrol Valve Parts by Model Number
• Pentek and Pentair Filter Parts by Model Number
• Stenner Pump Parts by Model Number
• Tank and Air-Injection Parts by Model Number
• UV System Lamps and Sleeves by Model Number

Manuals for this equipment

Installation and programming manuals are available as free PDF downloads: Nelsen and C-Series manuals.