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Clack Control Valves

Clack Corporation is an OEM-focused water-treatment component manufacturer known for control valves, mineral and retention tanks, brine systems, filter housings, RO accessories, and filtration media.

Its WS control valves are positioned for flexible high-flow softening and filtration applications, so selection should focus on valve platform, programming, stack technology, service parts, and tank compatibility.

Clack Control Valves's position in control valves is defined by product families such as 1" Control Valve, 1,25" Control Valve, 1,5" Control Valve and 2" Control Valve.The portfolio is best understood inside softening, filtration, residential and commercial pretreatment, small plant automation, and packaged treatment trains, where engineers compare the technology route, family boundaries, and duty fit before narrowing to individual models.Representative series on this page include Clack 2572 WS1, Clack 2607 WS1CS and Clack 2610 WS1CI.First-screening cues are valve size, flow capacity, regeneration logic, brine or tank fit, and spare-parts support.

28

Indexed models

6

Product families

0

Subgroups

Model index

Dong san pham va huong dan lua chon

Cach chon Control Valves cua Clack

Phan nay tra loi hai cau hoi: Clack co nhung dong san pham chinh nao, va can so sanh nhung thong so nao truoc khi chon model cu the.

Buoc 1: Chon dong san pham theo ung dung

Cac dong san pham chinh tren trang nay gom 1" Control Valve, 1,25" Control Valve, 1,5" Control Valve, and 2" Control Valve. Hay chon dong phu hop voi muc tieu xu ly, dang thiet bi va dieu kien van hanh truoc, sau do dung chi muc model ben duoi de so sanh thong so cu the.

Buoc 2: Xac nhan model bang thong so chinh

Sau khi chon dong san pham, hay so sanh service flow, regeneration logic, valve size, and controller function. Du an thay the cung phai kiem tra dieu kien lap dat, giao dien va kha nang tuong thich voi he thong hien huu; du an moi can xem them cach van hanh, bao tri va nguon phu tung hoac vat tu.

Product family overview

6 product familys on this page.

1" Control Valve

6 models in this family. Representative models: Clack 2572 WS1, Clack 2607 WS1CS, Clack 2610 WS1CI.

1,25" Control Valve

6 models in this family. Representative models: Clack-2611-WS1.25-L, Clack 2620 WS1.25EI, Clack 2664 WS1.25TC.

1,5" Control Valve

3 models in this family. Representative models: Clack 2608 WS1.5EE, Clack 2619 WS1.5EI, Clack 2667 WS1.5CI.

2" Control Valve

9 models in this family. Representative models: Clack 2678 WS2H, Clack 2811 WS2EE, Clack 2814 WS2EI.

3" Control Valve

1 model in this family. Representative models: Clack 2869 WS3.

1" Control Twin Valve

3 models in this family. Representative models: Clack 2983 WS1EE, Clack 2985 WS1EI, Clack 2987 WS1CI.

Quick Model Index

Fast lookup for 28 indexed products

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Showing 28 of 28 models

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Clack 2572 WS1

1" Control Valve

1. Backwash 1st (upflow): 6 - 12 · 2. Regenerate Draw/Slow Rinse (downflow): 45 - 75 · 3. Backwash 2nd (upflow): 3 - 12

The Clack WS1 is a 1-inch Water Specialist control valve for water softeners and filters, certified to NSF/ANSI 44, 61, and 372.

DetailsPDF

Clack 2607 WS1CS

1" Control Valve

Flow Rate Range: 0.25 – 27 gpm · Cycle 1. Backwash 1st (upflow): 6 - 16 minutes · Cycle 2. Regenerate Draw/Slow Rinse (downflow): 45 - 75 minutes

This Clack WS1CS is a Water Specialist 1” control valve designed for water softening and filtration applications. It features a Noryl valve body, NSF/ANSI 44, 61.

DetailsPDF

Clack 2610 WS1CI

1" Control Valve

Meter Flow Rate Range: 0.95 - 102 lpm · Operating Pressures: 20 - 125 psi (1.4 - 8.6 bar) · Operating Temperatures: 40º - 110º F (4º – 43º C)

The Clack WS1CI is a solid-state microprocessor-controlled valve for water softeners and filters.

DetailsPDF

Clack 2618 WS1TC

1" Control Valve

Service Flow Rate: 27 gpm @ 15 psi drop (includes bypass) · Backwash Flow Rate: 27 gpm @ 25 psi drop (includes bypass) · Drain Line Connection: ¾” or 1” NPT

The Clack WS1TC Water Specialist Control Valve is designed for water softening and filtration applications. This valve features NSF/ANSI 44, 61, and 372 certifications.

DetailsPDF

Clack 2663 WS1EI

1" Control Valve

Selection cues: service flow · connection size · working pressure and control mode

The Clack 2663 WS1EI is an electronic control valve designed for water treatment systems.

DetailsPDF

Clack 2856 WS1EE

1" Control Valve

Service Flow Rate: 27 gpm (at 15 psi drop) · Backwash Flow Rate: 27 gpm (at 25 psi drop) · Flow Rate Range: 0.25 – 27 gpm

The Clack WS1EE is a Water Specialist control valve designed for water softener and filter applications, suitable for tank diameters from 6" to 21".

DetailsPDF

Clack-2611-WS1.25-L

1,25" Control Valve

Flow Rate Range: 0.25 – 34 gpm · Service Pressure: 20 psi – 125 psi · Service Temperature: 40º – 110º F

This Clack Water Specialist control valve is designed for automated water softener and filter applications. It features a Noryl valve body, supports various regenerants.

DetailsPDF

Clack 2620 WS1.25EI

1,25" Control Valve

1. Backwash 1st (upflow): 1-95 minutes · 2. Regenerate Draw/Slow Rinse (downflow): 1-180 minutes · 3. Backwash 2nd (upflow): 1-95 minutes

The Clack WS1.25EI is a Water Specialist control valve for water softeners and filters, featuring solid-state microprocessor control with a front panel display.

DetailsPDF

Clack 2664 WS1.25TC

1,25" Control Valve

Service Flow Rate: 34 gpm (at 15 psi drop) · Backwash Flow Rate: 32 gpm (at 25 psi drop) · Operating Pressures: Minimum 20 psi – Maximum 125 psi

The Clack Water Specialist 1.25” TC Control Valve is designed for water softener and filter applications, featuring NSF/ANSI 44, 61, and 372 certifications.

DetailsPDF

Clack 2665 WS1.25CS

1,25" Control Valve

Flow Rate Range: 0.25 - 34 gpm · Accuracy: ± 5% · Gallon Range: 20 - 50,000 gallons

The Clack WS1.25CS is a control valve designed for water softeners and filters, featuring NSF/ANSI 44, 61, and 372 certifications.

DetailsPDF

Clack 2666 WS1.25CI

1,25" Control Valve

Service Flow Rate (15 psi/1 bar drop): 129 lpm (7.7 m³/h) (34 gpm) · Backwash Flow Rate (25 psi/1.7 bar drop): 121 lpm (7.3 m³/h) (32 gpm) · Flow Rate Range: 0.95 - 129 lpm

The Clack WS1.25CI Water Specialist control valve is designed for water softening and filtration applications.

DetailsPDF

Clack 2867 WS1.25EE

1,25" Control Valve

Service Flow Rate: 34 gpm (at 15 psi drop) · Backwash Flow Rate: 32 gpm (at 25 psi drop) · Flow Rate Range: 0.25 – 34 gpm

The Clack WS1.25EE Water Specialist Control Valve offers a solid-state microprocessor with front panel settings and four regeneration initiation methods.

DetailsPDF

Clack 2608 WS1.5EE

1,5" Control Valve

Service flow rate: 70 gpm (at 15 psi drop, includes meter) · Backwash flow rate: 52 gpm (at 25 psi drop) · Flow Rate Range: 0.5 – 75 GPM

The Clack WS1.5EE is a 1.5-inch meter control valve designed for water softeners and filters up to 30 inches in diameter. It features a lead-free brass valve body.

DetailsPDF

Clack 2619 WS1.5EI

1,5" Control Valve

Service flow rate: 265 lpm (15.9 m³/h) (70 gpm) · Backwash flow rate: 197 lpm (11.8 m³/h) (52 gpm) · Flow Rate Range: 2 - 284 lpm (0.5 - 75 gpm)

This Clack WS1.5EI is a 1.5-inch top mount control valve for mid-size commercial and industrial water softening or filtering applications.

DetailsPDF

Clack 2667 WS1.5CI

1,5" Control Valve

Service flow rate: 265 lpm (15.9 m³/h) (70 gpm) at 1 bar/15 psi drop · Backwash flow rate: 197 lpm (11.8 m³/h) (52 gpm) at 1.7 bar/25 psi drop · Flow Rate Range: 2 - 284 lpm (0.5 - 75 gpm)

This Clack WS1.5CI is a control valve designed for water softeners and filters up to 30 inches in diameter, featuring an epoxy coated lead-free brass body.

DetailsPDF

Clack 2678 WS2H

2" Control Valve

Service Flow Rate: 125 gpm (473 lpm) (28.4 m³/h) @ 15 psi / 1 bar drop (includes meter) · Backwash Flow Rate: 125 gpm (473 lpm) (28.4 m³/h) @ 25 psi / 1.7 bar drop · Flow Rate Range: 1.5 - 125 gpm (5.7 - 473 lpm)

The Clack 2678 WS2H is a 2-inch control valve for water softeners and filters, featuring lead-free brass construction and NSF/ANSI 44, 61, and 372 certifications.

DetailsPDF

Clack 2811 WS2EE

2" Control Valve

Flow Rate Range: 1.5 – 150 gpm · 1. Backwash 1st (upflow): 1-95 minutes · 2. Regenerate Draw/Slow Rinse (downflow): 1-180 minutes

This Clack 2811 WS2EE is a 2-inch top-mount control valve designed for commercial and industrial water treatment applications.

DetailsPDF

Clack 2814 WS2EI

2" Control Valve

Service flow rate: 435 lpm (26.1 m³/h) (115 gpm) at 1 bar/15 psi drop · Backwash flow rate: 303 lpm (18.2 m³/h) (80 gpm) at 1.7 bar/25 psi drop · Flow Rate Range: 5.7 - 568 lpm (1.5 - 150 gpm)

The Clack WS2EI is a 2-inch top-mount control valve designed for commercial and industrial water softening and filtration applications.

DetailsPDF

Clack 2828 WS2CI

2" Control Valve

Service Flow Rate: 435 lpm (26.1 m³/h) (115 gpm) @ 1 bar/15 psi drop · Backwash Flow Rate: 303 lpm (18.2 m³/h) (80 gpm) @ 1.7 bar/25 psi drop · Flow Rate Range: 5.7 - 568 lpm (1.5 - 150 gpm)

The Clack WS2CI is a 2" top-mount control valve for water softeners and filters, featuring NSF/ANSI 44, 61, and 372 certifications. It operates at pressures from 1.4 to 8.

DetailsPDF

Clack 2861 WS2CIQC

2" Control Valve

Service Flow Rate: 473 lpm (28.4 m³/h) (125 gpm) @ 1 bar/15 psi drop · Backwash Flow Rate: 322 lpm (19.3 m³/h) (85 gpm) @ 1.7 bar/25 psi drop · Flow Rate Range: 5.7 - 568 lpm (1.5 - 150 gpm)

The Clack WS2CIQC is a 2-inch control valve for water softeners and filters, featuring a lead-free brass body and NSF/ANSI 44, 61, and 372 certifications.

DetailsPDF

Clack 2862 WS2EIQC

2" Control Valve

Flow Rate Range: 5.7 - 568 lpm (1.5 - 150 gpm) · Drain Line Connection: 1.5” Female NPT · Operating Pressure: 1.4 - 8.6 bar (20 psi - 125 psi)

The Clack 2862 WS2EIQC is a Water Specialist 2-inch electronic control valve for water softener and filter tank applications.

DetailsPDF

Clack 2864 WS2EEQC

2" Control Valve

Flow Rate Range: 1.5 – 150 gpm · Drain Line Connection: 1.5” Female NPT · Accuracy: ± 5%

The Clack 2864 WS2EEQC is a Water Specialist 2-inch control valve designed for commercial and industrial water softeners and filters.

DetailsPDF

Clack 2942 WS2SP

2" Control Valve

Service Flow Rate: 115 gpm @ 15 psi drop (includes meter) · Backwash Flow Rate: 80 gpm @ 25 psi drop · Flow Rate Range: 1.5 – 150 gpm

The Clack WS2SP is a 2-inch Water Specialist control valve for backwash filters and water softeners up to 48-inch diameter tanks.

DetailsPDF

Clack 2943 WS2SPQC

2" Control Valve

Service Flow Rate: 125 gpm @ 15 psi drop · Backwash Flow Rate: 85 gpm @ 25 psi drop · Flow Rate Range: 1.5 – 150 gpm

This Clack Water Specialist 2” SP/QC control valve is designed for water softening and filtering applications with its lead-free brass body.

DetailsPDF

Clack 2869 WS3

3" Control Valve

Service Flow Rate: 250 gpm (946 lpm) (56.8 m³/h) @ 15 psi / 1 bar drop · Backwash Flow Rate: 220 gpm (833 lpm) (50.0 m³/h) @ 25 psi / 1.7 bar drop · Flow Rate Range: 3.5 - 350 gpm (13.3 - 1325 lpm)

This Clack WS3 Water Specialist Control Valve offers advanced automation for water softeners and filters.

DetailsPDF

Clack 2983 WS1EE

1" Control Twin Valve

Selection cues: service flow · connection size · working pressure and control mode

The Clack 2983 WS1EE is an automatic control valve designed for water treatment applications.

DetailsPDF

Clack 2985 WS1EI

1" Control Twin Valve

Flow Rate Range: 0.95 - 102 lpm · Operating Pressures: 1.4 - 8.6 bar (20 psi – 125 psi) · Operating Temperatures: 4º - 43ºC (40º – 110º F)

This is a Clack WS1EI twin alternating control valve for water softener and filter applications up to 21" diameter.

DetailsPDF

Clack 2987 WS1CI

1" Control Twin Valve

Flow Rate Range: 0.95 - 102 lpm · Operating Pressures: 20 - 125 psi (1.4 - 8.6 bar) · Operating Temperatures: 40º - 110º F (4º – 43º C)

This Clack WS1CI is a twin alternating control valve designed for water softeners and filters, featuring Noryl construction and NSF/ANSI 44, 61, and 372 certifications.

DetailsPDF

Brand Products & Technical Documents

28 product profiles with integrated document access

Each card keeps the curated model introduction and combines the readable datasheet page, OEM PDF, and official source. Product understanding and document access now share one card set.

1" Control Valve

6 product profiles

Control Valves
Clack logo

Product profile

Clack 2572 WS1

The Clack WS1 is a 1-inch Water Specialist control valve for water softeners and filters, certified to NSF/ANSI 44, 61, and 372.

Control Valves
Clack logo

Product profile

Clack 2607 WS1CS

This Clack WS1CS is a Water Specialist 1” control valve designed for water softening and filtration applications. It features a Noryl valve body, NSF/ANSI 44, 61.

Control Valves
Clack logo

Product profile

Clack 2610 WS1CI

The Clack WS1CI is a solid-state microprocessor-controlled valve for water softeners and filters.

Control Valves
Clack logo

Product profile

Clack 2618 WS1TC

The Clack WS1TC Water Specialist Control Valve is designed for water softening and filtration applications. This valve features NSF/ANSI 44, 61, and 372 certifications.

Control Valves
Clack logo

Product profile

Clack 2663 WS1EI

The Clack 2663 WS1EI is an electronic control valve designed for water treatment systems.

Control Valves
Clack logo

Product profile

Clack 2856 WS1EE

The Clack WS1EE is a Water Specialist control valve designed for water softener and filter applications, suitable for tank diameters from 6" to 21".

1,25" Control Valve

6 product profiles

Control Valves
Clack logo

Product profile

Clack-2611-WS1.25-L

This Clack Water Specialist control valve is designed for automated water softener and filter applications. It features a Noryl valve body, supports various regenerants.

Control Valves
Clack logo

Product profile

Clack 2620 WS1.25EI

The Clack WS1.25EI is a Water Specialist control valve for water softeners and filters, featuring solid-state microprocessor control with a front panel display.

Control Valves
Clack logo

Product profile

Clack 2664 WS1.25TC

The Clack Water Specialist 1.25” TC Control Valve is designed for water softener and filter applications, featuring NSF/ANSI 44, 61, and 372 certifications.

Control Valves
Clack logo

Product profile

Clack 2665 WS1.25CS

The Clack WS1.25CS is a control valve designed for water softeners and filters, featuring NSF/ANSI 44, 61, and 372 certifications.

Control Valves
Clack logo

Product profile

Clack 2666 WS1.25CI

The Clack WS1.25CI Water Specialist control valve is designed for water softening and filtration applications.

Control Valves
Clack logo

Product profile

Clack 2867 WS1.25EE

The Clack WS1.25EE Water Specialist Control Valve offers a solid-state microprocessor with front panel settings and four regeneration initiation methods.

1,5" Control Valve

3 product profiles

Control Valves
Clack logo

Product profile

Clack 2608 WS1.5EE

The Clack WS1.5EE is a 1.5-inch meter control valve designed for water softeners and filters up to 30 inches in diameter. It features a lead-free brass valve body.

Control Valves
Clack logo

Product profile

Clack 2619 WS1.5EI

This Clack WS1.5EI is a 1.5-inch top mount control valve for mid-size commercial and industrial water softening or filtering applications.

Control Valves
Clack logo

Product profile

Clack 2667 WS1.5CI

This Clack WS1.5CI is a control valve designed for water softeners and filters up to 30 inches in diameter, featuring an epoxy coated lead-free brass body.

2" Control Valve

9 product profiles

Control Valves
Clack logo

Product profile

Clack 2678 WS2H

The Clack 2678 WS2H is a 2-inch control valve for water softeners and filters, featuring lead-free brass construction and NSF/ANSI 44, 61, and 372 certifications.

Control Valves
Clack logo

Product profile

Clack 2811 WS2EE

This Clack 2811 WS2EE is a 2-inch top-mount control valve designed for commercial and industrial water treatment applications.

Control Valves
Clack logo

Product profile

Clack 2814 WS2EI

The Clack WS2EI is a 2-inch top-mount control valve designed for commercial and industrial water softening and filtration applications.

Control Valves
Clack logo

Product profile

Clack 2828 WS2CI

The Clack WS2CI is a 2" top-mount control valve for water softeners and filters, featuring NSF/ANSI 44, 61, and 372 certifications. It operates at pressures from 1.4 to 8.

Control Valves
Clack logo

Product profile

Clack 2861 WS2CIQC

The Clack WS2CIQC is a 2-inch control valve for water softeners and filters, featuring a lead-free brass body and NSF/ANSI 44, 61, and 372 certifications.

Control Valves
Clack logo

Product profile

Clack 2862 WS2EIQC

The Clack 2862 WS2EIQC is a Water Specialist 2-inch electronic control valve for water softener and filter tank applications.

Show remaining 2" Control Valve profiles (3)
Control Valves
Clack logo

Product profile

Clack 2864 WS2EEQC

The Clack 2864 WS2EEQC is a Water Specialist 2-inch control valve designed for commercial and industrial water softeners and filters.

Control Valves
Clack logo

Product profile

Clack 2942 WS2SP

The Clack WS2SP is a 2-inch Water Specialist control valve for backwash filters and water softeners up to 48-inch diameter tanks.

Control Valves
Clack logo

Product profile

Clack 2943 WS2SPQC

This Clack Water Specialist 2” SP/QC control valve is designed for water softening and filtering applications with its lead-free brass body.

3" Control Valve

1 product profile

Control Valves
Clack logo

Product profile

Clack 2869 WS3

This Clack WS3 Water Specialist Control Valve offers advanced automation for water softeners and filters.

1" Control Twin Valve

3 product profiles

Control Valves
Clack logo

Product profile

Clack 2983 WS1EE

The Clack 2983 WS1EE is an automatic control valve designed for water treatment applications.

Control Valves
Clack logo

Product profile

Clack 2985 WS1EI

This is a Clack WS1EI twin alternating control valve for water softener and filter applications up to 21" diameter.

Control Valves
Clack logo

Product profile

Clack 2987 WS1CI

This Clack WS1CI is a twin alternating control valve designed for water softeners and filters, featuring Noryl construction and NSF/ANSI 44, 61, and 372 certifications.

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