Clack Control Valves

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.

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.

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.

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.

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.

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".

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.