NSF Product and Service Listings

These NSF Official Listings are current as of Friday, May 9, 2025 at 12:15 a.m. Eastern Time. Please contact NSF to confirm the status of any Listing, report errors, or make suggestions.

Alert: NSF is concerned about fraudulent downloading and manipulation of website text. Always confirm this information by clicking on the below link for the most accurate information: http://info.nsf.org/Certified/DWTU/Listings.asp?CompanyName=clack&

Note: Certain claims, such as Arsenic (Pentavalent) Reduction, appear as active links, allowing you to access additional information regarding the specific contaminants.


NSF/ANSI 42
Drinking Water Treatment Units - Aesthetic Effects


 
Clack Corporation 
4462 Duraform Lane
Windsor, WI 53598-9716 
United States 
608-846-3010
Visit this company's website

Facility : Windsor, WI

 
           

COMPONENTS: Filter Cartridges[1] [Pb]
HydroCure® Melt Blown Filters MBAABBBBCCCC[2]  
HydroCure® Melt Blown Filters DGXXXXYYYYZZZZZZ[3]  
C3400-CTOXX[4]  
C3400-MBXXYY[5]  

   
[1] Conforms to material requirements only.
[2] AA   - Nominal micron size 01, 03, 05, 10, 20, 25, or 50.
    BBBB - Nominal length ranging from 0988 to 5000 (i.e., 10" to 50").
    CCCC - A unique sequential number for computer tracking purposes. This number changes 
           whenever a different boxed quantity is specified or if a customer requests an 
           additional label on the outside of the box.
[3] XXXX   - Nominal micron size of the outer and inner areas of the filter. The outside 
             of the cartridge has a nominal micron size of 25 reducing to 01, 05, or 10; 
             or a nominal micron size of 50 reducing to 01, 05, 10, or 25; or a nominal 
             micron size of 75 reducing to 25.
    YYYY   - Nominal length ranging from 0988 to 2000 (i.e., 10" to 20").
    ZZZZZZ - A unique sequential number for computer tracking purposes. This number 
             changes whenever a different boxed quantity is specified or if a customer 
             requests an additional label on the outside of the box.
[4] XX - Nominal micron size 5 to 20.
[5] XX - Nominal outer micron size 25 to 50
    YY - Nominal inner micron size 1 to 5
[Pb] Product also evaluated and determined to possess weighted average lead content of
     <=0.25% and complies with lead content requirements for “lead free” plumbing as defined
     by California, Vermont, Maryland, and Louisiana state laws and the U.S. Safe Drinking
     Water Act.

COMPONENTS: Filter Housings, Point-of-Entry[6] [Pb]
Cartridge Tank Asy - C3100X  

   
[6] Conforms to material and structural integrity requirements.
[Pb] Product also evaluated and determined to possess weighted average lead content of
     <=0.25% and complies with lead content requirements for “lead free” plumbing as defined
     by California, Vermont, Maryland, and Louisiana state laws and the U.S. Safe Drinking
     Water Act.


NSF/ANSI 44
Cation Exchange Water Softeners



 
Clack Corporation 
4462 Duraform Lane
Windsor, WI 53598-9716 
United States 
608-846-3010
Visit this company's website

Facility : Windsor, WI

             

COMPONENTS: Fittings[1] [Pb] [POE]
3/4" Brass Sweat Assembly LF - V3007-03LF[2]        
3/4" John Guest QC Elbow Assembly - V3007-15[2]        
3/4" John Guest QC Straight Assembly - V3007-19[2]        
3/4" Plastic Male BSPT Assembly - V3007-14[2]        
3/4" Plastic Male NPT Assembly - V3007-18[2]        
3/4" Sharkbite® Assembly - V3007-12LF[2]        
3/4" x 1" PVC Solvent Elbow Assembly - V3007-01[2]        
1" Brass Sweat Assembly LF - V3007-02LF[2]        
1" John Guest QC Elbow Assembly - V3007-20[2]        
1" John Guest Straight QC Assembly - V3007-17[2]        
1" Meter Assembly - V3039[2]        
1" Meter Assembly - V3039-15[2]        
1" Plastic Male BSPT Assembly - V3007-06[2]        
1" Plastic Male NPT Assembly - V3007-04[2]        
1" PVC Male BSPT Elbow Assembly - V3007-16[2]        
1" PVC Male NPT Elbow Assembly - V3007[2]        
1" Sharkbite® Assembly - V3007-13LF[2]        
1.25" Plastic Male BSPT Assembly - V3007-08[2]        
1.25" Plastic Male NPT Assembly - V3007-05[2]        
1.25" & 1.5" Brass Sweat Assembly LF - V3007-09LF[2]        
1.25" & 1.5" PVC Solvent Assembly - V3007-07[2]        
Break Away Fitting Kit - V3007-21        
Inline Vertical Adapter Fitting - V3467[2]        
Vertical Adapter Assembly - V3191-01[2]        

   
[1] Conforms to material and structural integrity requirements.
[2] Certified for use with tanks 9 x 48 and greater.
[Pb] Product also evaluated and determined to possess weighted average lead content of
     <=0.25% and complies with lead content requirements for “lead free” plumbing as defined
     by California, Vermont, Maryland, and Louisiana state laws and the U.S. Safe Drinking
     Water Act.
[POE] Product conforms to NSF/ANSI/CAN 61 health effects requirements.

COMPONENTS: Tanks, Water Softener[1] [Pb] [POE]
8 x 35        
8 x 44        
9 x 18        
9 x 35        
9 x 44 BTM PLT        
9 x 48        
9 x 48 BTM PLT        
10 X 13        
10 x 18        
10 x 35        
10 x 40        
10 x 40 BTM PLT        
10 x 44        
10 x 44 BTM PLT        
10 x 47        
10 x 54        
10 x 54 BTM & MID PLT        
10 x 54 BTM PLT        
10 x 54 DH BTM PLT        
10 x 54 DH MID & BTM PLT        
10 x 54 DOME HOLE        
12 x 35        
12 x 52        
12 x 52 BTM & MID PLT        
12 x 52 BTM PLT        
12 x 52 DH BTM PLT        
12 x 52 DH MID & BTM PLT        
12 x 52 DOME HOLE        
13 x 54        
13 x 54 BTM & MID PLT        
13 x 54 BTM PLT        
13 x 54 DH BTM PLT        
13 x 54 DH MID & BTM PLT        
13 x 54 DOME HOLE        
14 x 65        
16 x 53        
16 x 65        
18 x 65        
21 x 62        
24 x 72        
30 x 72        
35 x 72        
MCT120-C2253        
RT40-C2250        
RT80-C2251        
RT120-C2252        

   
[1] Conforms to material and structural integrity requirements.
[Pb] Product also evaluated and determined to possess weighted average lead content of
     <=0.25% and complies with lead content requirements for “lead free” plumbing as defined
     by California, Vermont, Maryland, and Louisiana state laws and the U.S. Safe Drinking
     Water Act.
[POE] Product conforms to NSF/ANSI/CAN 61 health effects requirements.

COMPONENTS: Tubing[3] [Pb] [POE]
DPMT-0948        
DPMT-0948-A        
DPMT-1054        
DPMT-1054-A        
DPMT-1054-32MM        
DPMT-1054-1320        
DPMT-1252        
DPMT-1252-A        
DPMT-1252-32MM        
DPMT-1252-1320        
DPMT-1354        
DPMT-1354-32MM        
DPMT-1354-1320        
DPMT-1354-A        

   
[3] Certified for use with tanks 10 x 54 and greater.
[Pb] Product also evaluated and determined to possess weighted average lead content of
     <=0.25% and complies with lead content requirements for “lead free” plumbing as defined
     by California, Vermont, Maryland, and Louisiana state laws and the U.S. Safe Drinking
     Water Act.
[POE] Product conforms to NSF/ANSI/CAN 61 health effects requirements.

COMPONENTS: Valves, Diverter, Point-of-Entry[1] [Pb] [POE]
1" Bypass Assembly - V3006[2]        
1" Bypass Assembly - V3006-XX[2] [5]        
1" Control Valve - WS1XX - V1AABCD-EFFGG[2] [4]        
1" Twin Control Valve - TT1XX - VTT1AABCD-EFFGG[2] [4]        
1" & 1.25" Motorized Alternating Valve - V3069MM-01[2]        
1" & 1.25" Motorized Alternating Valve - V3069FF-01[2]        
1" & 1.25" No Hard Water Bypass Valve - V3070FM[2]        
1" & 1.25" No Hard Water Bypass Valve - V3070FF[2]        
1.25" Control Valve - WS125XX - V125AABCD-EFFGG[2] [4]        
1191 In-Out Head - D1400-XX[2] [6]        
1190FP In-Out Head w/ Fill Port - D1220-01[2]        
External In-Line Mixing Valve - V4099[2]        

   
[1] Conforms to material and structural integrity requirements.
[2] Certified for use with tanks 9 x 48 and greater.
[4] V1AABCD-EFFGG, VTT1AABCD-EFFGG and V125AABCD-EFFGG where:
    AA - May be blank or any two digit letter code
    B  - May be D (downflow, U (upflow), or B (backwash only)
    C  - May be M (meter) or T (timer)
    D  - May be A, A2, A3, B, C, D, E, F, G, H, I, J, K, or Z to indicate the injector 
         installed
    E  - May be blank or any letter code.  If E or M then it includes a mixing valve
    FF - May be any number from 01 to 99.  Indicates packaging or base variations
    GG - May be any two digit combination of letters.  If blank, cover is black or if filled
    
         in indicates colored covers or special labels on the cover.
[5] V3006-XX where XX may be 01, 02 or 04.  Indicates handle color, handle direction or
    packaging.
[6] D1400-XX where XX may be blank, 01, 02, 03 or 04.
[Pb] Product also evaluated and determined to possess weighted average lead content of
     <=0.25% and complies with lead content requirements for “lead free” plumbing as defined
     by California, Vermont, Maryland, and Louisiana state laws and the U.S. Safe Drinking
     Water Act.
[POE] Product conforms to NSF/ANSI/CAN 61 health effects requirements.



 
Clack Corporation 
4462 Duraform Lane
Windsor, WI 53598-9716 
United States 
608-846-3010

Facility : # 1 China

             

COMPONENTS: Tanks, Water Softener[1] [2] [Pb] [POE]
6x10, 2.5" Inlet        
6x12, 2.5" Inlet        
6x13, 2.5" Inlet        
6x17, 2.5" Inlet        
6x18, 2.5" Inlet        
6x29, 2.5" Inlet        
6x35, 2.5" Inlet        
7x13, 2.5" Inlet        
7x17, 2.5" Inlet        
7x19, 2.5" Inlet        
7x24, 2.5" Inlet        
7x30, 2.5" Inlet        
7x35, 2.5" Inlet        
7x40, 2.5" Inlet        
7x44, 2.5" Inlet        
8x13, 2.5" Inlet        
8x17, 2.5" Inlet        
8x18, 2.5" Inlet        
8x24, 2.5" Inlet        
8x30, 2.5" Inlet        
8x35, 2.5" Inlet        
8x40, 2.5" Inlet        
8x44, 2.5" Inlet        
8x47, 2.5" Inlet        
9x17, 2.5" Inlet        
9x17, 2.5" x 2.5" Inlet        
9x18, 2.5" Inlet        
9x18, 2.5" x 2.5" Inlet        
9x24, 2.5" Inlet        
9x24, 2.5" x 2.5" Inlet        
9x30, 2.5" Inlet        
9x30, 2.5" x 2.5" Inlet        
9x35, 2.5" Inlet        
9x35, 2.5" x 2.5" Inlet        
9x40, 2.5" Inlet        
9x40, 2.5" x 2.5" Inlet        
9x42, 2.5" Inlet        
9x42, 2.5" x 2.5" Inlet        
9x48, 2.5" Inlet        
9x48, 2.5" x 2.5" Inlet        
10x13, 2.5" Inlet        
10x13, 2.5" x 2.5" Inlet        
10x13, 4" Inlet        
10x13, 4" x 2.5" Inlet        
10x16, 2.5" Inlet        
10x16, 2.5" x 2.5" Inlet        
10x16, 4" Inlet        
10x16, 4" x 2.5" Inlet        
10x17, 2.5" Inlet        
10x17, 2.5" x 2.5" Inlet        
10x17, 4" Inlet        
10x17, 4" x 2.5" Inlet        
10x18, 2.5" Inlet        
10x18, 2.5" x 2.5" Inlet        
10x18, 4" Inlet        
10x18, 4" x 2.5" Inlet        
10x19, 2.5" Inlet        
10x19, 2.5" x 2.5" Inlet        
10x19, 4" Inlet        
10x19, 4" x 2.5" Inlet        
10x22, 2.5" Inlet        
10x22, 2.5" x 2.5" Inlet        
10x22, 4" Inlet        
10x22, 4" x 2.5" Inlet        
10x24, 2.5" Inlet        
10x24, 2.5" x 2.5" Inlet        
10x24, 4" Inlet        
10x24, 4" x 2.5" Inlet        
10x30, 2.5" Inlet        
10x30, 2.5" x 2.5" Inlet        
10x30, 4" Inlet        
10x30, 4" x 2.5" Inlet        
10x35, 2.5" Inlet        
10x35, 2.5" x 2.5" Inlet        
10x35, 4" Inlet        
10x35, 4" x 2.5" Inlet        
10x40, 2.5" Inlet        
10x40, 2.5" x 2.5" Inlet        
10x40, 4" Inlet        
10x40, 4" x 2.5" Inlet        
10x44, 2.5" Inlet        
10x44, 2.5" x 2.5" Inlet        
10x44, 4" Inlet        
10x44, 4" x 2.5" Inlet        
10x47, 2.5" Inlet        
10x47, 2.5" x 2.5" Inlet        
10x47, 4" Inlet        
10x47, 4" x 2.5" Inlet        
10x54, 2.5" Inlet        
10x54, 2.5" x 2.5" Inlet        
10x54, 4" Inlet        
10x54, 4" x 2.5" Inlet        
12x42, 2.5" Inlet        
12x42, 4.5" Inlet        
12x48, 2.5" Inlet        
12x48, 2.5" x 2.5" Inlet        
12x48, 4" Inlet        
12x48, 4" x 2.5" Inlet        
12x48, 4" x 4" Inlet        
12x52, 2.5" Inlet        
12x52, 2.5" x 2.5" Inlet        
12x52, 4" Inlet        
12x52, 4" x 2.5" Inlet        
12x52, 4" x 4" Inlet        
13x44, 2.5" Inlet        
13x44, 2.5" x 2.5" Inlet        
13x44, 4" Inlet        
13x44, 4" x 2.5" Inlet        
13x44, 4" x 4" Inlet        
13x54, 2.5" Inlet        
13x54, 2.5" x 2.5" Inlet        
13x54, 4" Inlet        
13x54, 4" x 2.5" Inlet        
13x54, 4" x 4" Inlet        
14x47, 2.5" Inlet        
14x47, 2.5" x 2.5" Inlet        
14x47, 4" Inlet        
14x47, 4" x 2.5" Inlet        
14x47, 4" x 4" Inlet        
14x52, 2.5" Inlet        
14x52, 2.5" x 2.5" Inlet        
14x52, 4" Inlet        
14x52, 4" x 2.5" Inlet        
14x52, 4" x 4" Inlet        
14x65, 2.5" Inlet        
14x65, 2.5" x 2.5" Inlet        
14x65, 4" Inlet        
14x65, 4" x 2.5" Inlet        
14x65, 4" x 4" Inlet        
16x28, 2.5" Inlet        
16x28, 2.5" x 2.5" Inlet        
16x28, 4" Inlet        
16x28, 4" x 2.5" Inlet        
16x28, 4" x 4" Inlet        
16x52, 2.5" Inlet        
16x52, 2.5" x 2.5" Inlet        
16x52, 4" Inlet        
16x52, 4" x 2.5" Inlet        
16x52, 4" x 4" Inlet        
16x65, 2.5" Inlet        
16x65, 2.5" x 2.5" Inlet        
16x65, 4" Inlet        
16x65, 4" x 2.5" Inlet        
16x65, 4" x 4" Inlet        
18x36, 4" Inlet        
18x36, 4" x 4" Inlet        
18x53, 4" Inlet        
18x53, 4" x 4" Inlet        
18x65, 4" Inlet        
18x65, 4" x 4" Inlet        
21x36, 4" Inlet        
21x36, 4" x 4" Inlet        
21x53, 4" Inlet        
21x53, 4" x 4" Inlet        
21x62, 4" Inlet        
21x62, 4" x 4" Inlet        
24x65, 4" Inlet        
24x65, 4" x 4" Inlet        
24x72, 4" Inlet        
24x72, 4" x 4" Inlet        
30x72, 4" Inlet        
30x72, 4" x 4" Inlet        
36x57, 4" Inlet        
36x57, 4" x 4" Inlet        
36x72, 4" Inlet        
36x72, 4" x 4" Inlet        
12x48, 4.5" Butress Inlet        
12x52, 4.5" Butress Inlet        
13x44, 4.5" Butress Inlet        
13x54, 4.5" Butress Inlet        
14x47, 4.5" Butress Inlet        
14x52, 4.5" Butress Inlet        
14x65, 4.5" Butress Inlet        
16x28, 4.5" Butress Inlet        
16x52, 4.5" Butress Inlet        
16x65, 4.5" Butress Inlet        
10x35, 2.5" x 2.5" Inlet 1.25" Dome Hole        
10x35, 4" x 2.5" Inlet 1.25" Dome Hole        
10x40, 2.5" x 2.5" Inlet 1.25" Dome Hole        
10x40, 4" x 2.5" Inlet 1.25" Dome Hole        
10x44, 2.5" x 2.5" Inlet 1.25" Dome Hole        
10x44, 4" x 2.5" Inlet 1.25" Dome Hole        
10x47, 2.5" x 2.5" Inlet 1.25" Dome Hole        
10x47, 4" x 2.5" Inlet 1.25" Dome Hole        
10x54, 2.5" x 2.5" Inlet 1.25" Dome Hole        
10x54, 4" x 2.5" Inlet 1.25" Dome Hole        
12x48, 2.5" x 2.5" Inlet 1.25" Dome Hole        
12x48, 4" x 2.5" Inlet 1.25" Dome Hole        
12x52, 2.5" x 2.5" Inlet 1.25" Dome Hole        
12x52, 4" x 2.5" Inlet 1.25" Dome Hole        
13x44, 2.5" x 2.5" Inlet 1.25" Dome Hole        
13x44, 4" x 2.5" Inlet 1.25" Dome Hole        
13x54, 2.5" x 2.5" Inlet 1.25" Dome Hole        
13x54, 4" x 2.5" Inlet 1.25" Dome Hole        
14x47, 2.5" x 2.5" Inlet 1.25" Dome Hole        
14x47, 4" x 2.5" Inlet 1.25" Dome Hole        
14x52, 2.5" x 2.5" Inlet 1.25" Dome Hole        
14x52, 4" x 2.5" Inlet 1.25" Dome Hole        
14x65, 2.5" x 2.5" Inlet 1.25" Dome Hole        
14x65, 4" x 2.5" Inlet 1.25" Dome Hole        
16x28, 2.5" x 2.5" Inlet 1.25" Dome Hole        
16x28, 4" x 2.5" Inlet 1.25" Dome Hole        
16x52, 2.5" x 2.5" Inlet 1.25" Dome Hole        
16x52, 4" x 2.5" Inlet 1.25" Dome Hole        
16x65, 2.5" x 2.5" Inlet 1.25" Dome Hole        
16x65, 4" x 2.5" Inlet 1.25" Dome Hole        
18x65, 6" Flange        
18x65, 6" x 6" Flange        
21x62, 6" Flange        
21x62, 6" x 6" Flange        
24x65, 6" Flange        
24x65, 6" x 6" Flange        
24x72, 6" Flange        
24x72, 6" x 6" Flange        
30x72, 6" Flange        
30x72, 6" x 6" Flange        
36x57, 6" Flange        
36x57, 6" x 6" Flange        
36x72, 6" Flange        
36x72, 6" x 6" Flange        
42x72, 6" x 6" Flange        
48x72, 6" x 6" Flange        
63x67, 6" x 10" Flange        
63x67, 6" x 6" Flange        
63x86, 6" x 10" Flange        
63x86, 6" x 6" Flange        

   
[1] Conforms to material and structural integrity requirements.
[2] The "x" in the trade name may be omitted.
[Pb] Product also evaluated and determined to possess weighted average lead content of
     <=0.25% and complies with lead content requirements for “lead free” plumbing as defined
     by California, Vermont, Maryland, and Louisiana state laws and the U.S. Safe Drinking
     Water Act.
[POE] Product conforms to NSF/ANSI/CAN 61 health effects requirements.



 
Clack Corporation 
4462 Duraform Lane
Windsor, WI 53598 
United States 
608-846-3010
Visit this company's website

Facility : # 1 USA

             

COMPONENTS: Tanks, Water Softener[1] [2] [Pb] [POE]
7x35, 2.5" Inlet        
7x44, 2.5" Inlet        
8x35, 2.5" Inlet        
8x40, 2.5" Inlet        
8x44, 2.5" Inlet        
9x35, 2.5" Inlet        
9x40, 2.5" Inlet        
9x42, 2.5" Inlet        
9x48, 2.5" Inlet        
10x35, 2.5" Inlet        
10x40, 2.5" Inlet        
10x42, 2.5" Inlet        
10x44, 2.5" Inlet        
10x47, 2.5" Inlet        
10x54, 2.5" Inlet        

   
[1] Conforms to material and structural integrity requirements.
[2] The "x" in the trade name may be omitted.
[Pb] Product also evaluated and determined to possess weighted average lead content of
     <=0.25% and complies with lead content requirements for “lead free” plumbing as defined
     by California, Vermont, Maryland, and Louisiana state laws and the U.S. Safe Drinking
     Water Act.
[POE] Product conforms to NSF/ANSI/CAN 61 health effects requirements.


Number of matching Manufacturers is 4
Number of matching Products is 342
Processing time was 0 seconds