NSF Product and Service Listings

These NSF Official Listings are current as of Thursday, January 15, 2026 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/Plumbing/Listings.asp?Company=3R040&Standard=014&

Did you know?

The new NSF Product Listings website is available for NSF/ANSI 14-Certified products with a new look and feel. Click on "Try it Now" to check it out!

NSF/ANSI 14
Plastics Piping System Components and Related Materials


Click here for a list of End Use Code Designations.

Click on Product Standards or footnote in blue to view the referenced document



 
Watts Radiant 
4500 East Progress Place
Springfield, MO 65803 
United States 
417-864-6108

Facility : # 2 China

Potable Water - Pipe and Fittings

Product Type   Material Type   Trade Name   Product Standard

Tubing# * §
 
MLTPL
 
RadiantPEX-AL
 
ASTM F1281
1/2"   5/8"   3/4"   1"  

# Orange.
* Accepted by NSF for use in residential and commercial construction, including
  manufactured housing.
§ Product is Certified to the Uniform Plumbing Code™. Installation in accordance with the
  manufacturer's instructions and the requirements of the latest edition of the Uniform
  Plumbing Code™.

Compression Fittings§ +++
 
Brass
 
Watts Compression Fittings
 
ASTM F1281
3/8"   1/2"   5/8"   3/4"  
1"  

§ Product is Certified to the Uniform Plumbing Code™. Installation in accordance with the
  manufacturer's instructions and the requirements of the latest edition of the Uniform
  Plumbing Code™.
+++ Material complies with NSF/ANSI/CAN 61 health effects requirements when tested at
    temperatures up to and including Commercial Hot (180° F).

Press Fittings (F5)§ +++
 
Brass
 
Watts Press Fittings
 
ASTM F1281
3/8"   1/2"   5/8"   3/4"  
1"  

§ Product is Certified to the Uniform Plumbing Code™. Installation in accordance with the
  manufacturer's instructions and the requirements of the latest edition of the Uniform
  Plumbing Code™.
+++ Material complies with NSF/ANSI/CAN 61 health effects requirements when tested at
    temperatures up to and including Commercial Hot (180° F).


Radiant Floor Heating

Product Type   Material Type   Trade Name   Product Standard

Tubing# §
 
MLTPL
 
RadiantPEX-AL
 
ASTM F1281
1/2"   5/8"   3/4"   1"  

# Orange.
§ Product is Certified to the Uniform Plumbing Code™. Installation in accordance with the
  manufacturer's instructions and the requirements of the latest edition of the Uniform
  Plumbing Code™.

Tubing@ §
 
MLTPL
 
WaterPEX-AL
 
CSA B137.10
1/2"   5/8"   3/4"   1"  

@ Blue and red.
§ Product is Certified to the Uniform Plumbing Code™. Installation in accordance with the
  manufacturer's instructions and the requirements of the latest edition of the Uniform
  Plumbing Code™.

Tubing@ §
 
MLTPL
 
WaterPEX-AL
 
ASTM F1281
1/2"   5/8"   3/4"   1"  

@ Blue and red.
§ Product is Certified to the Uniform Plumbing Code™. Installation in accordance with the
  manufacturer's instructions and the requirements of the latest edition of the Uniform
  Plumbing Code™.

Compression Fittings$ §
 
Brass
 
Watts Compression Fittings
 
ASTM F1281
3/8"   1/2"   5/8"   3/4"  
1"  

$ This product is not Certified for use in a potable water distribution system. This
  product has been evaluated for use in Radiant Floor Heating (NSF-rfh) applications only.
§ Product is Certified to the Uniform Plumbing Code™. Installation in accordance with the
  manufacturer's instructions and the requirements of the latest edition of the Uniform
  Plumbing Code™.

Press Fittings (F5)$ §
 
Brass
 
Watts Press Fittings
 
ASTM F1281
3/8"   1/2"   5/8"   3/4"  
1"  

$ This product is not Certified for use in a potable water distribution system. This
  product has been evaluated for use in Radiant Floor Heating (NSF-rfh) applications only.
§ Product is Certified to the Uniform Plumbing Code™. Installation in accordance with the
  manufacturer's instructions and the requirements of the latest edition of the Uniform
  Plumbing Code™.


Number of matching Manufacturers is 1
Number of matching Products is 36
Processing time was 0 seconds