NSF Product and Service Listings

These NSF Official Listings are current as of Saturday, January 22, 2022 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/PwsComponents/Listings.asp?Company=56180&Standard=061&

Drinking Water System Components - Health Effects

NOTE: Unless otherwise indicated for Materials, Certification is only for the Water Contact Material shown in the Listing. Click here for a list of Abbreviations used in these Listings. Click here for the definitions of Water Contact Temperatures denoted in these Listings.

Flowserve Sulphur Springs Operation 
1511 Jefferson Street
Sulphur Springs, TX 75482 
United States 

Facility : Sulphur Springs, TX

Joining and Sealing Materials

    Water Water
    Contact Contact
Trade Designation Size Temp Material

Flowserve Valve Sealant #234 >= 1/2" CLD 23 SLC
BTR Valve Sealant #421[1] >= 1/2" CLD 23 HC
Nordstrom Valve Sealant #421[1] >= 1/2" CLD 23 HC

[1] Suffix letters A, B, C, D, G, J, and K indicate stick size.

Number of matching Manufacturers is 1
Number of matching Products is 3
Processing time was 1 seconds