NSF Product and Service Listings

These NSF Official Listings are current as of Tuesday, October 14, 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/Plumbing/Listings.asp?Company=16150&Standard=358&

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 358
Water-Based Ground-Source “Geothermal” Heat Pump Systems



 
Flying W Plastics Inc. 
487 Vanhorn Drive
P.O. Box 759 
Glenville, WV 26351 
United States 
304-462-5779
Visit this company's website

Facility : Glenville, WV

NSF/ANSI 358-1 Polyethylene Pipe and Fittings

Product Type   Material Type   Trade Name   Product Standard

Pipe%
 
PE 4710
 
EARTH SOURCE GEOTHERMAL
 
ASTM D3035
3/4" - 2" DR 7
3/4" - 3" DR 9
3/4" - 3" DR 11
3" DR 13.5
3" DR 15.5
3" DR 17

% Certified product may include a U-Bend fitting.

Pipe%
 
PE 4710
 
EARTH SOURCE GEOTHERMAL
 
ASTM F714
4" - 20" DR 9
4" - 20" DR 11
4" - 20" DR 13.5
4" - 20" DR 15.5[1]

4" - 20" DR 17

[1] Special sizes may be acceptable for engineered applications, due to system conditions or
    special local requirements. It is the responsibility of the end user to ensure the
    product is suitable for the intended application.
% Certified product may include a U-Bend fitting.


Number of matching Manufacturers is 1
Number of matching Products is 11
Processing time was 0 seconds