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WIS and IGN Library

The Library contains WIS & IGN as PDF files in one of four states (current, draft, archived, archival candidate) for free download. Pay close attention to a document’s caveats.

WIS and IGN Library

WIS

WIS 4-23-04 Issue 1 Specification for underground stop valves, including spherical valves, for potable water services for nominal sizes up to and including 63 and nominal pressures of 10 bar minimum and made principally of metal or thermoplastics

Issue: March 1991 Code: 4-23-04 Status: Current
WIS

WIS 4-25-01 Issue 1 Specification for the use of steel tanks in the water industry

Issue: October 1999 Code: 4-25-01 Status: Current
Archived

IGN 4-25-02 Issue 1 Applications for stainless steel in the water industry

Issue: January 1999 Code: 4-25-02 Status: Archived
Draft

IGN 4-25-02 Issue 2 Applications for Stainless Steel in the Water Industry

Status: For Comment From: 21/04/2022 To: 20/07/2022
Archived

IGN 4-25-02 Issue 2 Applications for stainless steel in the water industry

Issue: August 2023 Code: 4-25-02 Status: Archived
IGN

IGN 4-25-02 Issue 2.1 Applications for stainless steel in the water industry

Issue: November 2023 Code: 4-25-02 Status: Current
Draft

WIS 4-26-01 Specification for leak tightness of covers for manholes and inspection chambers

Status: For Comment From: 06/02/2024 To: 05/05/2024
WIS

WIS 4-26-01 Issue 1 Specification for leaktightness of covers for manholes and inspection chambers

Issue: August 2024 Code: 4-26-01 Status: Current
Archived

IGN 4-31-05 Issue 1 Specification for solid wall concentric external rib-reinforced uPVC sewer pipe

Issue: March 1988 Code: 4-31-05 Status: Archived
Archived

IGN 4-32-05 Issue 1 Specification for polyethylene (PE) pipes for sewer linings (non-pressure applications)

Issue: April 1986 Code: 4-32-05 Status: Archived