UL 1821-2015
UL Standard for Safety Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service (Third Edition)

Standard No.

UL 1821-2015

Release Date

2015

Published By

Underwriters Laboratories (UL)

Status

Be replaced 2017-03

Replace By

UL 1821 BULLETIN-2015

Latest

UL 1821-2019

Scope

These requirements cover thermoplastic pipe and fittings for use in wet pipe sprinkler systems for fire protection service. Thermoplastic pipe and fittings covered by these requirements are intended for use in sprinkler systems in any of the following types of occupancies: a) Light hazard occupancies as defined in the Standard for Installation of Sprinkler Systems@ NFPA 13; b) Residential occupancies as defined in the Standard for Installation of Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes@ NFPA 13D; and c) Residential occupancies as defined in the Standard for Installation of Sprinkler Systems in Low-Rise Residential Occupancies@ NFPA 13R. The pipe and fittings covered by these requirements are intended to be installed in accordance with the Standard for Sprinkler Systems in One- and Two-Family Dwellings and Manufactured Homes@ NFPA 13D; the Standard for Sprinkler Systems in Low-Rise Residential Occupancies@ NFPA 13R; or the Standard for Installation of Sprinkler Systems@ NFPA 13.

UL 1821-2015 history

• 1970 UL 1821-2019 UL Standard for Safety Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service
• 2018 UL 1821 CRD-2018 UL Standard for Safety Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service - Section / Paragraph Reference: New Clauses 1.4 and 29A Subject: Pipe and Fittings Embedded in Concrete (Edition 3: August 25@ 2015)
• 2018 UL 1821 BULLETIN-2018 UL Standard for Safety Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service
• 2017 UL 1821 BULLETIN-2017 UL Standard for Safety Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service (COMMENTS DUE: April 17@ 2017)
• 2015 UL 1821 BULLETIN-2015 UL Standard for Safety Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service (COMMENTS DUE: June 15@ 2015)
• 2015 UL 1821-2015 UL Standard for Safety Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service (Third Edition)
• 2014 UL 1821 BULLETIN-2014 UL Standard for Safety Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service (COMMENTS DUE: December 1@ 2014)
• 2011 UL 1821 BULLETIN-2011 UL Standard for Safety Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service (COMMENTS DUE: September 26@ 2011)
• 2006 UL 1821 BULLETIN-2006 UL Standard for Safety Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service
• 2004 UL 1821 BULLETINS-2004 1/29/2004 (20p)
• 2004 UL 1821 BULLETIN-2004 UL Standard for Safety Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service
• 2003 UL 1821-2003 UL Standard for Safety Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service (Second Edition; Reprint with Revisions through and including December 15@ 2011)
• 2001 UL 1821 BULLETIN-2001 UL Standard for Safety Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service
• 1994 UL 1821-1994 UL Standard for Safety Thermoplastic Sprinkler Pipe and Fittings for Fire Protection Service (First Edition)