1.1 These requirements cover pressure relief valves intended for use in sprinkler systems for fire protection service to relieve excessive pressures caused by thermal expansion, downstream of a pressure reducing valve or in valve trim.
1.2 Requirements for installation of these valves are included in the Standard for the Installation of Sprinkler Systems, NFPA 13.
| UL Standards & Engagement | |
|---|---|
| Product Category | Standards and Technical Documents |
| Product Number | UL 1478A |
| Product Name | Pressure Relief Valves for Sprinkler Systems |
