GB/T 37621-2019
ActiveBuried type butterfly valve
直埋式蝶阀
Application Summary AI generated
GB/T 37621-2019 specifies the technical requirements, test methods, inspection rules, and marking for buried type butterfly valves used in underground water supply and drainage systems. It applies to valves installed directly in buried pipelines without requiring a valve chamber, primarily in municipal water supply, heating, and industrial fluid transport applications. The standard ensures sealing performance, corrosion resistance, and operational reliability under soil pressure and environmental conditions.
Related Standards
GB/T 19249-2003
Reverse osmosis water treatment equipment
GB/T 16895.3-2004
Electrical installations of buildings--Part 5-54:Selection and erection of electrical equipment--Earthing arrangements，protective conductors and protective bonding conductors
GB/T 7725-2004
Room air conditioners
GB/T 16895.22-2004
Electrical instal lations of buildings--Part 5-53:Selection and erection of electrical equipment isolation，switching and control--Section 534:Devices for protection against overvoltages
GB/Z 28597-2012
Lifts and escalators subject to seismic conditions - Compilation report
GB/Z 28598-2012
Study of the use of lifts for evacuation during an emergency
GB/Z 31822-2015
Study report on the safety requirements of public service escalators and moving walks
GB/Z 35850.3-2021
Programmable electronic systems in safety-related applications for lifts (elevators), escalators and moving walks—Part 3: Life cycle guideline for programmable electronic systems related to PESSRAL and PESSRAE
Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.