This Standard specifies the terms and definitions, symbols, classification and marking, structure and materials, requirements, test methods, inspection rules, marking, labeling, instruction manual, packaging, transportation and storage of gas pressure regulators for city gas (hereinafter referred to as pressure regulators). This Standard applies to pressure regulators for regulating outlet pressure with an inlet pressure not exceeding 10.0 MPa, an operating temperature range not exceeding - 20℃~60℃ and a lower limit not lower than the gas dew point temperature, and a nominal size not exceeding 400 mm. This Standard does not apply to pressure regulators for bottled liquefied petroleum gas and dimethyl ether.
Basic Data
Standard ID
GB 27790-2020 (GB27790-2020)
Description (Translated English)
City gas pressure regulators
Sector / Industry
National Standard
Classification of Chinese Standard
P47
Word Count Estimation
48,432
Date of Issue
2020-11-17
Date of Implementation
2021-12-01
Older Standard (superseded by this standard)
GB 27790-2011
Regulation (derived from)
National Standard Announcement No. 25 of 2020
Issuing agency(ies)
State Administration for Market Regulation, China National Standardization Administration
