BS-EN-257 › Complete Document History
Mechanical thermostats for gas-burning appliances

Complete Current Edition:
   2022/A1 EDITION - 2022 EDITION WITH AMENDMENT A1 INTERFILED - Jan. 12, 2024

Obsolete Revision Information:
   2022 EDITION - Mechanical thermostats for gas-burning appliances - Oct. 31, 2022
   2010 EDITION - Mechanical thermostats for gas-burning appliances - July 31, 2010
   AMD 9303 - AMENDMENT 1 - Jan. 1, 1997
   1992 EDITION - MECHANICAL THERMOSTATS FOR GAS - Jan. 1, 1992