JSA - JIS B 8210
Safety devices for protection against excessive pressure - Direct spring loaded safety valves for steam and gas service
|Publication Date:||25 September 2009|
|ICS Code (Boilers and heat exchangers):||27.060.30|
|ICS Code (Protection against excessive pressure):||13.240|
This Standard specifies the direct spring loaded safety valves for steam and direct spring loaded safety valves for gas, of cylindrical coil spring (hereafter referred to as "safety valves", where no particular distinction of uses, i.e. those for gas or for steam, is required). However, the following are not included:
a) those used for the purpose of releasing the pressure of liquid;
b) those which are for use at set pressure under 0.1 MPa or over 42.9 MPa;
c) those of special construction, such as those intended for vehicles;
d) those intended for pressure regulation, such as unloaders;
e) those less than 15 mm in seat diameter.
NOTE: The International Standards corresponding to this Standard and the symbol of degree of correspondence are as follows:
ISO 4126-1: 2004 Safety devices for protection against excessive pressure- Part 1: Safety valves
ISO 4126-7: 2004 Safety devices for protection against excessive pressure- Part 7: Common data
(Overall evaluation: MOD)
The symbols which denote the degree of correspondence in the contents between the relevant International Standards and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/ lEC Guide 21.