... the tempering of inflammable gas and liquid flame from explosion. Usually used on the storage tank or on ... valve. Has compact structure, high reliability, the core parts anti-explosion, easy cleaning, and other advantages, especially applicable to oxyhydrogen, ... jointAssistance fire layer material: 304 stainless steel, 316 stainless steel.Anti-explosion class: BS 5501, IIA, IIB, IIC.Flange standards: ...