Emergency vent manhole cover is a quick pressure relief device, the main components of materials and its technical performance, the same breathing manhole.
Shell material: carbon steel, stainless steel (SUS304, SUS304L, SUS316, SUS316L), thermal insulation jacket
Internal core components: valve disc, valve seat, valve stem, valve sleeve.
Internal core material: stainless steel or ptfe.
Sealing ring material: ptfe.
Ambient temperature: -30~+60.
Operating pressure: +1765Pa (180mmH2O).
Explosion proof grade: 5501:IIA IIB, BS, IIC.
Flange standard: GB, HG, SH, HGJ, JB, ANSL, JIS and other standards. (user specified, please specify pressure level)
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