These valves are used to provide an easy access to tank and to assure a large emergency relief opening in case of exposure to fire.
MATERIALS
BODY
Fabricated carbon steel with Stainless Steel electrowelded seat, or AISI 304 or 316 Stainless Steel.
COVER
Carbon steel or AISI 304 or 316 Stainless Steel.
DIAPHRAGMS
Synthetic rubber or P.T.F.E.
FLANGE
API 650,
ON REQUEST DRILLED TO ANSI 150 OR ISO PN10.