suitable for corrosive environments size:2",2.5",3",3.5",4", ... ss phosphor brassconnection way:back connection,bottom connection ,and clamp fixing,falaned fixing thread,hose etc.connection thread:NPT,BSP,BSPT,PT,ZG ... Grade B);+/-1%(ASME B40.1 Grade A)Bracket: U-clamp or front flange availabeAmbient temperature:-25 to 55 degree centigrade ...