H O M EGENERAL CHARACTERISTICS:Range 1” , With Flange ND40/50/60/65 & ND080/100Epoxy paint cured 250 micronss Range from ND50 up to ND300WRAS certificate for Drinking Water (Rubber and paint) Epoxy paint cured 250 micronsRef. 100/500B Air Relief Valve Thread End PN10/16 ABS INTERNALS