Choice of 1/4", 3/8", 1/2"NPT or John Guest Super Speedfit® Inlet/Outlet. Integral bracket (IB) versions available. Available in clear and opaque. Buttress threads and uniform walls for easier cartridge change andimproved strength. Caps available with differential pressure meter option (IBMM cap). Improved pressure-relief/bleed button option available. Leak-proof sealing with top-seated floating Buna-N o-ring. Clear housings offer on-site examination of cartridge