Who knows the connection flange - 2.5 inches RFSO DIN PN 40? What does that mean? What's the country's standard, RFSO?
RF SO means a sudden neck flange, DIN is the German standard, PN40 is the pressure level (40 kg) pressure.Elbows DN65 (73) - 73 OD x 2.6 WT, which means nominal diameter DN65 elbow, the outer diameter of the actual size of 73mm, 2.6WT means 2.6mm thick.Ball VALVE - 3 PIECE - 3 PIECE DN2.5''- SW is 3 mm thick tube, DN2.5 "means a false statement, but said 2.5", it can be said DN65, nominal diameter refers to the ball valve, SW socket welding.
RFSO is SO/RF, said hubbed, 2.5 inches is equivalent to DN65, i.e. the flange diameter is 76mm, PN40 is the nominal pressure of 400 kg. Elbow DN65 (73) - 73 OD x 2.6 WT is a non-standard elbow with an elbow diameter of 73mm,
DIN German standard, SO diameter flange, the sealing surface is RF style, PN 40 is the pressure rating. "2.5" is the specification.73 OD, outer diameter 73 mm, 2.6 WT thickness 2.6 mm, DN65 (73) same, it is specification, equivalent to 2.5".VALVE valve, so small ball valve can be a large number of words, which is cheaper to use - 3 PIECE, 3 mm thick pipe - DN2.5''specifications - SW connection way socket.
