S.G Iron disc which is accurately guided between the two stems.
Two Piece Stem design which is precisely guided between the PTFE / Bronze bushes.
Compatible to sandwich between flanges as per BS 10 Table D, E, F,H, DIN, PN 10, PN16, PN 25, PN 40, ASA 150, ASA 300, IS 778, IS 6392 Table 17 and IS 1538.
