Dimensions Ring Joint Facings
Ring Type Joint Flange is a method of ensuring leak proof flange connection at high pressures. A metal ring is compressed into a hexagonal groove on the face of the flange to make the seal. This jointing method can be employed on Weld Neck, Slip-on and Blind Flange. Dimensions Ring Joint Facings Nominal Size Groove Dimensions Diameter of Raised Portion, K Class 150 NPS Class 300 NPS Class 400 NPS Class 600 NPS Class 900 NPS Class 1500 NPS Class 2500 NPS Groove Number Pitch Diameter, P Depth, E Width, F Radius at Bottom, R Class 150 NPS Class 300, 600 NPS Class 900 NPS Class 1500 NPS Class 2500 NPS _ 1/2 _ 1/2 _ _ _ R11 34.14 5.54 7.14 0.8 51.0 _ _ _ _ _ 1/2 _ R12 39.67 6.35 8.74 0.8 60.5 _ 3/4 _ 3/4 _ _ 1/2 R13 42.88 6.35 8.74 0.8 63.5 65.0 _ _ _ _ _ 3/4 _ R14 44.45 6.35 8.74 0.8 66.5 1 _ _ _ _ _ _ R15 47.63 6.35 8.74 0.8 63.5 1 _ 1 _ 1 3/4 R16 50.80 6.35 8.74 0.8 70.0 7...