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Internal Tab Washers:The material of the inner tongue stop washer is low carbon steel, medium carbon steel, 65 manganese, stainless steel, aluminum, copper, insulating material, etc. Surface treatment using blue and white zinc plating, color zinc, black zinc, nickel, chromium, blackening, mechanical galvanizing, plating dacro, quenching, tempering, carburizing, etc.
DN | 3/8 | 1/2 | 5/8 | 3/4 | 7/8 | 1 | |
d | |||||||
d | DN | 0.375 | 0.5 | 0.625 | 0.75 | 0.875 | 1 |
Min | 0.385 | 0.51 | 0.635 | 0.76 | 0.885 | 1.01 | |
Max | 0.408 | 0.535 | 0.66 | 0.791 | 0.915 | 1.04 | |
dc | Max | 0.814 | 1.035 | 1.284 | 1.415 | 1.808 | 1.928 |
a | Min | 30° | 30° | 30° | 30° | 30° | 30° |
Max | 35° | 35° | 35° | 35° | 35° | 35° | |
H | Min | 0.53 | 0.53 | 0.785 | 0.785 | 0.86 | 0.86 |
w | Min | 0.196 | 0.243 | 0.302 | 0.302 | 0.437 | 0.437 |
n | Max | 0.145 | 0.145 | 0.22 | 0.22 | 0.229 | 0.229 |
t | Min | 0.156 | 0.156 | 0.234 | 0.234 | 0.25 | 0.25 |