Specifies dimensions for fixed and rotatable bolted flanges for use in low, medium and high vacuum systems within the range of 10 mm to 1000 mm nominal bore. Flange No. designation is used and preferred sizes identified. Flange Nos. 50 and below will accommodate future ISO quick release couplings.

Original price was: $264.16.$132.00Current price is: $132.00.
Specification for dimensions of vacuum flanges
BSI Group , 10/11/1971

