Metal valves for use in flanged pipe systems - Face-to-face and centre-to-face dimensions IS0 5752-1982 (E)

Metal valves for use in flanged pipe systems -

Face-to-face and centre-to-face dimensions

IS0 5752-1982 (E)

The object of this International Standard is the establishment of  face-to-face and centre-to-face dimensions for metal valves to permit a degree of dimensional interchangeability. It is intended
for use in preparing product standards for industrial valves.
Although the tables of face-to-face dimensions in this International Standard represent a considerable rationalization of international practices it has not been possible to reduce these to a single series of dimensions for the various types of valves. Alternatives have been included. For convenience these
have been called short, medium and long, but these terms are not used in a purely descriptive sense.
The pressure/temperature ratings for the different types of valves are those to be specified in the valve product standards for the types of valve and materials used.
Where dimensions from inch series of valves have been converted into millimetres, the exact values obtained have been rounded to the whole millimetre below when the decimal value
obtained in conversion has been less than 05 mm, and to whole millimetre above when the decimal value obtained in conversion has been equal to or greater than 0,5 mm.
Throughout this International Standard, nominal sizes DN 550 and DN 650 are shown in parenthesis to indicate non-preferred sizes.

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