Valves on Isometric Drawings
Valves on Isometric Drawings
(OP)
Does the orientation of a valve on an isometric tell the installer/fabricator which direction the valve handle is to be oriented (horizontal or vertical)?
Dimensions on an isometric. Are they ALWAYS taken as center of pipe, unless otherwise noted? Even if the dimension and pipe are in different iso planes?
The Dimension 1'-7 3/4" in my atachement... do you read this as from the center of the purple pipe, or from the weldolet (edge of pipe)?
Thanks for any input.
Kevin
Dimensions on an isometric. Are they ALWAYS taken as center of pipe, unless otherwise noted? Even if the dimension and pipe are in different iso planes?
The Dimension 1'-7 3/4" in my atachement... do you read this as from the center of the purple pipe, or from the weldolet (edge of pipe)?
Thanks for any input.
Kevin





RE: Valves on Isometric Drawings
Yes
Yes
The dimension is from the center of the purple pipe.
RE: Valves on Isometric Drawings
Further question on the drawing. The valve handle in the field can only be placed in the direction as shown on the isometric due to surrounding piping and structures. Would I have been better off showing the valve vertical and placing the dimension in question in the vertical plane?
In five years of piping drafting this is the first time this question has arose.
Thanks.
Kevin
RE: Valves on Isometric Drawings
RE: Valves on Isometric Drawings
RE: Valves on Isometric Drawings
RE: Valves on Isometric Drawings
"a cluttered drawing with an unusual amount of notes does not promote clarity"
I agree with this 100% My suggestion that a note wouldn't hurt was based on the apparent difficulty in making the correct orientation clear, combined with the critical need to orient the handle correctly. Unnecessary notes are likely to cause unanticipated problems.
RE: Valves on Isometric Drawings