11.125.150 Orientation of valves.
This section is included in your selections.
The following criteria shall be applied for the orientation of plug valves, and shall be clearly indicated on drawings and specified:
(a) The rotation of the plug shall be about a horizontal axis.
(b) The plug shall store in the top when the valve is open.
(c) The valve shall be oriented such that the seat is opposite the high pressure side; that is, towards the pumps. (28-ME-DG-02 § 9)