| 主权项 |
1. An electro-pneumatic controller comprising:
a base portion having at least one lateral surface, wherein a plurality of passageways disposed through the base portion, and a first one of the plurality of passageways is adapted to be coupled to a source of a control fluid, and wherein at least one bore extends through the at least one lateral surface, the at least one bore having a counterbore portion and an engagement portion having an outer surface and all or a portion of the outer surface may be threaded; a cap portion having an interior, the cap portion being removably secured to the base portion; at least one solenoid valve coupled to the base portion and disposed at least partially within the interior of the cap portion; and a standard NPT plug having a head portion and an engagement portion having an outer surface, wherein all or a portion of the outer surface is threaded and is in threaded engagement with all or a portion of the outer surface of the engagement portion of the bore to secure the standard NPT plug to the base portion, wherein a top surface of the head portion of the standard NPT plug is coplanar with the at least one lateral surface of the base portion or is disposed within the counterbore portion of the bore. |
