4VAC25-150-370: Wellhead equipment

A. All wellhead connections and equipment, including but not limited to pipe fittings, valves and unions placed on or connected with a well, well casing, casing head, drill pipe, or tubing shall have a working pressure rating of a minimum of 110% of the maximum anticipated pressure that the material will be exposed to, and shall be in good working condition.

B. Adequate and proper wellhead equipment shall be installed and maintained in good working order on every well that is not permanently abandoned and plugged, so that pressure measurements may be obtained at any time. Valves shall be installed so that pressures can be separately obtained from each production string.