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(Underwriters Laboratory Listed and FM Approved)
Post indicating valve assembly shall consist of a buried butterfly valve and above grade indicator actuator of the traveling nut type.
The actuator shall have a rating of 450 ft. lbs. of torque against the input stops.
The target mechanism shall consist of an internal rotating member which contains a 2-3/4" hole on four sides.
The outer member is stationary and shall contain similar holes.
A fail safe spring shall be included on the post to preclude accidental closing.
The butterfly valve and post assembly shall be the PIVA as manufactured by Pratt, Underwriters Laboratory listed and Factory Mutual approved or approved equal.
Valves shall be manufactured in accordance with AWWA C504-94, Class 150B.