(a) Maximum spacing between line valves shall be as identified in Section 5-4-2(d).
(b) Install buried valves on top of an 18-inch square, three-inch thick, solid concrete pad (minimum dimensions). The concrete pad may be provided by a pre-cast manufacturer or cast-in-place in the field above grade. Concrete used for the pads shall be a minimum 3,000 psi mix. The pads may not be cast-in-place in the pipe trench. Connection to pipe shall be such that there shall be no stress at the joint caused by misalignment or inadequate support of pipe or valve.
(c) Valve box. Set a valve box over each buried valve. Support box so that no stress shall be transmitted to the valve or pipe line. Install box plumb and set top flush with finished grade. Operating nut shall be centered in box. Provide a 24-inch x 24-inch wide by six-inch thick concrete pad at top of valve boxes outside paved areas.
(d) Valve operation nut shall be within 30 inches of the top of box. Provide stem extension if necessary to bring operating nut to within 30 inches of the top of box.
(e) Install fittings as recommended by the manufacturer. Fittings shall be blocked or otherwise restrained from movement.
(f) Install valves, gates, and accessories in complete accordance with the manufacturer's recommendations.
(g) Install air / vacuum valve inside a manhole as per manufacturer's recommendations and the city's approval.
(Ord. of 11-7-16; No. 10-16)