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Each pressure relief valve shall be a minimum of 3/4 inch (20 mm) and shall be equipped with a test lever. In addition, an automatic vacuum relief valve shall be installed on such tanks with a 24-mesh screen of bronze or stainless steel. The area of the screening shall be 50 percent greater than the opening it serves. All equipment of a hydropneumatic system shall be capable to withstand the designed working pressure.
Exception: This section shall not apply to pressurized captive air diaphragm/bladder tanks.
Every pressure tank in a hydropneumatic pressure booster system shall be protected with a pressure relief valve. The pressure relief valve shall be set at a maximum pressure equal to the rating of the tank. The relief valve shall be installed on the supply pipe to the tank or on the tank. The relief valve shall discharge by gravity to a safe place of disposal.
The entire water distribution system within buildings shall be tested utilizing a water or air pressure test. All piping, fittings, valves and equipment except any atmospheric tank shall be tested to 1 1/2 times its designed pressure but not less than 100 psi (690 kPa). When the test pressure exceeds 100 psi (690 kPa) only a hydrostatic test shall be given.
(Amend Coun. J. 10-14-21, p. 37722, Art. VI, § 26)
In residential occupancies, hot water shall be supplied to plumbing fixtures and equipment utilized for bathing, washing, culinary purposes, cleansing, laundry or building maintenance. In nonresidential occupancies, hot water shall be supplied for culinary purposes, cleansing, laundry or building maintenance purposes. In nonresidential occupancies, hot water or tempered water shall be supplied for bathing and washing purposes.
No water exceeding 140°F (60°C) shall discharge into any lavatory, sink, bathtub or shower. This provision shall not supersede the requirements for temperature-limiting valves in Section 18-29-424.
(Amend Coun. J. 10-14-21, p. 37722, Art. VI, § 27)
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