1. Item #3-1: 6” OR LARGER GATE VALVES A. Materials 1. Furnish in compliance with the specifications, 6" or larger gate valves as described in the following specification 2. Individual estimated quantities are itemized on the bid form B. Gate Valves, Resilient Seat with Gland 1. Gate Valves shall be iron body, bronze mounted, resilient seated type with mechanical joint ends, interior and exterior ferrous surfaces shall be epoxy coated, iron disc with epoxy coating and replaceable steel reinforced rubber seat. 2. Valves are to have double O-ring seal stuffing box and a non-rising stem. Valves shall have a 2-inch operating nut and shall open left. 3. Valves shall have mechanical joint ends. 4. The valves shall be designed for 200 psi working pressure and 400 psi test pressure and conform to the latest AWWA Standard C-509. 5. Valves shall be as manufactured by Mueller Inc., # A-2360-23., or approved equal. 2. Item #3-2 HYDRANTS A. Materials 1. Furnish fire hydrants in compliance with the specification in quantities as ordered. 2. Individual estimated quantities are itemized on the bid form. B. Fire Hydrants 1. All fire hydrants shall comply in all respects to the latest AWWA Standard C-502 and the following design standards. 2. Fire hydrants shall be of the compression type, closing with the line pressure and have a 5 1/4 " valve opening. 3. The hydrant shall be equipped with two 2 1/2" hose nozzles and one 4 1/2" steamer nozzle, National Standard Threads, with 1 1/2" pentagonal nuts. 4. The depth of bury shall be 5' - 5 1/2'. 5. Design Features a) The operating nut shall be a one-piece bronze casting with a cast iron weather shield. The operating nut to be a NS, measure 1 1/2 to flat with minimum height of one inch. Pressure seals or dirt seals making contact with the operating nut shall be protected from changing climatic conditions by the weather shield attached to the operating nut in an allowed manner. The thrust collar will be an integral cast part of the operating nut above which will be fitted an anti-friction device. The hydrant shall open left. b) All threaded and metal to metal bearing surfaces in the bonnet shall be sealed away from the line pressure by no less than two "O" Rings. The first of which will act as a wiper and dirt seal, the other as a pressure seal. c) The upper barrel shall include two hose nozzles and one pumper nozzle located on the same plane, with the center line of the steamer nozzle at least 18" from the ground line mark on the lower barrel. d) The hose and pumper nozzle size and threading shall be the same as those in the existing system and locked in place by a stainless steel pin or screw. In the case of threaded construction "O" rings will be used as pressure seals. e) Hydrant to be dry top design with factory lubricated operating mechanism with provisions to field check for the need of lubrication and an external means to lubricate the operating mechanism without removal of bonnet. Parts to be lubricated shall include antifriction device, thrust collar, stem threads, bronze stem sleeve and stem pressure seal. Type of lubricant shall be oil suitable for a temperature range of -40oF to +150oF. f) Upper and lower barrel flanges (except those designed to break on traffic impact) are to be integrally cast. Wall thickness of upper and lower barrels to be no less than those called for by the latest AWWA Standard C-502 under Table II (Statically Cast Iron) Ductile iron for lower barrel construction is not an acceptable material. g) That part of the top operating stem which passes through the bonnet "O" Rings will be encased in brass with a rubber "O" Ring seal between the stem surface and the brass sleeve near the lower end of the sleeve.
