2008-276 D - Laserfiche WebLink

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that meets ASTM D429 . The stem shall be cast bronze and have an integral thrust collar with a Deh in thrust bearing above and below the collar. The gate valve shall have two 0- rings set in machined grooves in the seal plate. The stem seal plate shall have an O-ring gasket to seal against the bonnet secured with bolts and nuts. The body, bonnet, and seal plate shall have a factory -applied thermoplastic epoxy coating on all interior and exterior surfaces . All internal parts shall be accessible for repair or maintenance without removing the body from the line . Valve shall be Style 4067 as manufactured by M&H Valve Co . , Metroseal 250 as manufactured by U . S . Pipe , American-Darling or Clow . B . A geared side - mounted actuator with 2 " operating shall be used where a top mount operator will not have adequate cover . Contractor to confirm prior to ordering valve . 2 . 10 CHECK VALVES A. High Service Pump The Globe Style Silent Check Valves shall be fully automatic, spring loaded, and guided disc . The valve shall open as the pump starts to closed just prior to flow reversal upon pump outage . The valve shall have a cast iron body, bronze seat, disc and bushing and stainless steel spring . All internal parts shall be field replaceable for ease of maintenance . The valve shall be model GC as manufactured by Multiplex Manufacturing Co . , CRISPIN Valve Div. , Berwick, PA . 2 . 11 AIR RELEASE VALVE A. Air release valves shall be the type to automatically exhaust large quantities of air during filling and allow air to re-enter when draining or subject to a negative pressure . B . Valve shall be 1 " with N .P .T. threaded inlet and outlet. The valve body shall be cast iron . The float, internal float guides and trim shall be 316 stainless steel. The seat shall be BUNA-N . C . Valve shall be manufactured by Crispin, Valmatic or approved equal 2 . 12 PIPE COUPLINGS A. Couplings shall be EPDM gasketed, sleeve-type, with diameter to fit existing pipe. Coupling shall include a steel middle ring, follower rings, wedge-section gaskets and truck head type steel bolts . Couplings shall be manufactured by Dresser, or equal . 2 . 13 TAPPING SLEEVE & VALVE A. Tapping sleeve shall be 304 stainless steel with flanged outlet and 304 stainless steel bolts. Sleeve shall be JCM #432, Smith/Blair (Rockwell) #662, Ford Fast, or equal. All sleeves shall have a minimum working pressure of 150 psi. All taps shall be machine drilled, no burned taps will be allowed B . Tapping valves shall be resilient seat type with a flanged joint on the inlet side and a mechanical joint on the discharge side of the valve. Tapping valves shall have a 2-inch operating nut. Working pressure rating shall not be less than 200 psi . Gaskets between the I 044572017 15100-8