• Shut system down & drain on a daily basis • Remove & replace all existing pipe, fittings, couplings, gaskets, sprinkler heads, etc. on a piece by piece basis so as to not leave any portion of the system down overnight • All pipe 2" & smaller will be sch 40 black with cast iron fittings • All pipe 2 1/2" & larger will be sch 10 galvanized pipe with orange flush seal couplings & victaulic fittings • Relocate 4" main under the bleachers on field level to lower end & orient it so that all risers drain back to the main • Pitch 4" main from center out to each end & run pipe for a low point into the dugout • Install new drum drip heater cabinet AGF model 5500a automatic drain quantity x 2 to be located in each dugout • Remove existing standard pressure dry pipe valve quantity x 2 • Install new victaulic model S-768 4" dry pipe valve pre-trimmed with butterfly control valve quantity x 2 • Install new General nitrogen generator model NGP-1000D-M3-6A-50 quantity x 1 • Install new amd-1 regulated air maintenance device for each dry pipe valve quantity x 2 • Install new general model BGP-PV-1 manual purge vent for each dry pipe valve quantity x 2
