MRC:
A recording of the physical,functional,and performance characteristics for an item of supply.TEXT
General Description:
Compressed air operated; operating valve data, valve integral w/siren body, inlet connection, flange, style no. 3, section b, ref dwg group 43, 1 in. Pipe size, flanged connection, 4-5/8 in. Od, 17/32 in. Thk, 3-1/4 in. Bolt circle, 4 holes, 3/4 in. Diameter holes; pressure data, 75 to 125 psi pressure range, 200 psi hydrostatic test pressure; projector horn data, 90 degrees angle horn, 6-3/8 in. Diameter of horn opening; valve bronze; finish a/a; mtg data, vertical mtg w/horn up, flange mounted; over-all dim., 15-3/4 in. H, 6-3/4 in. W; data regarding a typical mfr, star brass mfg co, boston, mass, code no. 57072, part no. A-6970; for general purpose use
