ae Vol. XXX.—No. $3 per Annum (NEW SERIES.! IN ADVANCE. … CASEMENT’S PRESSURE REGULATOR FOR FLUIDS. gravity would bring the valve to its seat, closing the orifice and secured between the couplings by a flange and packing In describing the invention of which our illustrations de- and preventing further escape, until the pressure above once rings, is a…
Internet Archive · Public domain (published before 1931). Free to use for anything.
