| http://www.w3.org/ns/prov#value | - as tank, including reducer and regulator means with indexed flowmeter valve); U.S. Pat. No. 2,793,504 to Webster (valve for pressurized fluid container including pressure reducer and regulator and spring bias closure means); U.S. Pat. No. 1,659,263 to Harris (regulator for pressurized gas cylinder including a diaphragm and anti-friction washer between diaphragm and annular seat of regulator); U.S.
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