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Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F16
ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
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F16K
VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
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47/00
Means in valves for absorbing fluid energy
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F16K47/08
for decreasing pressure; or noise level; and having a throttling member separate from the closure member; , e.g. screens, slots, labyrinths
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F16K47/12
the throttling channel being of helical form
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