| 单词 | pot-lid valve |
| 释义 | > as lemmaspot-lid valve 4. In full pot-lid valve. A valve having the form of a cap fitting over a hole or the end of a pipe, etc. Also: the cover of the air pump of a steam engine. Now rare. ΘΚΠ society > occupation and work > equipment > machine > parts of machines > control(s) > [noun] > valve > others washer1596 turncock1702 air cock1709 Jack-in-the-box1728 runner1754 stop-valve1829 three-way cock1838 ball valve1839 relief valve1846 poppet valve1851 plunger valve1854 pot-lid1856 reflux valve1857 screw-down1864 mica valve1880 tide flap1884 tube-valve1884 swing-tap1892 relay valve1894 Schrader1895 pilot valve1900 mixer valve1904 spool valve1908 spill valve1922 safety valving1930 three-way1939 society > occupation and work > equipment > machine > machines which impart power > engine > steam engine > [noun] > parts of > other parts fire door1765 hand gear1805 throat pipe1824 cataract1832 cut-off1849 coil1852 pot-lid1856 main centre1858 trunk1859 piston sleeve1872 1856 J. Bourne Steam Engine (rev. ed.) viii. 300 In slow moving engines the bucket valve is generally of the spindle or pot-lid kind. a1877 E. H. Knight Pract. Dict. Mech. II. 1777/1 Pot-lid Valve. 1. A cap-formed valve which shuts down like a cover upon a port or the end of a pipe. 2. The cover of the air-pump of a steam-engine. 1891 R. Routledge Discov. & Inventions 19th Cent. (ed. 8) 8 The slide-valve is not moved, like the old pot-lid valves, against the pressure of the steam. 2003 Re: (permaculture) worm troubles in permaculture at lists.ibiblio.org (Email list) 19 Dec. How about putting a hinged pot-lid on your vent stack? < as lemmas |
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