| 单词 | relief valve |
| 释义 | > as lemmasrelief valve relief valve n. a valve serving to relieve pressure in a system when it becomes too high by opening to allow the escape of gas, water, steam, etc. 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 1846 L. Herbert Engineer's & Mechanic's Encycl. II. 686 The brass bearings are fixed in a boss in the centre of the beam; m the air-pump; n the foot-valve..r the connexion with the relief valve. 1919 L. H. Morrison Oil Engines xii. 206 As a safeguard, the discharge line should be equipped with an oil separator and relief valve. 1991 Chem. Engineer 13 June 28/2 If your water curtains, fire pumps, relief valves, and so on are not adequately maintained they may fail when they are needed. < as lemmas |
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