| 31. | These are simple poppet valves, operating by direct float action and sealing against the upper valve seat.
|
| 32. | She is his " petty-pie "; he is her " poppet ."
|
| 33. | The rocket is fired when the computer sends direct current through a small electromagnet that opens the poppet valve.
|
| 34. | Abigail denies Mary's assertions that they are pretending, and stands by her story about the poppet.
|
| 35. | By 1939 No . 2001 had had its rotary-cam poppet-valve valvegear replaced with Walschaerts gear.
|
| 36. | Poppets have historically been used to place curses on other members of a community for religious or traditional purposes.
|
| 37. | Early designs used the D slide valve but this has been largely superseded by Piston valve or Poppet valve designs.
|
| 38. | Use of poppet valves also increased the speed because they gave very accurately-timed steam delivery to the cylinders.
|
| 39. | Additionally, smaller valve openings and longer opening times makes them less gas efficient than their poppet-valve counterparts.
|
| 40. | The poppet valves were not a great success and they all reverted to piston valve engines between 1931 and 1934.
|
