For pumping a well a valved working-barrel with valved sucker is attached to the lower end of the tubing, a perforated " anchor " being placed below.
Following the suggestion of Cavendish, Irving made observations of deep temperature on Phipps's Spitsbergen voyage of 1773 with a valved water-bottle, insulated by non-conducting material.
On either side of the ventricle, in the primitive condition, is a thinwalled auricle, opening into the ventricle by a valved opening.
The water is admitted by valved sluices, which open as the tide flows into the field and shut by the pressure of the confined water when the tide recedes.
Irving was anxious to prove the superiority of the new radial valved Python engine, and entered an outfit in the 1932 Lands End.