| 摘要 |
<p>The water valve has a hot to cold water ratio which, once set, need not be changed. The valve comprises a tube (1) in which a piston (2) slides. Oval openings into the tube are connected to the hot and cold inlet pipes. The flow rate is varied from zero to full flow by varying the position of the piston. The outlet from the tube is connected to one of two outlets (4,5) selected by the position of a second piston relative to inlet and outlet ports in a second tube.</p> |
