| 摘要 |
<p>955,475. Valves. A. M. MOEN. Aug. 4, 1960 [Feb. 3, 1960], No. 27097/60. Heading F2V. A valve for controlling the flow of liquids comprises a housing 1, Figs. 1 and 2, with inlet openings 3, 4 and an outlet opening 5 and a removable valve cartridge positioned within the housing, the cartridge having a sleeve 11 with inlet and outlet passages passing through it to co-operate with passages 27, 28 leading to and from the interior 26 of a hollow valve stem which may rotate and reciprocate within the sleeve. The sleeve is secured, to the housing 1 by a key 10 and contains a lock ring 34 to cooperate with snap rings 32 on the valve stem to limit axial movement. O-rings are provided between the stem and the sleeve, a vent 21 permitting escape of air, and between the sleeve and the housing, one 0-ring, 17, being inclined to separate the ports 3, 4 which may supply hot and cold water to an inlet port 27 in the stem after the latter has been upwardly displaced from the position shown. From the interior of the stem the water flows through ports 28 annular recesses 19, 29 and ports 30 to the outlet port 5. Angular movement of the stem varies the extent to which the port 27 is in register with the ports 3 and 4 and hence the temperature at the outlet. The ring 17 may be replaced by a pair of horizontal rings connected by vertical sealing strips to separate the ports 3, 4 while the interior of the valve stem may contain a tube to permit fluid to escape from the lower part of the housing 1 to the annular space between the stem and the top of the sleeve. In a further modification the inlet and outlet ports in the valve stem are formed by a circumferential series of rectangular apertures and a single circular opening respectively while the sleeve is made of metal or plastic of thin sections and has its inlet ports 3, 4 sealed by rubber or rubberlike circular packings to which it may be bonded. The sleeve may also be perforated to permit penetration by one of the seals with the housing. A handle 193, Fig. 15, is connected by a screw 194 to a tapped hole 25 in the valve stem and is fitted with a plate 195 held in place by spring fingers 195a. A pointer 196 on the handle cooperates with an escutcheon 191 engaged by a bead on a stop tube 190 surrounding the valve housing. A diverter valve 176 may be opened to supply a bath tap 171 instead of a shower head 185.</p> |
