| 摘要 |
<p num="1"><br/>21-56(5535)A<br/> CONTROL REGULATOR HAVING A FABRIC REINFORCED DIAPHRAGM<br/> ABSTRACT OF THE DISCLOSURE<br/>A rolling diaphragm regulator valve is<br/>affixed in a globe type valve body and includes a<br/>nonstretchable fabric reinforced elastomer diaphragm<br/>for covering and uncovering, by rolling action in<br/>response to changes in pressure in a control chamber,<br/>a plurality of apertures in a baffle positioned<br/>between the valve body inlet and outlet. An axially<br/>movable spring-biased nose piece, mounted behind the<br/>diaphragm, provides a surface over which the diaphragm<br/>is draped for controlling substantially all movement<br/>of the diaphragm. A travel indicator is operable by<br/>movement of the nose piece to provide a visual<br/>indication of the position of the valve. In one<br/>embodiment the baffle is notched adjacent to a<br/>peripheral mounting surface of the diaphragm, whereat<br/>the ends of the fabric reinforcement are exposed to<br/>permit entrained gases to escape. Other embodiments<br/>include areas of the diaphragm, exposed to the<br/>apertures, that have pinholes in the elastomer surface<br/>and that have the fabric surface exposed.<br/> |
