| 摘要 |
<p>A connector adapted for a quick connection to and for sealing and filling a valv e assembly, such as a Schraeder Valve. The connector provides a secondary containment featur e which prevents leakage when removing the connector, thereby improving performance and efficiency. The connector includes a collet member at one end that fits over the threaded portion of the valve assembly and, when closed, compresses a seal that engages t he external threads of the valve, thereby elimination the need for threading an external fit ting on the valve assembly. As the system pressure increases, an internal plunger, having a forward flow orifice and a rear inlet orifice, in axially displaced and depresses the va lve assembly stem. Simultaneously, the forward orifice passes ahead of an internal O-ring and allows fluid flow. As pressure is relieved from the system, the plunger and forward flo w orifice move behind the internal O-ring and seal the piston chamber, thereby preventing leakage when removing the connector.</p> |
