Safety relief fill valve assembly

US8381758B2 · kind B2 · utility

Assignee

• YSN Imports, LLC · US

Inventors

• Shmuel Dovid Newman · Redondo Beach, US
• Jeff Brown · Hyde, GB

Key dates

• Filing date: May 7, 2010
• Grant date: Feb 26, 2013
• Expiry date: May 7, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/88038
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A safety relief fill valve adapted to being an interface for filling and relieving excess pressure from a closed fluid system. An insert shell retains a piston member for movement between fluid input and fluid holding configurations, the piston member being resiliently biased toward fluid holding configuration. When in fluid holding configuration, the piston member sealingly engages an inlet bore of the insert shell. When in fluid input configuration, the piston member allows fluid flow through the inlet bore. A housing receives the insert shell, thereby limiting relative axial movement and forming a cavity between a portion of the housing the insert shell. This cavity provides mechanical guidance and a flow channel for an overpressure relief system having fluid retaining and fluid relief configurations, the overpressure relief system being elastically biased toward fluid retaining configuration. The elastic bias is overcome responsive to excess pressure within the closed fluid system.