公开(公告)号：JP2002349739A

公开(公告)日：2002-12-04

申请号：JP2001377368

申请日：2001-12-11

Applicant: SAINT GOBAIN PERFORMANCE PLAST

Inventor： RENN DANIEL JOHN ,  JACOBS STEVEN

IPC: B65D43/14 ,  B65D53/02 ,  F16K27/00 ,  F16K27/12

Abstract: PROBLEM TO BE SOLVED: To provide a valve box that comprises a housing including an inner chamber extending axially through the housing from a housing base. SOLUTION: The chamber has a diameter defined by a housing sidewall surface extending outward from the base to form a chamber opening. The chamber opening includes a sealing surface positioned radially inward. The valve box includes a cover arranged over the chamber opening. The cover includes a concave center section and a sealing surface. The cover sealing surface is positioned radially toward the chamber and is opposed to the chamber opening sealing surface. An annular seal is interposed between the chamber surface and the cover sealing surface. The chamber surface and the cover sealing surfaces are positioned perpendicularly to the chamber opening so that pressure in the chamber causes the concave center portion to apply a radially outward pressure to the cover and compress the annular seal further to ensure an antileak seal.