Parker-hannifin Corporation

Peter J Davis

Walter O Krause

A fluid indicator for viewing the condition of refrigerant flowing therethrough includes a brass body (12) having a cylindrical extending portion (26). The cylindrical extending portion includes a recess (30) bounded by a deflectable wall (28). An aperture (14) which includes a transparent glass pane (36) surrounded by a steel ring (38) is mounted in the recess and fixed therein by braze material. Tubes (16, 18) are brazeable into coupling portions (20, 22) of the body, and the fluid tight character of the indicator is unaffected despite failure to use a chill block, wet rag or other cooling device during the brazing operations.

Growing community of inventors

Newark, NY, United States of America

Peter J Davis