Butt-Weld Bulletin Archive
G359a - Jan 1999.pdf
G359b - Jan 2003.pdf
G359c - Aug 2011.pdf
G359d - Feb 2013.pdf
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Hansen low pressure drop refrigerant shut-off valves are designed to be butt-welded directly to steel piping, thereby eliminating potential leaky flanges or threaded joints and simplifying installation. Cast steel bodies are lightweight, yet have substantial wall thickness to overcome corrosion potential.
The cast steel body is rigid, reducing the potential for seat leakage due to flexing of the valve body under abnormal conditions. The “heart” of Hansen shut-off valves is the patented no-leak seal-plus-stempacking design. This seal design is used exclusively on Hansen shut-off valves and virtually eliminates stem seal leakage.