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SANDWICH® Valves 

 
SANDWICH® Valves are designed for use with TDW Tapping Machines, TDW STOPPLE® Plugging Machines, and fittings with LOCK-O-RING® Flanges during hot tapping and plugging operations. SANDWICH® Valves have flat-faced, serrated gasket surfaces and are supplied to match ASME Class 150, 300, 400 or 600 flanges. SHORTSTOPP® 500 requires the use of 4” through 12” ASME Class 300 SANDWICH® Valves.
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