|
Description:
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"
(100mm through 304mm) ASME Class 300 SANDWICH Valves. TDW SANDWICH Valves average 75% less total face-to-face dimensions than conventional valves, which means less installation time and easier handling and functioning in tight places where other equipment would be difficult or impossible to use.
The SANDWICH Valve is bidirectional and can be installed on the fitting in any direction as long as the bore of the valve is in line with the fitting bore. The valve can be oriented parallel or perpendicular to the pipeline to fit the excavation.
Other design features of the SANDWICH Valve include an oversized bore, positive shutoff, a built-in pressure equalizing valve and integral flange studs.
TDW's line of distribution valves is designed for use with the SHORTSTOPP® Plugging Systems for Hot Tapping and SHORTSTOPP® Plugging Operations.
|
