MSI LT VALVE TECHNICAL MANUAL
Revision D
April 03, 2014
3
1.0 FEATURES
The MSI LT Plug Valve is a lubricated, tapered pocket, quarter-turn plug valve
for rapid full open or close operation. The valve cavity is tapered to ensure uniform
seating of the sealing inserts, providing a reliable seal at the full range of pressures.
The MSI LT Plug Valve and replacement parts are engineered to provide low
operating toque and resistance to the toughest abrasive and corrosive conditions.
MSI offers more end connection choices than any other plug valve
manufacturer in the industry. Connection types such as Hammer Unions, Line Pipe,
API Flanged, Tool Joint, Clamp Hub, and our own metal-to-metal WingSeal (WS20
and WS30) are just a few of the available choices. All sizes of MSI valves can be
outfitted with your choice of end connections or combinations to suit your specific
application. Custom end-to-end lengths are also available on some valves.
Compact Design
Lightweight
Longer lasting internals
Ease of repair
Interchangeability
SafeTap
™
grease fitting
UNIs
ert™
integral insert
GreaSeal™
plug for full 360
°
greasing
Widest range of end connections in the industry
o
Hammer union (all sizes of 602, 1002, 1502, 2002, 2202)
o
API Flange & Studded (all sizes and working pressures)
o
WingSeal 20 (2.00”ID) & 30 (3.00”ID)
*metal-to-metal
o
Clamp Hub (all sizes such as B20, GR14, GR31, plus API clamp hubs)
o
Threaded Ends (all sizes of Line Pipe, EU, NU, and premium threads)
o
Tool Joint (All sizes of IF and ACME unions)
