Mueller Model 791-SA Cast Iron Duplex Strainer

SERVICE RECOMMENDATIONS
Mueller Steam Specialty Ball-Plex Duplex Strainers are designed for use in fl uid
handling systems where the fl ow cannot be shut down for basket cleaning such as
cooling water, compressors, condensers, fi re lines, fuel lines, lubrication systems,
salt and fresh water systems, chemical process systems and pump suction service.
FEATURES
The Mueller Steam Specialty Ball-Plex Duplex Strainers use 3-way balls as diverter
valves. This design, with its PTFE seats, provides drop-tight shut-off, eliminating the
costly and potentially dangerous leakage into the chamber not in use. The two part
body casting allows true-in-line maintainability. All parts of the valve are accessible
after removing the basket chamber without removing the strainer from the line. On
models with a handle, the chamber in use is covered by the handle preventing
accidental opening of the pressurized chamber and allowing easy access to the side
to be serviced.
BASKETS
The large open area ratio of the basket ensures a minimum pressure drop across
the unit. Perforated stainless steel baskets are standard on all models unless
otherwise specifi ed. See page E-3 for pressure drop fi gures.
WATER: Thru 3” 1/16” (.062)
MATERIAL
Body Cast Iron ASTM A126-B
Cover Cast Iron ASTM A126-B
Seats PTFE
O-rings Buna N