FIG955
FIG 955 is a knife gate valve specially designed for use as isolation valve for silos
handling powders. The body design includes a large relieved area (see sketch
below) on the downstream side that can accommodate some material
accumulation without affecting the closing operation of the valve. As these
valves are typically mounted with seat facing downward under silo, the body is
provided with large cast guides to support the material load on the gate. This
design uses a thinner gate than standard knife gate valves as same is sufficient for
the typical gravity flow situations where such valves are used.
With flanged ends, the downstream piping can be removed easily for
maintenance with the valve held under silo with only upstream bolting. FIG 955
also utilizes a flat edged gate with beveled corners (see sketch below) that helps
to cut through accumulated powder. The valve is designed to be dust tight but is
not recommended for liquid flow situations requiring tight shut-off.
TYPICAL APPLICATIONS
• Gravity flow silo isolation SPECIFICATIONS TYPE: Uni-directional knife gate valve
SIZE RANGE: 100,150,200,250 & 300mm
PRESSURE RATING: CWP-5 bar (75 psi)
ENDSTYLE : Flanged
FACE-TO FACE : Proprietary (dimensions are higher than MSS SP-81 specifications)
DRILLING : Proprietary; other feasible drilling standards on request.
BODY : Cast iron
SEAT : Integral metal seat
GATE : 304stainless steel plated is standard; others on request
STEM : 304 st. steel standard; others on request
SUPERSTRUCTURE : Steel channel fabrication, epoxy coated standard
ACTUATOR OPTIONS : Direct mounted rising stem hand wheel is standard; chain wheel, pneumatic actuator and other options available
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