Fisherr 8560 Eccentric Disc
Butterfly Control Valve
Fisher 8560 high-performance valves feature a
stainless steel disc with a soft or stainless steel seal
ring. Soft seals provide excellent sealing capabilities in
both directions. The pressure-assisted metal seal ring
provides excellent shutoff against pressure applied in
the recommended flow direction for both liquid and
The NOVEX and Phoenix III metal seals are available for
demanding applications requiring excellent shutoff
capabilities. The splined-shaft valve combines with a
variety of power actuators to form a reliable,
applications requiring extremely low leakage rates.
Unless otherwise noted, all NACE references are to
with pressure assisting action (see figure 1) results
in exceptional shutoff per Class VI.
Excellent Flow Control–The eccentrically- mounted
disc design provides an approximate linear flow
characteristic and can be used for throttling or
on/off control applications through 90 degrees of
Sour Service Capability–Trim and bolting materials
are available for applications involving sour service.
These constructions comply with the
recommendations of NACE MR0175-2002.
Improved Environmental Capabilities–The optional
improved sealing, guiding, and loading force
transmission. The ENVIRO-SEAL packing system can
control emissions to below the EPA (Environmental
Fisher 8560 Valve with 1052 Actuator and FIELDVUEt
DVC6200 Digital Valve Controller
Fisher 8560 Single-Flange Valve
Protection Agency) limit of 100 ppm (parts per
million) for valves.
Integral Shaft-to-Body Bonding–Standard valve
construction includes conductive packing to
provide electrical bonding for hazardous area
Low Cost Maintenance–Individual disc/shaft
components can be replaced after disassembly due
to sleeve and taper pin connections (see figure 1).