PNEUMATIC CYLINDER ACTUATORS, SERIES B0 pages

PNEUMATIC CYLINDER
ACTUATORS, SERIES B
Metso's Neles double acting and spring return B-Series
piston type actuators are designed for use in both
modulating control and on-off service. The series B1C and
B1J are designed to ISO 5211/1 when Metso linkages are
utilized. These actuators offer an extremely long cycle life
and are well suited to operate almost any type of rotary
valve.
When "stay put" is the requirement, the double acting
B1C series is the choice. This series is available in several
sizes with torque outputs from 40 Nm to 100 000 Nm
(29.5 lbf ft to 73 756 lbf ft) for maximum supply pressure
of 10 bar (145 psi).
If a failure mode is required, the spring return B1J series
should be selected. This line offers a self-contained spring
cartridge to provide failure in either the open or closed
position. The spring return actuators are available with a
mid-range spring for a 4 bar (58 psi) supply range, a
lighter spring for lower supply pressure of 3 bar (44 psi)
range and a stronger spring for a 5.5 bar (80 psi) range.
These actuators offer torque outputs from 25 Nm to
12000 Nm (18,5 lbf ft to 8851 lbf ft) for maximum supply
pressure of 8.5 bar (124 psi).

Adjustable travel stops

High-and-low temperature construction

As with any Neles pneumatic/hydraulic actuator, adjustable travel stops are standard for both the open and closed
positions. End of stroke turning angle range is 85° to 95°.
Optional travel stops 0° to 90° are also available.

The standard unit can be used in temperatures up to 70 °C
(158 °F). High temperature construction is available for
temperatures up to 120 °C (248 °F). The standard unit can
be used down to -20 °C (-4 °F). A low temperature design
is available for -40° to +70 °C (-40° to 158 °F ).

Wear resistant bearings
High quality bearings provide support on the upper and
lower portions of the lever arm to reduce friction and
expand the life of both the lever arm and the housing.

Corrosion resistance
The epoxy painted actuators have housings of rugged
cast iron, with light-weight aluminum cylinders anodized
for added corrosion resistance. Travel stops are stainless
steel.

Self-contained spring cartridge
The springs in the B1J actuator are contained in a cartridge for added reliability and easy maintenance.

Spring to open or close capability

For applications where very fast and high sequency operation is required.

ATEX compatibility
Actuator construction ATEX approved.

Oversized cylinder options
The oversized cylinders (B1C 60, 75, 602, 752) are used
whenever the supply pressure is limited, thus the actuators can achieve the required torques with a lower supply
pressure level.

Override options
Available override devices include a manual centerpiece
handle, a manual handwheel override, and a manual
hydraulic override for high torque applications.

Emergency shut-down
Emergency Shut-Down (ESD) valves utilizing B1J actuators are offered to assure operation in the event of a fire or
plant malfunction. The ESD device enables valve operational testing without cycling, see bulletin 6B21.

6 B 20 EN • 10/2013

The standard spring return actuator on the ball valve can
provide spring-to-close or spring-to-open operation simply by changing the mounting position by 90°. On a high
performance butterfly valve, the standard unit offers
spring-to-close operation. An optional B1JA model is
available for spring-to-open requirements.

High cycle option