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The pneumatic actuators on the BVP/bvps80 and BVP/
BVPS 70 Series offer the latest technology for pneumatically
actuating BV80 Series ball valves with NPT threads
and BV70 Series with compression fittings. The
BVP80 and BVP70 Series are a combination of the
three key elements for long, reliable, trouble free
life–a premium quality ball valve, a quality actuator
designed to meet the torque requirements of the
valve, and a mounting system which assures
alignment and rigidity.
The BV80 and BV70 ball valves low operating torque
makes possible a compact actuator that is both
economical to install and operate. Precise machining
of all the valve components, including the seats,
controls the sealing preload. This assures bubble-tight
sealing, minimizes the operating torque and optimizes
the valve life.
The mounting system precisely couples the actuator
drive shaft to the valve stem. Additionally, the valve
stem nut is fixed within the actuator shaft. These
features combined with a rigid mounting bracket,
results in a pneumatically actuated ball valve which
minimizes backlash, assures optimum stem seal life
and eliminates any possibility of stem nut backing off
while in service.
The BVPS80 and BVPS70 Series offers a springreturn
model requiring only 50 psi supply air that can
spring to open or close without loss of output torque
from the air operated side. This is achieved by two
opposing lightweight Zytel® housed spring modules
that are fully compressed by air operated diaphragm
pistons.
All BVPS80 and BVPS70 Series are designed to
operate using an air supply of 50 to 125 psi. The air
can be delivered by direct mounting pilot valves
having NAMUR interfaces or from remote pilot valves
connected via means of 1/8" NPT female threaded
orifices in the actuator face plates.
Caution: Care must be taken to assure that the
output torque of the BVP80 Series actuator selected
is adequate to turn the valve or device to be operated.
A Limit Switch accessory is offered for the pneumatic
actuators. The BVLS limit switch is easily mounted
to any pneumatic actuator and provides a means
to remotely display valve position or to interconnect
the valve with related equipment such as pumps
or other valves.
The limit switch accessory utilizes two mechanical
S.P.D.T. (Single-Pole, Double-Throw) micro switches
that respond to actuators' fully open or fully closed
position by means of a cam fitted to the actuator top
shaft. The switches are rated at 10 amp 250 Vac max.
The limit switch is totally enclosed and may be used in
applications where a dust tight or weather tight
enclosure is required as well as in those locations
where general purpose enclosures will serve. The
housing, like our pneumatic actuators, is made from
6061-T6 aluminum and has a PTFE impregnated
hard-anodized surfaces to enhance corrosion
resistance.
The BVE80 and BVE70 Series electric actuated ball
valves are a compact mounting system that assures
rigid and precise coupling of the actuator to the valve.
The unique system features machined alignment
brackets oriented with precision locator elements that
serve to absorb the reaction torque independent of
the mounting bolts. The end result is a system that
eliminates the common problem of the mounting bolts
loosening while in service. Additional features include
thermal overload protection and manual override.
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