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PNEUMATIC ACTUATORS SINGLE & DOUBLE ACTING The SPS & SPD series, heavy duty high performance design actuators, are for ProControl the long-standing products of the range. The reliability and firmness that distinguish them arise from a constant innovation research combined with the experience gained over the years.
CATEGORY: PNEUMATIC ACTUATOR
TYPE:
QUARTER TURN
Fabricated
entirely from carbon steel.
Totally
enclosed weatherproof housing.
Scotch
yoke mechanism to suit valve torque requirements.
Relief
vent to expel undesired overpressure.
Low
pressure pneumatic cylinder for supply pressures up to 12 bar design suitable
for instrument air or sweet / inert gas applications or special application
with material according to NACE requirements for sour gas supply medium.
Carbon
steel piston with dynamic floating O-ring seals coupled with lubricating piston
guide rings.
Carbon
steel spring cartridge (only for single acting) with safety facility which
allows safe installation and removal of the whole cartridge assembly.
AISI
316SS mechanical position indicator (fully sealed IP68 to avoid ingress into
the scotch yoke area) complete with VDI/VDE 3845 NAMUR drive slot for
monitoring devices.
Bronze
sliding blocks which ensure minimum friction, allowing for a long service life
and reducing maintenance costs.
Bronze
thrust bearings and high strength alloy steel chromium plated thrust reaction
bar which guides the scotch yoke throughout its stroke and supports all
transverse loads generated.
ASTM
A 320 L7 alloy steel tie rods, with standard electrolytic zinc coating
according to ASTM B633 FeZn 12 (thickness 12μm).
Alloy
steel end travel stops allow for accurate angular stroke adjustment.
Integral
manual override facilities.
Design
allows 4 x 90° actuator rotation.
TECHNICAL SPECIFICATIONS
Supply
pressure up to 12 bar design.
Actuator
torque output up to 1.000.000 Nm for single acting and up to 2.000.000 Nm for
double acting.
Spring
starting torque up to 400.000 Nm.
Spring
ending torque up to 250.000 Nm.
Standard
operating temperature range -30°C / +100°C.
Special
low temperature application up to -60°C.
Special
high temperature application up to +200°C.
All
ProControl pressure containing parts are designed according to ASME VIII div.1
and EN 13445.
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