Electric and pneumatic valve actuators with a wide variety of control options and features.
We offer the following five types of electrically operated valve actuators, use the links in the summary below to view the webpage for that specific actuator model. Each webpage has links to the corresponding datasheets.
EAU
valve actuators area an entry-level design for simple on/off
control of ball valves up to 2" in size. The base model operates on
120vac, has a break and 1 SPDT limit switch. Options include other voltages (12V A/D, 24V A/D and 220VAC) and SS
tags. The EAU series is designed for light duty ball
valve applications that do not require a manual override.
HZSN1
valve actuators are designed for ball vales up to 2" or requiring shaft
torque of ≤
ECP
valve actuators
actuators output up to 796 in-lbs of shaft torque and are
used for ball and butterfly valves up to 6". These can be used for
on/off and proportional control applications, they have an auto ranging
power supply to recognize the input voltage within a range of
24-265 VAC/VDC to simplify installation. Its a quality, industrial
valve actuator having an anti-condensation heater, manual override,
position indicator, 2 SPDT AUX switches and thermal overload protection.
HRSN
valve actuators are our premier industrial valve actuator design,
providing the most features and options. There are three basic variations,
on/off and proportional control, hazardous location and localized control
(enables programming and control separate from any network). As with
all of our actuators, the mount is compatible with ISO5211 valve mounting
pads and the auto ranging power supply recognizes the input power
automatically, simplifying the installation.
ProTorq
valve actuators deliver up to 40,500 in-lbs of shaft torque
and its our only electric valve actuator which can be
supplied with a
spring return
for applications requiring up to 2,300 in-lbs of shaft
torque. These are compatible with input control voltages of
4-20mA, 2-10vdc and 1-5vdc (BUS networking interfacing can
also be accommodated)
Hayward's pneumatic valve actuators for ball and
butterfly valves are compatible with 1/2" to 24" size valves
having ISO 5211 mounting tab. Variations include
thermal plastic or aluminum housings, double acting and
spring return (fail safe) designs. Their product
offering consists of two styles, the PC (4-piston rack and
pinion design, "Compact") and PM versions (2-piston rack and
pinion design. Hayward's pneumatic actuator offering
is tailored to their plastic ball and butterfly valve
product offering and maximum of 31,500 lbs torque.
Flotite's pneumatic valve actuators are comprised of a
broader product offering called Air-Con, to be used with
their alloy ball valves or any other actuation application
requiring up to 1,585,800 lbs of torque. Having an
aluminum housing as standard, they can be epoxy powder
coated or supplied in 316SS or electroless nickel plating
for increased corrosion resistance. We generally use these
actuators when paired with an alloy valve or when many
accessories are required for enhanced control.
Scotch Yoke pneumatic valve actuators typically cost
less than rack and pinion style actuators and output higher
torque; the primary difference between the two styles is the
Scotch Yoke style outputs a non-linear torque and thus
better suited for butterfly valves whereas rack and pinion
designs output a constant torque required for ball valve
positioning and throttling applications. Scotch Yoke
style pneumatic actuators are physically larger and for
those reasons typically used for large butterfly valves to
minimize actuator cost.
Pneumatic Piston Valve Actuators
are similar to Scotch
Yoke style actuators; air moves the piston and linkage
converts linear motion to 90 degree rotary motion and the
resulting torque is highest at its fully closed and fully
opened positions - ideal for butterfly valves.
Pneumatic Piston Actuators have less features and thus less
expensive than Scotch Yoke style actuators and also tend to
better suited for extremely low "artic" temperatures.
Rotary diaphragm actuators are often used for lower air
pressure applications or when actuation by other inert gases
or non-compressible fluids such as water and oil is
preferred. They can be field swapped to fail opened or
closed and positioned within 60-95 degrees of rotation and
thus often used for flow control applications. They
are also used for non-valve applications because they can be
configured as direct acting, where the air or hydraulic
liquid pushes the actuator stem outward.
When you order an actuator and actuator-ready valve together, it will be assembled for free, meaning we include the mounting kit (if applicable) and assemble everything together so that it arrives as one unit ready for installation.