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SB Series Actuator Sizing Examples
EXAMPLE 1
Valve Desired: 24Z-SB24L-PF-T-SS
Actuator Desired: Spring Return, Normally Closed
Differential Pressure: 250 psig
Minimum Air Supply Pressure: 80 psig
Service: On-off
Media: Raw Water
Calculation
From the PF Seal Pressure-Torque graph on page 7:
Torque at 250 psig = 170 in-lb
Service Factor from page 6:
Multiplier = 1.00
Media Factor from page 6:
Multiplier = 1.80
Application Operating Torque =
Operating Torque x Application Factor =
170 in-lb x 1.00 x 1.80 = 306 in-lb
From the AC Spring Torques on page 8, proceed down the
table looking for a torque exceeding 306 in-lb. The 65AC-6
meets the requirement, but the Air Torque at 80 psig does not.
Repeat this step to find a larger actuator. The next actuator in
the table to meet both requirements is the 66AC-4.
Valve Model: 24Z-SB24L-PF-T-SS-66AC-4
EXAMPLE 2
Valve Desired: 12A-SB12L-T-SS
Actuator Desired: Spring Return, Normally Open
Differential Pressure: 400 psig
Minimum Air Supply Pressure: 60 psig
Service: -20 ˚F
Media: Dirty Gas
Calculation
From the T Seal Pressure-Torque graph on page 7:
Torque at 400 psig = 30 in-lb
Service Factor from page 6:
Multiplier = 1.25
Media Factor from page 6:
Multiplier = 1.50
Application Operating Torque =
Operating Torque x Application Factor =
30 in-lb x 1.25 x 1.50 = 57 in-lb
From the AC Spring Torques on page 8, proceed down the
table looking for a torque exceeding 57 in-lb. The 62AO-3
meets the requirement for both Spring Torque and Air
Torque.
Valve Model: 12A-SB12L-T-SS-66AO-3
How to Order Actuators
Factory Assembled
Add the actuator model designation as a suffix to the ball valve part number.
Example: 4Z-B6LJ2-SSP-61AC-2. Describes a B6 ball valve with a normally closed actuator.
For Field Assembly
Simply specify the actuator. Example: 65AC-3. Mounting bracket kits are required when mounting actuators to valves.
Options
High Temperature Seals – Extends the high temperature from 175 ˚F (79 ˚C) to 250 ˚F (121 ˚C) and to 400 ˚F (204 ˚C) on
special Series 62 and 63 90˚ models.
Low Temperature Seals – Extends the low temperature from –4 ˚F (-20 ˚C) to –40 ˚F (-40 ˚C).
Solenoid Valve (Single coil) – Mounts directly to the actuator inlet manifold. NEMA 4 or 7 housings with voltages of 120, 24,
and 240 VAC. A manual override is standard.
Limit Switch – Fully enclosed, heavy duty rotary limit switch package with visual valve position indicator. Available with NEMA
4, 7, and 9 housings. Two pre-wired SPDT switches, hermetically sealed REED switch, inductive sensors, and potentiometer.
Breather Block – A direct mount diverter module redirects instrument quality air to the spring chamber during the spring
stroke (fail stroke) of AC and AO actuators. Ideal for corrosive, wet, or dusty environments. Also improves spring stroke
speed and allows the solenoid valve to be mounted to it.
Dual Mount Actuator – Two valves may be actuated with a single actuator. Available with both valves open, both closed, or
one open and one closed.
Parker Hannifin Corporation
Instrumentation Valve Division
Jacksonville, Alabama
Pneumatic Actuators
10
NOTE: Parker pneumatically actuated B Series Ball Valves should be ordered with elastometric stem packing and seals or
the optional live-loaded PTFE packing. This reduces the need for any furthur packing adjustment after receipt from the
factory.