Dyna-Flo has been supplying pneumatic actuation to the oil and gas industry for over a decade. They offer a wide variety of actuators and accessories to suit upstream, midstream, and downstream applications. When sizing actuators, Dyna-Flo considers many factors such as supply pressure, valve torque, safety factors, and application. They ensure high quality by manufacturing their own mounting hardware, and technicians mount and test all equipment before shipment.

2. DYNA-FLO HAS BEEN A VALUED PNEUMATIC ACTUATION
SUPPLIER TO THE OIL & GAS INDUSTRY FOR OVER A DECADE.
WE STARTED IN THE ESD MARKET AS A SUPPLIER TO SKID
PACKAGERS AND FABRICATORS AND DEVELOPED INTO A FULL
SERVICE AUTOMATION CENTER. WITH PRODUCTS TO SUIT
UPSTREAM, MIDSTREAM, AND DOWNSTREAM APPLICATIONS.
IN THE BEGINNING…

3. ALL THE RIGHT
TOOLS…
DYNA-FLO HAS A WIDE VARIETY OF ESD
ACTUATION AND RELATED PRODUCTS.
OUR EXPERTISE IN SIZING AND
SELECTION ALONG WITH OUR
ACTUATORS, INSTRUMENTATION, AND
MANUFACTURED MOUNTING KITS, WE
HAVE POSITIONED OURSELVES TO BE
YOUR ACTUATION COMPANY OF CHOICE.

4. AS THE PREVIOUS EXCLUSIVE
DISTRIBUTOR FOR THE RADIUS BRAND OF
ACTUATORS, WE GREW OUR REPUTATION
FOR OFFERING QUALITY ACTUATORS IN
THE INDUSTRY.
RADIUS IS A RUGGED RACK & PINION
STYLE ACTUATOR THAT HAS BEEN PROVEN
TO BE A WORK HORSE. WHILE NOT OUR
PRIMARY PNEUMATIC OFFERING NOW, WE
STILL OFFER THIS BRAND OF ACTUATOR
TO THIS DAY.
RADIUS RACK & PINION
ACTUATORS…

5. RACK & PINNION
STYLE ACTUATORS
ARE STRICTLY
DESIGNED FOR HIGH
CYCLE ON/OFF
APPLICATIONS.
THESE ACTUATORS
ARE NOT SUITED
FOR POSITIONING
OR THROTTLING
SERVICE.
VALUE BY
DESIGN…

6. SCOTCH YOKE ACTUATORS…
AS DYNA-FLO GREW IN THE ESD MARKET, THE PRODUCT
OFFERING GREW AS WELL.
WE INTRODUCED THE D-FORCE LINE OF SCOTCH YOKE
ACTUATORS. THIS ALLOWED DYNA-FLO TO COMPETE WITH OTHER
MAJOR PLAYERS IN THE INDUSTRY.

7. DYNA-FLO D-FORCE
ACTUATORS HAVE A SCOTCH
YOKE STYLE DRIVE
MECHANISM. THUS MAKING
THIS ACTUATOR VERY
VERSATILE AND WELL SUITED
FOR ON/OFF OR THROTTLING
SERVICE.
THE TORQUE RANGES EXCEED
WELL BEYOND THE RADIUS
LINE, MAKING D-FORCE
SUITABLE FOR LARGE BORE
PIPELINE SERVICE.
D-FORCE ARE ALSO USED IN
LOW PRESSURE HYDRAULIC
SELF-CONTAINED ESD
APPLICATIONS. THIS MAKES THE
D-FORCE LINE A VERY
ECONOMICAL CHOICE.
VERSATILITY…

8. PROVEN TO BE RELIABLE…
THE DYNA-FLO D-FORCE LINE HAS
BEEN INSTALLED BY MANY OF THE
MAJOR PRODUCERS IN CANADA. WHO
HAVE BEEN STANDARDIZING ON THE
BRAND AS WELL.
OUR INTERNATIONAL DISTRIBUTORS
HAVE ALSO PLACED THE ACTUTOR IN
MAJOR MARKETS AND OVERSEAS
PRODUCERS AS WELL.
CANADIAN PRODUCERS INCLUDE:
 CNRL
 HUSKY
 CENOVUS
 PENNWEST
 PENGROWTH
 PLAINS MIDSTREAM (FORMERLY BP)

9. Questions for ¼ Turn Actuation (Pneumatic)
Valve
1) Size & Pressure Class.
2) Full Port or Reg Port **Really Important**
3) Sweet or Nace Service
4) Standard or Low Temp Service.
5) Floater or Trunnion.
6) Max Differential or Shut-off Pressure. **Really Important**
7) Brand Preferred.
Actuator
1) Supply Pressure. (40, 60, 80 psi) **Really Important**
2) Fail Position. (Fail Closed 90%, Fail Open, Fail Last Double Acting only)
3) Instrumentation Required. (Solenoids, Regulators, Limit Switches,
Quick Exhaust Valves, Speed Controls, Amot 4057’s, Pilots etc…)
Notes:
 Re-seat values of most ball valves are 80% of the break torque. If you
use the break torque value as your spring end when sizing. You will have
included a 25% safety margin for sizing.
 Fail open actuators use air end instead of spring end when sizing.
 Actuators using less than 80 psi supply can be a larger size than usual.
 Actuators with less than 40 psi can be supplied up to a certain size of
torque. Be very careful when sizing these actuators. If not sure ASK!
 Large valves (8” and above) are heavy and large in size. Consideration for
handling and crating needs.
 Instrumentation like quick exhaust valves, speed controls and
other instruments are typically required for large valves.
 When quoting electrical instruments, always make sure you know what
the hazardous area classifications needed are. And, what voltage is
required. Do they need low wattage?
 WHEN IN DOUBT ASK!! NEVER GUESS.
FROM THE
CUSTOMER…
THESE QUESTIONS &
DESIGN PARAMETERS
ARE USED BY DYNA-
FLO TO GET ALL
INFORMATION
REQUIRED TO QUOTE
THE PNEUMATIC
ACTUATION NEEDED.
WE WILL ALSO TRAIN
OUR RE-SELLERS ON
ACTUATOR SIZING
AND SELECTION
UTILIZING THIS INFO.

10. SIZING
& SELECTION…
BASED ON THE
INFORMATION GATHERED
FROM THE CUSTOMER, WE
USE SEVERAL FACTORS
WHEN SIZING PNEUMATIC
ACTUATORS:
 PNEUMATIC SUPPLY
PRESSURE.
 FAIL POSITION
 TORQUE OF VALVE.
 MAX DIFFERENTIAL
PREESURE OF VALVE.
 SAFETY FACTOR
REQUIRED BY END USER.
 APPLICATION OF
ACTUATED VALVE.

11. LOW PRESSURE
SUPPLY…
WHEN SUPPLY PRESSURE IS LOW (UNDER
40 PSI) WE USE A DYNA-FLO
MANUFACTURED SPRING & DIAPHRAGM
STYLE ACTUATOR FOR A FAIL CLOSED OR
OPEN APPLICATION. AS SUPPLY PRESSURE
DECREASES, TYPICALLY THE ACTUATOR
SIZE INCREASES.
THERE ARE LIMITATIONS TO THE TORQUE
OUTPUTS AT LOW PRESSURE. SO CAUTION
IS NEEDED WHEN SIZING THESE UNITS.
MOUNTING HARDWARE IS DIFFERENT THAN
TRADITIONAL STYLES, AS THE ACTUATOR
HAS A SPLINED CONNECTION. SPACE CAN
ALSO BE AN ISSUE AS THESE ACTUATORS
TYPICALLY MOUNT PERPINDICULAR TO THE
PIPELINE.

12. SPRING RETURN VS. DOUBLE
ACTING ACTUATORS…
ACTUATOR SIZING ALSO DEPENDS ON
WHETHER A SPRING RETURN OR
DOUBLE ACTING UNIT IS REQUIRED.
WHILE SPRING RETURN UNITS “FAIL”
OPEN OR CLOSED WHEN SUPPLY
PRESSURE IS LOST. THE SPRING
ACTION TAKES OVER, AND TURNS THE
VALVE TO THE DESIRED FAIL POSITION.
DOUBLE ACTING UNITS STOP MOVING
AND “FAIL” IN THE LAST POSTION THAT
THE ACTUATOR WAS IN, AT THE TIME
THE SUPPLY IS LOST.
DOUBLE ACTING UNIT TORQUE
OUTPUTS ARE RELATIVE TO THE
SUPPLY PRESSURE.

13. A SAFETY FACTOR MUST BE USED WHEN
SIZING ACTUATORS. SAFETY FACTOR
MARGINS SHOULD BE CONSIDERED FOR A
VARIETY REASONS:
 UNFORSEEN SPIKES IN PRESSURE.
 LOW TEMPERATURES.
 SOLIDS IN PROCESS.
 LOW CYCLE SEATS.
DYNA-FLO USES A MINIMUM OF 25% SAFETY
FACTOR BY DEFAULT, WHEN SIZING
ACTUATORS. UNLESS OTHERWISE SPECIFED
BY THE CUSTOMER.
SAFETY
FACTORS…

14. ACCESSORIES…
DYNA-FLO STOCKS INDUSTRY STANDARD
BRANDS OF ACCESSORIES & INSTRUMENTATION.
 ARGUS PNEUMATIC PILOTS.
 WESTLOCK LIMIT SWITCHES.
 ASCO SOLENOID VALVES.
 AMOT LATCHING RELAYS.
 PARKER QUICK EXHAUST VALVES.
 DELTROL SPEED CONTROL VALVES.
OUR JOURNEYMAN INSTRUMENT TECHS MOUNT,
TEST, AND CALIBRATE ALL ACCESSORIES BEFORE
THE ASSEMBLY SHIPS TO THE CUSTOMER TO
ENSURE FUNCTION AND ACCURACY.

15. MOUNTING HARDWARE…
AS A CONTROL VALVE
MANUFACTURER, DYNA-FLO
HAS THE EXPERTISE AND
FACILITIES TO ENGINEER AND
FABRICATE ANY MOUNTING
HARDWARE THAT IS REQUIRED.
THIS ALLOWS US TO CONTROL
THE QUALITY, DELIVERY, AND
PRICING.
ALL DIMENSIONS ARE
MACHINED TO TOLERANCE TO
ENSURE A TIGHT FIT &
ELIMINATE HYSTERESIS.
WE ALSO MANUFACTURE
HARDWARE FOR EXISTING
VALVES IN THE FIELD THAT
NEED TO BE RETRO-FITTED
WITH ACTUATION.

16. SUMMARY…
 THERE ARE MANY FACTORS TO CONSIDER WHEN SIZING
ACTUATORS.
 DYNA-FLO ALWAYS USES AT LEAST 25% SAFETY FACTOR
IN SELECTION.
 DYNA-FLO HAS A WIDE RANGE OF STOCKED ACTUATORS
TO SUIT YOUR NEEDS.
 ALL MAJOR BRAND OF ACCESSORIES & INSTRUMENTATION
ARE AVAILABLE.
 DYNA-FLO ENGINEERS & MANUFACTURES IT’S OWN
MOUNTING HARDWARE.
 OUR INSTRUMENT TECHS MOUNT, SET TRAVEL, TEST, AND
CALIBRATE ALL EQUIPMENT PRIOR TO SHIPMENT.

17. www.dynaflo.com