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Cyclonc Vale SFDAL Series Choke Valve Cutaway
Cyclonic has been setting the standard for precise and repeatable control of gases and liquids.
The SFDAL Series is a Side-Entry Flanged Choke Valve. Like all Cyclonic valves, the SFDAL Series is built with the Cyclonic Design Difference. When you need to control a wide range of pressures and flow rates of gases or liquids, Cyclonic’s superior design gives you accurate control and a long safe valve life.

Exclusive Side-Entry Design:
The valve design allows for a simple, one-man changeout of the tungsten carbide discs to reconfigure the valve for changed flow conditions.  Easily complete in-line inspection and maintenance critical for increasing safety and protecting the environment - all without taking the valve out of line, or removing the actuator.

SFDAL Series


Pressure Ratings
Up to 5,000 psi MOP
Standard: API 4130 (75K) and 316SS or customer-specified
ANSI Class
ANSI B16.34 and/or API 6A wall thickness and bolt loading
Manual, electric, hydraulic or pneumatic
1" to 6"
Open/close or modulating
Production choke, high pressure injection control (CO2, water and steam), bypass valves, blow-off valves, bleed-down valves, OEM downhole testing, OEM horizontal pump testing, compressor suction


  • Machined from solid bar stock; no porosity, limitless possible lengths
  • Xylan™ coated 17-4 stainless steel stem and disc driver
  • Automated valves have selectable failure position
  • EDS(TM) Erosion Deteticion System can provide early warning of significant valve erosion and help prevent fluids or gas leaks
  • Easy to maintain
Since 1991, Cyclonic has been setting the standards for precise and repeatable control of gases and liquids.
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