CFC CHOKES

Chokes

Representing (In Line Valve) is dedicated to providing solutions to control flow in the most arduous applications. Focused on the upstream oil and gas industries, In Line Valve provides; Chokes for production and injection, Choke and Control Valves for automated and remote flow control and Manual and automated control valves with multistage trims for use in high pressure gas production and for anti-cavitations service in water injection and dumping.

A) Positive Chokes:

- Pressure ratings; 2000 3000, 5000, 10,000, 15,000 API and ANSI classes up to 4500

- 2", 3", 4", 5", 6" and larger sizes

- Field conversion kits to adjustable needle and seat, and cage type adjustable chokes

- Flanged or Studded Block Body

- Hammer Lug or Bolted Bonnet

- Beans available: St. St. Ceramic lined, Satellite lined, Tungsten Carbide lined & Long

and Short style beans

Nominal Body Size	End Connections	Trim size
2"	API 2 1/16", 2 9/16", 3 1/8" ANSI Flanges 2", 3"	1" (64/64") 1.5" (96/64")
3"	API Flanges 3 1/8", 4 1/16" ANSI Flanges 3", 4"	2" (128/64") 50mm

B) Needle & Seat Adjustable:

- Pressure ratings; 2000 3000, 5000, 10,000, API and ANSI classes up to 4500.

- Bonnet nut with vent hole for safety during servicing.

- Field conversion kits to positive, and cage trim control chokes.

- Dynamic seal (stem packing) uses spring energized lip seals.

- Micrometer indicator barrel calibrated in /64" 'Bean Size'.

- Body/Bonnet materials include, Carbon Steel, Alloy Steel, Stainless Steel and Duplex

Stainless Steel.

- In-Line or Angle body options.

Nominal Body Size	End Connections	Trim size
2"	API 2 1/16", 2 9/16", 3 1/8" ANSI Flanges 2", 3"	1" (64/64") 1.5" (96/64")
3"	API Flanges 3 1/8", 4 1/16" ANSI Flanges 3", 4"	2" (128/64") 50mm

C) Control Chokes:

In-Line Valve Co. Control Chokes utilize a ported cage type trim to provide fine and accurate control of flow.

Control Choke Trim

Experience coupled with testing have shown the use of 4 diametrically opposed ports can provide the highest wear resistance in a 'cage' type flow trim.

The use of 4 small ports in the lower section of the cage provides fine control at low openings while the 4 larger ports provide capacity for higher flows.

4 Port flow geometry provides a balanced flow pattern which when coupled with the enlarged body gallery of these chokes will maximize lifetime and return on investment.

4x4 Control Choke Trim

Flow is directed through ports in the flow cage and accelerates into the centre of the trim where it impinges on flow from the opposite port.

Flow rate is adjusted by the use of a plug moving inside the flow cage 'Plug and Cage' or by use of a sleeve on the outside of the flow cage 'External Sleeve'.

Plug and Cage type trims provide a robust design with maximum flow capacity often used in oil production and injection service.

External sleeve type trims provide an optimized resistance to erosion and are often used for high erosive service and high pressure gas production.

Plug and Cage Trim

Flow is directed through the ports in the trim to impinge on itself in the centre of the flow cage. The internally guided plug controls the opening and rate of flow. The cage is supported at both ends to provide a rigid and robust trim suited to Production and Injection applications.

Large body annulus maximizes Cv and eliminates body erosion Plug and Cage control choke trims provide maximum flow capacity and are used in Production and Injection service.

The plug shuts off flow by making contact on an internal prepared surface at the bottom of the flow cage.

External Sleeve Trim

Flow is directed through the ports in the trim to impinge on itself in the centre of the flow cage. The externally guided flow sleeve controls the opening and rate of flow.

External Sleeve and Cage control choke trims provide maximum wear resistance and are used in high erosion production and high pressure service.
Large body annulus maximizes Cv and eliminates body erosion.

The flow sleeve shuts off flow by making contact on a seat ring outside of the flow cage, by keeping the seat surface away from high velocity flow, the seat integrity is maintained.

Special Trim

Special trims such as this ED “Energy Dissipating” disk stack can be provided as solutions to severe service including anti–cavitations, high pressure drop and low noise service.

D) Multi-Stage:

In Line Valve Provide chokes with Multistage trims for ‘Special’ Applications such as water dumping (Anti-Cavitation) and High Pressure gas production.
Trim options include:
ED Tortuous path disk stack
ZZ Tortuous path cylindrical low Cv anti–cavitations trim
CC Concentric Cage type trim

ED Trim

Model ED choke is designed as a robust control choke with multistage ‘Energy Dissipating’ disk stack trim specifically for applications to avoid cavitations (i.e. water dumping) and for high energy dissipation such as in high pressure gas production and low noise service.

Several mechanisms are utilized in the design to assist with the conversion of potential energy (pressure) into heat without problems of cavitations in liquids caused by low pressure and the problems of high noise levels with gasses caused by high velocities.

Splitting the flow into a large number of small streams reduces the energy levels in each stream.

Large trim surface area maximizes friction against the fluid.

Large number of changes of direction.
Repeated compression and expansion.

The disk stack has a multiple set of tortuous paths in parallel to each other with each pathway being a series of restrictions in series with each other.

Along each pathway there are restrictions and expansion chambers. In liquid applications the expansion chambers cause swirling of the fluid increasing the number of turns – each chamber is equivalent to approximately 3 turns.

The disks are clamped in position by means of the bonnet bolting. This ensures the stack can be easily extracted and separated for cleaning if it should become necessary.

Trim options include Linear Flow Characteristic, Bi-linear and Tri-linear.

	ED trims are custom designed and manufactured to provide application solutions
	Plug and Cage, External Sleeve, Positive and Special ED Labyrinth trims are interchangeable in a standard valve body
	Accurate ‘micrometer’ style position indicator (manual valves)
	Linear non-rotating stem movement optimizes stem packing life
	Blow out proof stem
	Bolted bonnet with metal to metal bonnet seal provides long life and reliable sealing
	Cartridge style trim installation uses no internal threads or special tools - easing field maintenance
	Pressure balancing (in larger sizes/higher pressures) reduces operating torque
	Range of actuators and mounting kits for ease of automation
	Body materials from Carbon Steel, Stainless Steels, Duplex Stainless Steels and Corrosion Resistant Alloys
	Pressure ratings include API 5000, 10,000 and ANSI pressure classes up to and including 2500# and 4500#
	In-Line (Globe) type body available
	ED chokes available in ‘Over Plug’ flow direction or ‘Under Plug’ for clean gas

Z Z Trim

For low Cv applications the flow path can also be incorporated into the wall of a cylindrical flow cage in a Z pattern - ZZ type trim

CC Concentric Cage Trim

For lower pressure drop ratio applications, concentric cage designs can also be provided

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