API 6A Choke Valve Wellhead- Low-alloy Steel Choke Valve

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API 6A Choke Valve Wellhead

API 6A Choke Valve


The choke valve is the major component of the Christmas tree and Manifold, mainly used for controlling the production rate of an oil well at a working pressure of up to 20,000 psi. The choke valve can be classified as adjustable choke valve and positive choke valve. The adjustable choke valve is designed to adjust the effective area available, for the flow to control the production rate, through rotating the hand wheel. The positive choke valve is designed to control the production rate through changing flow beans.

 

These choke valves are available in different configurations as below:

• Positive bean configuration

• Needle and Seat configuration

• Cage type configuration

 

Specifications

• Nominal diameter: 2.1/16” ~ 4.1/16”

• Working pressure: 2000 PSI ~ 20000 PSI

• Working media: oil, natural gas, mud

• Working temperature: LU ( 51℉/-46℃ ~ 250℉/121℃)

• Material grades: AA, BB, CC, DD, EE, FF, HH

• Specification level: PLS1 ~ PSL4

• Performance level: PR1 ~ PR2


Features 

• Long life and low maintenance

• Body to bonnet contact behind the O-ring seal eliminates bonnet seal extrusion

• A locking device is set on stem

• Ideal for many flow regulating services and easily converted to a positive choke

• The stem of adjustable choke is made of high strength alloy steel. The material has the feature of abrasion resistance, erosion resistance and reliable serviceability

• The valve and seat can be removed by hand, without special tools and without removal of the valve body from the line, by simply removing the bonnet

• Drive has manual, hydraulic and gear transmission forms

• Connections have flange, thread and hub

 

Flanged End Dimensions (mm)

Size Working Pressure (psi) A B Ring No.
1” Maximum Orifice
2.1/16” 2000 165 150 R 23
2.9/16” 2000 170 160 R 26
2.1/16” 5000 203 175 R 24
2.9/16” 5000 210 175 R 27
2.1/16” 10000 224 195 BX 152
2.9/16” 10000 237 208 BX 153
2.1/16” 15000 262 225 BX 152
2.9/16” 15000 298 267 BX 153
2” Maximum Orifice
3.1/8” 2000 230 185 R 31
2.9/16” 5000 265 195 R 27
2.9/16” 10000 298 264 BX 153
2.9/16” 15000 298 264 BX 153
3.1/8” 3000 298 225 R 31
3.1/8” 5000 298 225 R 35
3.1/16” 10000 298 264 BX 154
3.1/16” 15000 298 264 BX 154
4.1/16” 3000 298 264 R 37
4.1/16” 5000 298 264 R 39
4.1/16” 10000 350 289 BX 155
3” Maximum Orifice
4.1/16” 3000 298 264 R 37
4.1/16” 5000 298 264 R 39
Low-alloy Steel Choke Valve

Low-alloy Steel Choke Valve

Yulin Choke valve consists of needle-type adjustable flow valve (JFK), Choke-type Choke valve (JFB), cage-type Choke valve (JFL) and positive Choke valve (JFG) Composition, Design and quality control comply with international standards. The valve body is made of high-quality low-alloy steel and processed with advanced technology that meets API 6A 20th edition and NACE MR-0175.

API 6A Choke Valve Wellhead

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