API 6A Choke Valve

ID:143

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 ( 51oF/-46oC ~ 250oF/121oC)

• 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