MANUAL CHOKE VALVE
The choke valve, a main Description of Christmas tree, is design to control production rate of the oil well, with working pressure up to 10000psi. Choke valves can be classified as follows: Adjustable choke valves and positive choke valves. By rotating hand wheel to drive the stem, the adjustable choke valve is designed to adjust the effective area available for the flow to accomplish control of production rate. The positive choke valve is design to accomplish control of production rate by changing flow beans.
Features:
1. The coupling nut used for connecting the bonnet and body allows fast make-up and break-out.
2. Stem tip and bean adaptor are fabricated from special carbide alloys for corrosion and abrasion resistance.
3. Indicator lens with scale marks allows the operator to know stem's position and actual orifice area.
4. Turn hand wheel counter-clockwise and the valve will open; Turn hand wheel clockwise and the valve will close.
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Material requirements |
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Service Conditions |
Trim |
Body and Bonnet Materials |
Stem Materials |
Gate Materials |
Seat Materials |
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API 6A Classification |
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General Service |
AA |
Alloy Steel |
Alloy Steel |
Alloy Steel / Hard Facing |
Alloy Steel / Hard Facing |
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General Service |
BB |
Alloy Steel |
AISI 410 |
AISI 410 / Hard Facing |
AISI 410 / Hard Facing |
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General Service |
CC |
Stainless Steel 13% Cr. |
AISI 410 |
AISI 410 / Hard Facing |
AISI 410 / Hard Facing |
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Sour Service |
DD |
Alloy Steel |
Alloy Steel |
Alloy Steel / Hard Facing |
Alloy Steel / Hard Facing |
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Sour Service |
EE |
Alloy Steel |
AISI 410 |
AISI 410 / Hard Facing |
AISI 410 / Hard Facing |
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Sour Service |
FF |
Stainless Steel 13% Cr. |
AISI 410 |
AISI 410 / Hard Facing |
AISI 410 / Hard Facing |
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Sour Service |
HH |
Alloy Steel clad * |
Inconel 718 |
Inconel 718 / Hard Facing |
Inconel 718 / Hard Facing |
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Temperature ratings |
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Temperature Classification |
Operating Range |
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°F from min. up to Max. |
°C from min. up to Max. |
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min. |
Max. |
min. |
Max. |
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K |
-75 |
180 |
-60 |
82 |
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L |
-50 |
180 |
-46 |
82 |
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P |
-20 |
180 |
-29 |
82 |
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R |
Room temperature |
Room temperature |
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S |
0 |
150 |
-18 |
66 |
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T |
0 |
180 |
-18 |
82 |
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U |
0 |
250 |
-18 |
121 |
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V |
35 |
250 |
2 |
121 |
HONGON Machinery & Technology Co., Ltd is a Shanghai based Multi-faced petroleum equipment parts machining solutions provider. A global supplier consisting of supply chain employing the latest technology in precision machining, process controls, quality system and supply chain management. As a smart manufacturer, our mission is to be a reliable supplier, provide flexible, precision machining service in highest quality with competitive price for our client.
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