4-1/16"-3000PSI Adjustable Angle Choke Valve
4-1/16"-3000PSI Adjustable Angle Choke Valve - Image 2
4-1/16"-3000PSI Adjustable Angle Choke Valve - Image 3
4-1/16"-3000PSI Adjustable Angle Choke Valve - Image 4

4-1/16″-3000PSI Adjustable Angle Choke Valve

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Description

Technical Data Sheet: 4-1/16″-3000PSI Adjustable Angle Choke Valve

Item Specification
Product Name Adjustable Angle Choke Valve
Valve Type Angle Pattern (Vertical Inlet / Horizontal Outlet)
Nominal Size 4″ (4 1/16″ / 103 mm nominal bore)
Pressure Rating 3000 PSI (21 MPa)
End Connections Flanged (API 6A), Optional: Hub or Welded
Design Standard API Spec 6A / API Spec 16C

General Description

The Adjustable Angle Choke Valve is a critical component used in oil and gas wellhead assemblies (Christmas trees) and kill/choke manifolds. Its primary function is to regulate and control the flow rate and pressure of produced fluids (oil, gas, and water) from the well . By manually turning the handwheel, the stem advances or retracts a tapered needle or plug relative to a seat, precisely varying the flow area. This model features a robust angle body design (90°) which inherently provides erosion resistance by directing flow away from the sealing surfaces .

Technical Parameters

Parameter Value / Range Remarks
Pressure Rating 3000 PSI (21 MPa) Working pressure per API 6A
Nominal Bore Size 4 1/16″ (103 mm) Corresponds to 4″ nominal size
Temperature Class PU / L-U Standard: -29°C to 121°C (-20°F to 250°F)
Material Class AA Standard for general service (Other classes like BB, CC, DD, EE, FF available on request)
Specification Level (PSL) PSL 1 PSL 2 and 3 available for higher requirements
Performance Level (PR) PR 1 PR 2 available for critical service
Suitable Media Petroleum, Natural Gas, Drilling Mud, Water Fluids containing sand or solids are acceptable due to hardened trim
Flow Direction Under the seat (angle pattern) Standard: Inlet vertical, outlet horizontal
Adjustment Type Manual (Handwheel) Rising stem with visual position indicator
Stem Operation Rotating / Rising Handwheel turns clockwise to close (decrease flow)

Materials of Construction

Component Standard Material Remarks / Alternative
Valve Body WCB (Carbon Steel) / A105 Meets NACE MR0175 for sour service upon request
Bonnet / Cover WCB (Carbon Steel) / A105
Stem / Needle Hardened Stainless Steel 2Cr13, 17-4PH, Inconel 718 for high strength
Choke Seat / Nozzle Tungsten Carbide / Stellite Interchangeable for fixed orifice applications; provides extreme erosion resistance
Stem Tip / Plug Tungsten Carbide / Stellite Ensures long life under high-velocity flow
Packing / Seals PTFE / Flexible Graphite High temperature and chemical resistance
Gasket (Body/Bonnet) Ring Type Joint (RTJ) Material: Soft Iron or Stainless Steel (depending on class)
Handwheel Carbon Steel Position indicator window included

Dimensional Data (Approximate)

Note: Dimensions may vary by manufacturer. For exact installation dimensions, please consult the specific manufacturer’s GA drawing.

Dimension Value (mm) Value (inches) Remarks
Valve Size (Nominal) 103 mm 4 1/16″
End-to-End (Face-to-Face) 298 mm 11.73″ For 4 1/16″-3000PSI Angle Valve
Center to Top (Height) 264 mm 10.39″ From centerline of outlet to top of bonnet
Flange Diameter 292 mm 11.5″ Approx. for API 6A 3000PSI Flange
Bolt Circle Diameter 244.5 mm 9.62″ Approx. for API 6A 3000PSI Flange
Hub / Ring Gasket R37 Ring groove for 4 1/16″-3000PSI
Approx. Weight 180 – 230 kg 400 – 500 lbs Depends on trim and manufacturer

Applicable Standards & Specifications

  • Design & Manufacture: API Spec 6A (Specification for Wellhead and Christmas Tree Equipment)

  • Additional Design: API Spec 16C (Choke and Kill Systems)

  • Flange Connections: API 6A (6B / 6BX Flanges)

  • Testing: API 6A / API 16C (Hydrostatic and Gas testing)

  • NACE Compliance: NACE MR0175 / ISO 15156 (for H₂S service – optional)

Key Features & Applications

Key Features:

  • Precise Flow Control: Allows fine-tuning of flow rates and pressures through a linear or equal percentage characteristic.

  • Erosion Resistance: The hardened trim (Tungsten Carbide/Stellite) withstands the destructive forces of high-velocity, solids-laden fluids .

  • Angle Pattern Design: The 90-degree body design helps protect the stem and sealing area from direct impingement of flow media, extending valve life .

  • Visual Indication: A protected position indicator on the bonnet shows the exact opening percentage of the valve .

  • Interchangeable Trim (Optional): Some models allow conversion between adjustable and fixed choke modes by changing the internal nozzle.

Main Applications:

  • Wellhead Christmas Trees: Regulating production from oil and gas wells .

  • Kill and Choke Manifolds: Controlling well pressure during drilling and workover operations .

  • Flow Lines: As a primary control valve for flow rate and pressure reduction.

  • Test Separators: Controlling flow into testing equipment.

Ordering Information

When ordering, please specify:

  1. Valve Size: 4 1/16″

  2. Pressure Rating: 3000 PSI

  3. End Connection Type: Flanged (API 6A) / Hub / Weld End

  4. Material Class: AA, BB, etc.

  5. Temperature Class: PU (Standard) or others

  6. Specification Level (PSL): 1, 2, or 3

  7. NACE Requirement: Yes / No

  8. Special Trim: If required (e.g., Full Tungsten Carbide)

Notes:

  • This datasheet is a general guide based on API specifications and common industry practices.

  • Always refer to the manufacturer’s certified dimensional drawing for installation.

  • Pressure and temperature ratings are maximum allowable and should not be exceeded.

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