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

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

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

Item	사양
Product Name	Adjustable Angle Choke Valve
밸브 유형	Angle Pattern (Vertical Inlet / Horizontal Outlet)
공칭 크기	4″ (4 1/16″ / 103 mm nominal bore)
압력 등급	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

매개변수	Value / Range	비고
압력 등급	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

요소	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)	비고
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:

Valve Size: 4 1/16″
Pressure Rating: 3000 PSI
End Connection Type: Flanged (API 6A) / Hub / Weld End
Material Class: AA, BB, etc.
Temperature Class: PU (Standard) or others
Specification Level (PSL): 1, 2, or 3
NACE Requirement: Yes / No
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.

보증:

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