Angle Choke Valves — API 6A 10000psi

Description

Technical Data Sheet

API 6A Angle Choke Valve — 10,000 psi

Valve Type: Angle Pattern Adjustable / Positive (Fixed) Choke Valve
Model Example: ACV-2116-10K-RTJ-6A
Nominal Size: 2-1/16″ (representative size; available from 1-13/16″ to 4-1/16″)
Pressure Rating: 10,000 psi (69.0 MPa)
Operation: Manual Handwheel (standard); hydraulic, pneumatic, or electric actuation available upon request

1. Design Standards & Compliance

Item Standard / Requirement
Design & Manufacturing API Specification 6A / ISO 10423, 21st Edition
Product Specification Level (PSL) PSL 1, 2, 3, 3G, 4 (as specified)
Performance Requirement (PR) PR 1, PR 2
Material Class AA, BB, CC, DD, EE, FF, HH (per API 6A / NACE MR0175)
Temperature Class L, N, P, R, S, T, U, V (−50 °F to +350 °F / −46 °C to +177 °C)
End Connections API 6A Type 6B Flanges with Ring Joint (RTJ)
NACE Compliance NACE MR0175 / ISO 15156 (Sour Service), as applicable
2. Valve Configuration

Parameter Specification
Valve Type Adjustable Choke Valve: Flow area is varied by advancing/retracting the stem to adjust the choke bean opening, enabling flow/pressure control.
Positive (Fixed) Choke Valve: Flow is regulated by installing a fixed-orifice choke bean.
Body Pattern Angle Pattern (90° flow path); globe style design also available
Nominal Bore 1-13/16″ to 4-1/16″ (46 mm to 103 mm)
Working Pressure 10,000 psi (69.0 MPa); available range 2,000 psi to 20,000 psi
Trim Type Needle & Seat / Plug & Seat; with tungsten carbide hardfacing or solid tungsten carbide construction
Orifice Sizes Φ3 mm to Φ12 mm (fixed bean); adjustable per stem stroke
Body Design Forged angle bolted one-piece body
Bonnet Type Bolted Bonnet
Flow Direction Flow tends to close (Flow under seat); recommended for choke service
Leakage Class API 6A PR2 (zero detectable leakage); ANSI FCI 70-2 Class IV (standard) / Class V (optional)
Applicable Media Crude oil, natural gas, drilling mud, fracturing fluids, water injection, CO₂, H₂S, etc.
Working Temperature −46 °C to +200 °C (depending on material class and seal selection)
Fire-Safe Design API 6FA / API 607 (upon request)
Fugitive Emission ISO 15848 (upon request)
3. Materials of Construction

Component Material Class AA/BB (General Service) Material Class DD/EE/FF (Sour Service) Special / Corrosion-Resistant
Body AISI 4130 / AISI 4140 (Low Alloy Steel) 316 SS / F51 Duplex / Inconel 718 Carbon Steel, Duplex SS, Nickel Alloy
Bonnet AISI 4130 / AISI 4140 (Low Alloy Steel) 316 SS / F51 Duplex / Inconel 718 Same as above
Stem / Needle 17-4 PH / Inconel 718 + Hardfacing Inconel 625 / 718 + Hardfacing Super Duplex / Inconel 718
Seat Integral / Inconel Clad + Stellite Inconel Clad + Stellite / Tungsten Carbide Tungsten Carbide
Plug / Disc Tip 17-4 PH / Inconel 718 + Stellite / Tungsten Carbide Tungsten Carbide (Solid) / Stellite Tungsten Carbide (Insert/Clad/Solid)
Cage (if applicable) — Duplex / Inconel 625 / Solid Tungsten Carbide Solid Tungsten Carbide
Stem Packing PTFE V-Ring / Graphite / Chevron Packing PTFE + Graphite / High-pressure seals Low-emission packing (ISO 15848)
Body Gasket Metal Seal / Viton / PTFE Metal-to-Metal / Graphite-filled spiral wound —
Studs & Nuts ASTM A193 B7 / A194 2H ASTM A193 B7M / A194 2HM (Sour) / Stainless Steel B8M / 8M
External Coating Epoxy Paint (standard) Special coatings upon request —
Note: For highly erosive services, Solid Tungsten Carbide Trim is recommended, including body, bonnet, stem, seat, cage, and sleeve for maximum erosion resistance.
4. Dimensions & Weights — 10,000 psi, RTJ Flanged End

Nominal Size Max Orifice Face-to-Face A (mm) Center to Top B (mm) Ring No. Approx. Weight (kg)
1-13/16″ — — — — —
2-1/16″ 1″ 224 195 BX 152 55
2-9/16″ 1″ 237 208 BX 153 70
2-9/16″ 2″ 298 264 BX 153 85
3-1/16″ 2″ 298 264 BX 154 110
4-1/16″ 3″ 350 289 BX 155 180
*Dimensions per API 6A standard flanged-end angle choke valves, 10,000 psi working pressure. Weights are approximate.*
5. Actuator Mounting (Upon Request)

Mounting Pad: ISO 5211 standard flange integrated on valve top
Stem Top: Machined with keyway or square per actuator coupling requirements
Actuator Types:

Hydraulic Actuator: Linear hydraulic, for high-thrust precision control
Pneumatic Actuator: Linear pneumatic, with positioner for modulating control
Electric Actuator: Multi-turn / Linear modulating actuator with 4-20 mA control signal (input/output), manual override handwheel
Stepper Actuator: For highest level of positioning accuracy
Manual Override: Handwheel or hydraulic override
Accessories: Limit switches, solenoid valves, positioners, local display available as a package
6. Testing & Inspection

Test Item Test Medium Test Pressure Standard
Shell Hydrostatic Test Water 1.5 × Rated Working Pressure (15,000 psi / 103.5 MPa) API 6A
Seat Hydrostatic Test Water 1.1 × Rated Working Pressure (11,000 psi / 75.9 MPa) API 6A
Seat Pneumatic Test (Optional) Air / Nitrogen Per PSL requirements API 6A
Fire Test (Optional) — Per API 6FA / API 607 API 6FA / API 607
Visual & Dimensional — — MSS SP-55, API 6A
Drift Test — — API 6A
Hold Duration: Minimum 15 minutes per test; PSL 3G and PSL 4 include enhanced requirements.

Documentation:

Material traceability and test reports available per EN 10204 3.1 or 3.2
API 6A Monogram certification available
7. Design Features

Angle Body Pattern: 90° flow path design effectively reduces erosion; optimized flow geometry minimizes fluid velocity impact on body and trim.
Adjustable Choke Design: Stem-driven needle/plug adjustment varies the choke bean opening area for precise production control and pressure regulation.
Interchangeable Fixed Bean: Fixed choke body can be interchanged with adjustable choke body, facilitating field maintenance and functional conversion.
Replaceable Carbide Trim: Choke bean manufactured from tungsten carbide or Stellite, providing excellent wear and erosion resistance for extended service life.
Multi-Stage Anti-Cavitation Trim: Multi-stage cage or labyrinth flow passage design splits the fluid into multiple small streams, reducing pressure and velocity in stages to effectively avoid cavitation, flashing, and erosion.
Balanced or Unbalanced Plug: Optional balanced plug design minimizes actuator thrust requirements to the maximum extent.
Blowout-Proof Stem: Stem with integral collar prevents ejection under line pressure, ensuring operator safety.
Top-Entry Maintenance: Internal components can be quickly replaced without removing the valve body or actuator, reducing maintenance costs.
Metal-to-Metal Sealing: Bonnet-to-body metal-to-metal seal ensures absolute pressure containment.
NACE Compliant (Sour Service): Materials compliant with NACE MR0175 / ISO 15156 are available upon request for sour service conditions.
8. Ordering Information

When ordering, please specify:

Valve Type: Adjustable Choke or Positive (Fixed) Choke
Nominal Size (e.g., 2-1/16″) and Pressure Rating (10,000 psi)
Orifice Size (for fixed choke: Φ3 ~ Φ12 mm; for adjustable: trim type)
Material Class (AA / BB / CC / DD / EE / FF / HH) per service conditions
Product Specification Level (PSL): PSL 1, 2, 3, 3G, or 4
Performance Requirement (PR): PR 1 or PR 2
Temperature Class (K, L, N, P, R, S, T, U, V)
End Connection: API 6A Type 6B Flanged RTJ
NACE MR0175 Compliance: Required (Yes/No)
Trim Type: Standard (Stellite/Tungsten Carbide Hardfacing) or Full Tungsten Carbide
Flow Characteristic: Equal Percentage (standard) / Linear / Quick Opening
Operation: Manual (handwheel), Hydraulic, Pneumatic, Electric, or Stepper Actuator — specify actuator brand, power supply/air pressure, control signal
Fire-Safe Certification: Required (Yes/No)
Fugitive Emission Certification: Required (Yes/No)
Documentation Level: EN 10204 3.1 / 3.2 certificates, PMI, NDE (MPI/LPI/RT), Charpy Impact Test Results