Description

TECHNICAL DATA SHEET

API 6A Plug Valve (Halliburton Style)

Project: _______________________
Tag No.: _______________________
PO No.: _______________________

1. General Information

Item	Specification
Valve Type	Plug Valve, Cylindrical Plug, Low-Torque Design, Bottom Entry / Top Entry
Size Range	1″ – 4″ (DN25 – DN100) [Specify size: _____]
Pressure Rating	2,000 psi – 15,000 psi (Up to 20,000 psi test)
End Connection	Hammer Union (FIG 1502 / 1002 / 2002), Threaded (LP/TBG), Flanged (API 6A)
Design Standard	API Spec 6A / NACE MR0175 / ISO 10423
Product Specification Level	PSL1 – PSL3 (PSL2 typical)
Performance Requirement	PR1 – PR2
Material Class	AA – FF (DD/EE typical for sour service)
Temperature Class	K (-60°C) to U (121°C); KU typical (-29°C to 121°C)
Service	Cementing, Fracturing, Acidizing, Well Service Flowlines, Manifold Trailers, Coil Tubing
Operation	90° Quarter-Turn, Low Torque

2. Bill of Materials (Materials of Construction)

Part Name	Qty.	Material	Material Specification / Notes
Body	1	Alloy Steel	AISI 4130 / 4140, Forged, Heat Treated
Plug / Cylindrical Core	1	Stainless Steel	316/316L SS (Standard); Monel / 17-4PH for sour service
Inserts / Segments (Pair)	2	Ductile Iron / Aluminum Bronze	Tapered OD, Split design; Aluminum Bronze for sour/corrosive service
O-Ring Seals (Inserts)	2	Nitrile / Fluoroelastomer / PTFE	90-durometer; Recessed in insert grooves
Stem Seals / Packing	Set	Nitrile / Fluoroelastomer / PTFE+Inconel Spring	Bonded to brass washers; Self-energized designs available
Adjusting Nut	1	Alloy Steel	With O-ring seal
End Connections	2	Alloy Steel	Hammer Union (FIG 1502, etc.), Threaded, or Flanged
Grease Fitting	1	Steel	Giant Buttonhead Type
Handle / Wrench	1	Steel	With operating bar sockets
Gear Operator	1	Steel	For 3″ and larger valves (optional)
Name Plate	1	Stainless Steel	Per API 6A / MSS SP-25

3. Halliburton Lo-Torc® Design Features

Feature	Description	Benefit
Cylindrical Plug Design	Cylindrical (non-tapered) plug eliminates wedging action	Prevents jamming under pressure; reduces operating torque
Pressure-Balanced Plug	Identical stem seals at both ends	Eliminates need for thrust bearings; low torque even at 15,000 psi
Split Inserts Design	Inserts are parted into identical halves, tapered OD to match body cavity; ID precision ground to plug diameter	Firm uniform clamping; easy adjustment; no lapping required
Floating Plug & Inserts	Assembly “floats” downstream under pressure	Compensates for body deflection; seal improves with pressure
Reduced Bearing Area	Raised boss on inserts is only contact area	Minimizes frictional forces; reduces operating torque
In-Line Maintenance	All parts replaceable with valve body left in line	Minimal downtime; no special tools required
Lubrication System	Grease fitting with lubrication chambers above/below plug	Dual function: lubricates and enhances sealing
Metal-to-Metal + Elastomer Sealing	Precision cylindrical fit + O-ring seals	Reliable leak-proof operation under extreme conditions

4. Material Specifications & Rationale

Component	Material	Rationale
Body	AISI 4130 Alloy Steel (Forged)	Heat treated for high strength and durability in high-pressure service (up to 15,000 psi)
Plug	Stainless Steel (316/316L)	Standard on every Lo-Torc valve; heat treated to resist galling and corrosion
	Monel / 316L SS (Sour Service)	For H₂S environments per NACE MR0175
Inserts	Ductile Iron / Cast Iron	Standard for general fluid service (metal-to-metal sealing)
	Aluminum Bronze	For sour/corrosive service
Seals	Nitrile (90-durometer)	Standard service up to 121°C (250°F)
	Fluoroelastomer / PTFE	For corrosive fluids / temperature extremes
	PTFE + Inconel Spring	For highly corrosive media / extreme temperatures

5. Dimensional Data (Reference – Hammer Union Ends)

*Note: Based on Halliburton Lo-Torc specifications for 1502 Union connections . Dimensions are for reference only; verify with manufacturer drawing.*

Size	End Connection	Working Pressure (psi)	Test Pressure (psi)	Face-to-Face L (mm/in)	Height H (mm/in)	Weight (kg/lbs)
1″ × 2″	FIG 1502 M×F	15,000	22,500	268 mm / 10.57″	185 mm / 6.59″	~18 kg / 40 lbs
2″ × 2″	FIG 1502 M×F	15,000	22,500	353 mm / 15.25″	225 mm / 8.05″	~35 kg / 77 lbs
3″ × 3″	FIG 1502 M×F	15,000	22,500	432 mm / 15.69″	254 mm / 14.27″	~68 kg / 150 lbs

Flanged End Dimensions (API 6A Flanges):

Size	Pressure	Face-to-Face L (mm)	Height H (mm)	Notes
2-1/16″	5,000 psi	343 mm	390 mm	With gear operator
3-1/16″	5,000 psi	435 mm	578 mm	With gear operator
4-1/16″	5,000 psi	540 mm	711 mm	With gear operator

Threaded End Dimensions (Female LP/TBG Threads):

Available in 1″, 2″, 3″ sizes
Face-to-face lengths vary by thread type and size

6. Operating Torque Requirements

Valve Size	Pressure	Operating Torque (Nm/ft-lbs)	Operator Type
1″	15,000 psi	40-60 Nm / 30-45 ft-lbs	Handle / Wrench
2″	15,000 psi	135-200 Nm / 100-150 ft-lbs	Handle / Wrench
3″	15,000 psi	340-475 Nm / 250-350 ft-lbs	Gear Operator
4″	5,000 psi	475-610 Nm / 350-450 ft-lbs	Gear Operator

*Note: Even under 15,000 psi pressure, the Lo-Torc design enables easy operation due to pressure-balanced cylindrical plug .*

7. Performance & Testing (Per API 6A / API 598)

Test Type	Medium	Pressure	Acceptance Criteria
Shell (Body) Test	Water	1.5 x Rated Pressure	No visible leakage through body
High Pressure Seat Test	Water	1.5 x Rated Pressure	Per API 6A requirements
Low Pressure Seat Test	Air / Nitrogen	0.6 MPa (87 psi)	Bubble-tight
Hydrostatic Test	Water	Per API 6A	Duration: Minimum 3 minutes
Gas Test (Optional)	Nitrogen	Per customer spec	For critical service applications

8. Sour Service Configuration (NACE MR0175)

For H₂S / Sour Gas Environments :

Component	Sour Service Material
Plug	Monel K500 / 316L Stainless Steel
Inserts	Aluminum Bronze
Seals	Fluoroelastomer (FKM) / PTFE
Body	AISI 4130 with controlled hardness (HRC ≤ 22)
Bolting	ASTM A193 B7M / A194 2HM

Temperature Rating for Sour Service:

Standard: -29°C to 121°C (Class KU)
Low Temperature: -46°C to 121°C (Class PL) available

9. Actuation Options

Operator Type	Availability	Application
Manual Handle / Wrench	1″ – 2″ valves (standard)	Standard operation; operating bar sockets for leverage
Gear Operator	3″ and larger (standard); Optional for smaller sizes	Required for larger valves; reduces operating effort
Pneumatic Actuator	All sizes (optional)	Remote operation; fast response
Hydraulic Actuator	All sizes (optional)	High thrust; ideal for automated manifolds
Electric Actuator	All sizes (optional)	Remote control; precise positioning

10. Flow Characteristics

Valve Size	Port Diameter (mm/in)	Flow Coefficient Cv (approx)
1″	25 mm / 1.0″	25-35
1-1/2″	38 mm / 1.5″	60-80
2″	51 mm / 2.0″	120-150
3″	76 mm / 3.0″	280-350

Flow Direction: Bidirectional
Flow Characteristic: Quick Opening (90° rotation)
Pressure Drop: Minimal when fully open (full bore design)

11. Application Guidelines

Suitable Applications

Application	Description
Cementing Operations	High-pressure cement flow control during wellbore stabilization
Fracturing Flowlines	Control of fracturing fluids under extreme pressure
Well Testing Flowlines	Isolation and flow control during well testing
Acidizing	Corrosive acid treatment operations
Coil Tubing	Coiled tubing pressure control
Manifold Trailers	High-pressure manifold systems
Sand Control	Abrasive fluid handling (with aluminum bronze inserts)

Not Suitable For

Continuous throttling/choking service (use all-metal inserts if required)
Vacuum service without special configuration
Temperatures exceeding seal material limits

12. Maintenance & Repair Features

Feature	Description
In-Line Maintenance	All repairs performed with valve body left in line
Parts Replacement	Every part replaceable with standard parts; no factory return required
Disassembly	Remove only two capscrews, adjusting nut, and handle adapter
Interchangeability	100% interchangeable with Halliburton brand parts
Repair Kits	Available for all sizes and service types

13. Marking & Documentation

Valve Marking (Per API 6A / MSS SP-25)

Manufacturer’s Name/Logo
API Monogram (if applicable)
Size
Pressure Rating
Material Class (e.g., DD, EE)
Temperature Class (e.g., KU)
PSL Level
Heat Number
Date of Manufacture
Flow Direction (if applicable)

Standard Documentation

Material Test Certificates (EN 10204 3.1)
Pressure Test Report (Hydrostatic)
NACE MR0175 Compliance Certificate (if applicable)
Certified Dimensional Drawing
API 6A Certificate of Compliance
Operation & Maintenance Manual

Optional Documentation

PMI Test Report (100% Positive Material Identification)
NDT Reports (UT, MT, PT)
Charpy Impact Test Report (for low temp service)
3.2 Certification (witnessed by third party)

14. Procurement Checklist

Please confirm the following items when ordering:

Item	Selection / Specification
Valve Size	[ ] 1″ [ ] 1-1/2″ [ ] 2″ [ ] 3″ [ ] 4″ [ ] Other: _____
Pressure Rating	[ ] 2,000 [ ] 3,000 [ ] 5,000 [ ] 10,000 [ ] 15,000 [ ] 20,000 psi
End Connection	[ ] FIG 1502 Union [ ] FIG 1002 Union [ ] FIG 2002 Union [ ] API Flange [ ] Threaded (LP/TBG) [ ] Custom: _____
End Configuration	[ ] M × F [ ] F × F [ ] M × M
Material Class	[ ] DD [ ] EE [ ] FF [ ] Other: _____
Temperature Class	[ ] KU (-29°C to 121°C) [ ] PL (-46°C) [ ] Other: _____
PSL Level	[ ] PSL1 [ ] PSL2 [ ] PSL3
PR Level	[ ] PR1 [ ] PR2
Sour Service (NACE)	[ ] Yes [ ] No
Operator Type	[ ] Manual Handle [ ] Gear Operator [ ] Pneumatic [ ] Hydraulic [ ] Electric
Service Medium	_____
Special Cleaning	[ ] Standard [ ] Oxygen Service [ ] No
Certification	[ ] Standard [ ] 3.1 [ ] 3.2 (Witnessed)

15. Notes

Halliburton Lo-Torc® Compatibility: This valve is designed to be 100% interchangeable with Halliburton Lo-Torc® plug valves and spare parts .
Cylindrical Plug Advantage: Unlike tapered plug designs, the cylindrical plug eliminates wedging and pressure locking, ensuring low torque even at maximum rated pressure .
Insert Selection:
- Metal-to-metal inserts (ductile iron) for general service
- Aluminum bronze inserts for corrosive/sour service
Seal Selection:
- Nitrile: Standard service up to 121°C
- Fluoroelastomer: Corrosive fluids / moderate temperature
- PTFE+Inconel Spring: Highly corrosive / extreme temperature
Planned Maintenance: A planned program of insert replacement at specific intervals prevents body erosion. Do not wait for leakage to occur .

*This technical data sheet complies with API Spec 6A, NACE MR0175, and Halliburton Lo-Torc® specifications for high-pressure plug valves .*

Manufacturer: _______________________
Date: _______________________
Prepared by: _______________________

API 10000# Plug Valve