Aluminum Instrument Piping Adapters and Couplings

Table of Contents

Section	Title	Page
	Purpose	2
	Scope	2
	Related Documents	2
	Units of Measure	2
	General	3
	Materials	3
	Dimensions, Tolerances, and End Preparation	3
	Inspection, Examination, and Testing	3
	Marking	3
	Cleaning and Packing	3
	Documentation	4
	Definitions of Abbreviations and Symbols	4
	Change Log	14
	Detail D001 Concentric Reducer DN8 (NPS 1/4) SW X DN15 (NPS 1/2) SW	5
	Detail D002 Concentric Reducer DN8 (NPS 1/4) SW X DN20 (NPS 3/4) SW	6
	Detail D003 Tee DN8 (NPS 1/4) SW	7
	Detail D004 Coupling DN8 (NPS 1/4) SW X DN8 (NPS 1/4) SW	8
	Detail D005 Coupling DN8 (NPS 1/4) SW X DN8 (NPS 1/4) SW (Plugged)	9
	Detail D006 Adapter DN8 (NPS 1/4) SW X DN15 (NPS 1/2) PE	10
	Detail D007 Coupling DN8 (NPS 1/4) SW X DN15 (NPS 1/2) Female NPT	11
	Detail D008 Cap DN8 (NPS 1/4) SW	12
	Material Specification for Aluminum Bar or Plate (5083 or 5086)	13
	Chinese Material Specification for Aluminum Bar or Plate (5083)	14

1. PURPOSE

1.1 This engineering specification defines the minimum requirements for aluminum instrument pipe couplings and adapters.

2. scope

2.1 This specification applies to materials and dimensions of aluminum couplings and adapters for DN8 (NPS 1/4) instrument piping used in cold box design.

3. related documents

3.1 Air Products Engineering Documents 4WPI-M00001 General Piping Material Purchase Specification 4WPI-SW70003 Oxygen Clean (Class AA) Inspection and Acceptance Requirements

3.2 American Society for Testing and Materials (ASTM) B 209 Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate B 221 Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Shapes, and Tubes B 361 Standard Specification for Factory-Made Wrought Aluminum and Aluminum-Alloy Welding Fittings

3.3 The American Society of Mechanical Engineers (ASME) B1.20.1 Pipe Threads, General Purpose (Inch) B16.11 Forged Fittings, Socket-Welding and Threaded SB-209 Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate SB-221 Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Shapes, and Tubes

3.4 European Committee for Standardization (CEN) EN 10204 Metallic Products – Types of Inspection Documents

Note: A European Standard is adopted as a national standard in each country of the European Union, and as such is published preceded by their standards institution’s identification letters (for example, BS, DIN).

3.5 Chinese Code GB/T 3190 Wrought aluminium and aluminium alloys–Chemical composition limits GB/T 3191 Extrusion Rods and Bars of Aluminum and Aluminum Alloys

4. UNITS OF MEASURE

4.1 All pipe sizes are given in diameter nominal (DN) with nominal pipe sizes (NPS) given in parentheses.

4.2 All dimensions are given in millimeters (mm) with inches (in) in parentheses. Metric dimensions take precedence.

4.3 All pressures are given in bar gauge with pounds per square inch gauge (psig) in parentheses.

4.4 All temperatures are given in degrees Celsius (°C) with degrees Fahrenheit (°F) in parentheses.

5. general

5.1 Pressure testing is not required by this specification. Couplings and adapters within this specification have been designed to be capable of withstanding a hydrostatic test pressure as described in Section 10 of ASTM B 361.

5.2 Couplings and adapters are rated for a design pressure of 70 bar g (1015 psig) over the design temperature range.

5.3 Couplings and adapters design temperature range: -212° to +65C (-350 to +150F).

6. MATERIALs

6.1 Adapters and couplings shall be made from aluminum bar or plate meeting the following requirements. Sections A, E, or M fittings shall be per Table 1 – Material Specification for Aluminum Bar or Plate (5083 or 5086). Equivalent ASME material grades may be substituted for materials specified as ASTM. Section C fittings shall be per Table 1A – Chinese Material Specification for Aluminum Bar or Plate (5083).

7. DIMENSIONS, TOLERANCES, AND END PREPARATION

7.1 Coupling and adapter dimensions, tolerances, and end preparation shall be in accordance with details D001 to D008. Socket-weld end dimensions shall be in accordance with ASME B16.11. Threaded connections shall be NPT in accordance with ASME B1.20.1.

8. INSPECTION, EXAMINATION, AND TESTING

8.1 Tees to detail D003 shall be subject to 100% dye penetrant examination on all external surfaces. No surface-breaking defects are acceptable.

8.2 All other items shall be 100% visually examined on all internal and external surfaces. No surface-breaking defects are acceptable.

9. MARKING

9.1 Marking shall be in accordance with 4WPI-M00001.

10. CLEANING AND PACKAGING

10.1 Each fitting shall be cleaned for oxygen service to meet the Class AA acceptance criteria of
4WPI-SW70003. After cleaning, fittings shall be sealed in a plastic bag and labeled, “Cleaned For Oxygen Service.”

10.2 Suitable packing shall be provided to ensure that all fittings arrive at their contractual point of delivery in an undamaged condition. Refer to the purchase order for specific packing standards and instructions.

11. DOCUMENTATION

11.1 Adapters and couplings shall de delivered with the following documentation: Material certifications are required for each heat number per purchase order. Material certification shall include actual chemicals and mechanical test data. A certificate of conformance shall be supplied for each purchase order, certifying that couplings and adapters meet the requirements of this specification. In Europe only, a test certificate Type 3.1B to EN 10204 shall be provided for the finished item.

11.2 Each purchase order shall be delivered with two sets of documents. One set shall be delivered with the fittings and the other shall be delivered to the originator of the purchase order.

12. Definitions of Abbreviations and Symbols

bar g = fluid pressure (gauge) DIA = Diameter DN = Diameter Nominal I.D. = inside diameter MAX = maximum MIN = minimum mm = millimeters O.D. = outside diameter psig = pounds per square inch gauge TYP = typical ° = degrees ” = inches

Detail D001 Concentric Reducer DN8 (NPS 1/4) SW x DN15 (NPS 1/2) SW

Notes: All dimensions are given in mm (in). Socket and fitting bore shall be concentric within a tolerance of ± 0.8 (0.030). Application: Connection to plain end pipe or nozzle.

Detail D002 Concentric Reducer DN8 (NPS 1/4) SW x DN20 (NPS 3/4) SW

Concentric Reducer DN8 (NPS 1/4) SW x DN20 (NPS 3/4) SW

Notes: All dimensions are given in mm (in). Socket and fitting bore shall be concentric within a tolerance of ± 0.8 (0.030). Application: Connection to lower liquid level pipe.

Detail D003 Tee DN8 (NPS 1/4) SW Tee DN8 (NPS 1/4) SW

Notes: All dimensions are given in mm (in). Socket and fitting bore shall be concentric within a tolerance of ± 0.8 (0.030). Application: For auxiliary instrument runs (before a penetration for closed coupled transmitters).

Detail D004 Coupling DN8 (NPS 1/4) SW x DN8 (NPS 1/4) SW

Coupling DN8 (NPS 1/4) SW x DN8 (NPS 1/4) SW

Notes: All dimensions are given in mm (in). Socket and fitting bore shall be concentric within a tolerance of ± 0.8 (0.030). Application: Repair coupling (continuous runs are preferred).

Detail D005 Coupling DN8 (NPS 1/4) SW x DN8 (NPS 1/4) SW (Plugged)

Coupling DN8 (NPS 1/4) SW x DN8 (NPS 1/4) SW (Plugged)

Notes: All dimensions are given in mm (in). 3.8 (0.15) minimum weld by cold box fabricator. Scribe line shall be etched by supplier. Socket and fitting bore shall be concentric within a tolerance of ± 0.8 (0.030). Application: Coupling for pressure test (continuation at later time).

Detail D006 Adapter DN8 (NPS 1/4) SW x DN15 (NPS 1/2) PE

Adapter DN8 (NPS 1/4) SW x DN15 (NPS 1/2) PE

Notes: All dimensions are given in mm (in). Socket and fitting bore shall be concentric within a tolerance of ± 0.8 (.030). Application: Connection to sockolet or process line.

Detail D007 Coupling DN8 (NPS 1/4) SW x DN15 (NPS 1/2) Female NPT

D007 Coupling DN8 (NPS 1/4) SW x DN15 (NPS 1/2) Female NPT

Notes: All dimensions are given in mm (in). Socket and fitting bore shall be concentric within a tolerance of ± 0.8 (.030). Application: Coupling for purge lines inside the cold box.

Detail D008 Cap DN8 (NPS 1/4) SW

D008 Cap DN8 (NPS 1/4) SW

Notes: All dimensions are given in mm (in). Socket and fitting bore shall be concentric within a tolerance of ± 0.8 (.030). Application: For capping instrument pipe.

Table 1 Material Specification for Aluminum Bar or Plate (5083 or 5086)

Note: This specification shall be used in conjunction with 4WPI-M00001.

Scope Description	Aluminum bar or plate
Material Specification	ASTM B 209 or ASTM B 221 (or ASME SB-209 or ASME SB-221). Alloy: 5083 or 5086. Temper: O.
Dimensional Specification	None
Purchase Order	See purchase order for type and size of material, number of pieces, and delivery and shipping instructions.
Lengths	Not applicable
Tolerances	ASTM B 209 or ASTM B 221 (or ASME SB-209 or ASME SB-221)
Drawings	Not required
Calculations	Not required
Chemical Composition	ASTM B 209 or ASTM B 221 (or ASME SB-209 or ASME SB-221), Alloy 5083 or 5086
Mechanical Strength	ASTM B 209 or ASTM B 221 (or ASME SB-209 or ASME SB-221), Alloy 5083 Temper O or Alloy 5086 Temper O
Welding	Not applicable
Heat Treatment	ASTM B 209 or ASTM B 221 (or ASME SB-209 or ASME SB-221), Alloy 5083 Temper O or Alloy 5086 Temper O
Inspection	ASTM B 209 or ASTM B 221 (or ASME SB-209 or ASME SB-221). Air Products inspection is not required, unless specified in the purchase order.
Testing	ASTM B 209 or ASTM B 221 (or ASME SB-209 or ASME SB-221)
Examination	ASTM B 209 or ASTM B 221 (or ASME SB-209 or ASME SB-221)
Certificate	Mill certificates or, in Europe only, inspection certificate Type 3.1B to EN 10204
Marking	ASTM B 209 or ASTM B 221 (or ASME SB-209 or ASME SB-221). Marking shall also include the heat identification.
Protection	ASTM B 209 or ASTM B 221 (or ASME SB-209 or ASME SB-221)
Color Coding	Not required
Packing	Packing shall be provided such that the fittings arrive at their contractual point of delivery in an undamaged condition. Refer to the purchase order for specific packing standards and instructions.
Special Requirements	None

Table 1A Chinese Material Specification for Aluminum Bar or Plate (5083)