(NOTE: This is a words-only version of an Orion Fittings standard operating procedure [SOPs]. Later, I will attach a PDF of the original, which has photos and captions.)
1 Objective:
This document instructs how to make socket fusion adapters to connect metric SDR (Standard Diameter Ratio) pipe to IPS (Iron Pipe Size) pipe. IPS means English units of measurement (inches, feet, etc.) as opposed to metric (millimeters, centimeters, etc.) While the Orion socket fusion metric-to-IPS adapters described in this SOP are similar to the plain end metric-to-IPS adapters described in SOP #112, their fabrication differs.
2 Scope:
The scope of this document is to demonstrate how to fabricate five socket fusion adapters.
3 Policy: N/A.
4 Definitions:
4.1 Warnings Cautions and Notes
WARNING: A warning indicates to the reader that if the information provided is NOT followed, serious personal injury or death can occur. A warning is preceded by a red triangle containing an exclamation mark.
CAUTION: A caution indicates to the reader that if the information provided is NOT followed, damage to the equipment or material can occur. A caution is preceded by a yellow triangle containing an exclamation mark.
NOTE: A note provides useful information that helps the reader to perform a task or procedure.
4.2 Terms used in this document.
| Term | Definition |
| IPS | Iron Pipe Size (i.e., inches, feet, etc.) |
| Metric | Millimeters, centimeters, meters, etc. |
| SDR | Standard Diameter Ratio, which is defined as the ratio of the nominal outside diameter to the nominal wall thickness. |
| ID | The inner dimension of a donut is the diameter of the donut hole. |
| OD | The outer dimension of a donat is the diameter of the entire donut. |
4.3 Safety General Rules.
- Take proper precautions around electrical equipment and follow all instructions.
- Follow Orion’s specific guidelines for proper material installation.
- Wear OSHA-approved steel-toe shoes.
- Wear safety glasses.
- Wear heat-resistant gloves while handling welding irons.
- Be careful when handling hot irons.
5 Responsibilities:
Machinists.
6 Reference Documents:
Fabrication of Plain End Metric-to-IPS Adapters, OR-SOP-112.
7 Procedure:
7.1 Fabricating socket fusion metric-to-IPS adapters.
7.1.1 This document is similar to SOP-112 Machining Plain End Metric-to-IPS Adapters, but not identical. The purposes may be similar, but the fabrications are not.
- The socket fusion diameters are smaller, only ½ inch to about 2 ½ inches.
- All five of the socket fusion adapters require machining. Plain end do not.
- While fabricating plain end adapters have the same steps regardless of the diameter of the pipes, the size of the socket fusion is a factor in determining the method of making adapters. Some will bored to specific IPS diameters, while others will be to metric.
7.2 For the smaller adapters.
7.2.1 Measure original coupling, using IPS units (i.e., measure by inches, not millimeters.)
7.2.2 Securely attach the coupling to lathe jaws.
7.2.3 Use the table below to set up the lathe for expanding the coupling’s inner dimension (ID). Note that for the three below, one end of coupling will be machined so that a IPS-measured pipe can fit into it.
| Part # | Abbreviation | Original ID | Widen to | To Weld With |
| 784519 | SF WH PVDF 20mm CLS | 0.740 | 0.804 | ½ inch IPS pipe. |
| 784537 | SF WH PVDF 25mm CLS | 0.942 | 1.010 | ¾ inch IPS pipe. |
| 784566 | SF WH PVDF 32mm CLS | 1.210 | 1.258 | 1 inch IPS pipe. |
7.2.4 Install the parting tool on the lathe.
7.2.5 Turn on the lathe.
7.2.6 Lightly touch the tool on the coupling.
7.2.7 Pull back the tool, turn off the lathe, and examine the coupling to see if the cut is in the correct place.
7.2.8 Turn on the lathe, move tool toward the coupling, resume cutting, and complete the widening.
7.2.9 Turn off the lathe.
7.2.10 If the widening was correct, the connecting pipe will be able to fit snugly into the coupling.
7.3 For the larger adapters.
7.3.1 Measure original coupling, using metric units (i.e., millimeters, not inches.)
7.3.2 Securely attach the coupling to lathe jaws.
7.3.3 Use the table below to set up the lathe for expanding the coupling’s inner dimension (ID). Note that for the three below, one end of coupling will be machined so that a metric-measured pipe can fit into it.
| Part # | Abbreviation | Original ID | Widen to | To Weld With |
| 750412 | SF WH PVDF 1 ½ inch CLS | 1.840 | 1.940 | 50 mm pipe. |
| 750610 | SF WH PVDF 2 inch CLS | 2.302 | 2.425 | 63 mm pipe. |
7.3.4 Install the parting tool on the lathe.
7.3.5 Turn on the lathe.
7.3.6 Lightly touch the tool on the coupling.
7.3.7 Pull back the tool, turn off the lathe, and examine the coupling to see if the cut is in the correct place.
7.3.8 Turn on the lathe, move tool toward the coupling, and complete the widening.
7.3.9 Turn off the lathe.
7.3.10 If the widening was correct, the connecting pipe will be able to fit snugly into the coupling.
rodmutt 