Installation for Compression Fittings |
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Installation for Solder ring and Ends Feed Fittings |
Preliminaries |
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Preliminaries |
1. Cut the pipe using a wheel pipe cutter to ensure a square pipe end.
2. Check that the pipe end is free from burrs and sharp edges.
3. If a hacksaw is used to cut the pipe extra care should be taken to ensure that the pipe end is free from burrs and properly chamfered. |
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1. Cut the pipe using a wheel pipe cutter to ensure a square pipe end.
2. Check that the pipe end is free from burrs and sharp edges.
3. If a hacksaw is used to cut the pipe extra care should be taken to ensure that the pipe end is free from burrs and properly chamfered.
4. Clean the socket of the fittings and the exterior of the pipe with fine steel wool or fine glass paper. |
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Assembly |
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Assembly |
1、EITHER a. Insert the pipe into the fittings, ensuring that the ring is in the correct position and that the pipe makes firm contact with the stop in the body of the fittings.
OR b. Unscrew the capnut and ring from the fitting. Slide the capnut and ring onto the pipe and insert the pipe into the fitting as far as the pipe stop. |
1. Use a brush to smear flux over the end of the pipe and the inner rim of the fitting.
2. Push the pipe into fitting so that it rests against pipe stop, twisting a little to help spread the flux, Re-move excess flux with a cloth.
3. Make other side of joint in same way, and then apply blow-torch. Seal is complete when bright ring of solder is visible at ends of fitting Wipe off excess solder and leave the joint to cool undisturbed.
4. For ends feed fitting, heat the pipe, then hold the solder to mouth of joint. A bright ring all the way round signifies a seal. Wipe off excess solder and leave the joint to cool undisturbed. |
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2. In both cases, tighten the capnut onto the fitting by hand as far as possible. |
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3.Tighten the capnut with a good, wellfitting spanner, using the table shown below as a guideline |
Pipe size Guide to tightening |
15mm1Turn |
22mm1Turn |
28mm1Turn |
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35mm3/4Turn |
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42mm3/4Turn |
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54mm 3/4Turn |
Note： |
Over-tightening will not produce a better joint, and may lead to problems in service |
Working temperatures and pressures |
Working temperatures and pressures |
Service temp.Hydraulic pressure |
Service temp. Hydraulic pressure |
30°c 16bar |
30°c 16bar |
65°c 10bar |
65°c 10bar |
110°c6bar |
110°c6bar |
