compression fittings external nut type series 43
TRANSCRIPT
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Compression Fittings
External nut type series 43
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External nut (compression fittings)
Rugged and durable General purpose Wide range of thread and
tube sizes For use with compressed
air, compatible oils and water
Can be used with plastic or metal tube
Suitable for low and high operating temperatures*
Vacuum to high pressure*
* see tube pressures
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Thread and tube sizes
Threads range taperR 1/8, R 1/4, R 3/8, R 1/2, R 3/4, R 1
Threads range parallelG 1/8, G 1/4, G 3/8, G 1/2
Tube range mm o/d4, 6, 8, 10, 12, 14, 15, 16, 18, 22
Materials Nickel plated brass body
and nut Brass tubing sleeve
Tube
Thread
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Parts of a fitting
Tubing nut Tubing sleeve Body Plastic washer on bodies
with parallel threads
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Tube preparation
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Tube preparation For plastic tube use a standard tube cutter to give a
square end Ensure that the tube end is clean and free from surface
damage For metal tube use correct cutting equipment and ensure
the tube end is free from burrs
900
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Tube assembly
External nut compression fitting
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Tube assembly
Place the tubing nut and sleeve on to the tube push the tube in up to the tube stop and hold it there Screw the tubing nut until finger tight With a spanner tighten the nut by 11/4 to 11/2 turns
Undo the joint and check the sleeve has been swaged evenly. Reassemble and tighten an extra 1/4 turn
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Tube assembly
Place the tubing nut and sleeve on to the tube push the tube in up to the tube stop and hold it there Screw the tubing nut until finger tight With a spanner tighten the nut by 11/4 to 11/2 turns
Undo the joint and check the sleeve has been swaged evenly. Reassemble and tighten an extra 1/4 turn
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Tube assembly
Place the tubing nut and sleeve on to the tube push the tube in up to the tube stop and hold it there Screw the tubing nut until finger tight With a spanner tighten the nut by 11/4 to 11/2 turns
Undo the joint and check the sleeve has been swaged evenly. Reassemble and tighten an extra 1/4 turn
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Tube assembly
Place the tubing nut and sleeve on to the tube push the tube in up to the tube stop and hold it there Screw the tubing nut until finger tight With a spanner tighten the nut by 11/4 to 11/2 turns
Undo the joint and check the sleeve has been swaged evenly. Reassemble and tighten an extra 1/4 turn
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Tube assembly
Place the tubing nut and sleeve on to the tube push the tube in up to the tube stop and hold it there Screw the tubing nut until finger tight With a spanner tighten the nut by 11/4 to 11/2 turns
Undo the joint and check the sleeve has been swaged evenly. Reassemble and tighten an extra 1/4 turn
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Tube assembly
Air pressure may then be applied
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Tube removal
External nut compression fitting
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Tube removal (compression fitting)
Turn off and exhaust the pressure Undo the tubing nut and pull out the tube The tubing sleeve is permanently swaged to the tube The joint can be made and remade many times If the tube is cut to shorten it, a new sleeve is required but
the tubing nut can be reused
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Tube removal (compression fitting)
Turn off and exhaust the pressure Undo the tubing nut and pull out the tube The tubing sleeve is permanently swaged to the tube The joint can be made and remade many times If the tube is cut to shorten it, a new sleeve is required but
the tubing nut can be reused
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Tube removal (compression fitting)
Turn off and exhaust the pressure Undo the tubing nut and pull out the tube The tubing sleeve is permanently swaged to the tube The joint can be made and remade many times If the tube is cut to shorten it, a new sleeve is required but
the tubing nut can be reused
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Tube removal (compression fitting)
Turn off and exhaust the pressure Undo the tubing nut and pull out the tube The tubing sleeve is permanently swaged to the tube The joint can be made and remade many times If the tube is cut to shorten it, a new sleeve is required but
the tubing nut can be reused
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Fittings range
External nut compression series 43
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Fittings range
Straight male adaptors taper
Straight male adaptors parallel
Straight female adaptors Male elbow adaptors Elbow banjo assemblies Straight connectors Elbow connectors Plugs ( like a solid tubing
sleeve ) Reducing connectors
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Fittings range
Tee connectors Male tee adaptors Male side tee adaptors Four way connectors Bulkhead connectors Straight stem adaptors Stem tailpiece connectors Tube supports for soft
plastic tubing Conical tubing sleeves
and nuts for metal tubing
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End
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Pressure rating
O/D mm 4 5 6 8 10 12 14 16 22 28
Polyamide (PA) 28 31 25 19 24 18 15 18 15 15
Polyurethane (PU) 10 11 10 9 9 9
Pressure values are for a temperature range -40 OC to +20 OC
Higher temperatures OC
Pressure adjustment factor
30 40 50 60 80
0.83 0.72 0.64 0.57 0.47
bar maximum
Plastic tube
For compressed air above 16 bar consult our technical service
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Pressure rating
O/D mm 4 5 6 8 10 12 16 22 28
128 138 112 81 64 81 59 53 41
Pressure values are for a temperature range -40 OC to +50 OC
Copper Annealed
Copper Half Hard 193 208 218 157 150 122 89 81 62
bar maximum
Copper and steel tube
Steel 300 250 195 160
OCAnnealed
100
Half Hard
150 175 2000.97 0.82 0.63 0.43
0.95 0.88 0.54 0.29
Pressure adjustment factors
For compressed air above 16 bar consult our technical service
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Reducing connector
The ferrule has a bore to accept the smaller tube size The ferrule makes a metal to metal seal in the fitting body The tubing sleeve is for the smaller tube The nut has a reduced tube diameter and seat
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Reducing connector
The ferrule has a bore to accept the smaller tube size The ferrule makes a metal to metal seal in the fitting body The tubing sleeve is for the smaller tube The nut has a reduced tube diameter and seat
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Reducing connector
The ferrule has a bore to accept the smaller tube size The ferrule makes a metal to metal seal in the fitting body The tubing sleeve is for the smaller tube The nut has a reduced tube diameter and seat
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Reducing connector
The ferrule has a bore to accept the smaller tube size The ferrule makes a metal to metal seal in the fitting body The tubing sleeve is for the smaller tube The nut has a reduced tube diameter and seat
![Page 31: Compression Fittings External nut type series 43](https://reader031.vdocuments.site/reader031/viewer/2022031921/56649d0b5503460f949de6f4/html5/thumbnails/31.jpg)
Reducing connector
The ferrule has a bore to accept the smaller tube size The ferrule makes a metal to metal seal in the fitting body The tubing sleeve is for the smaller tube The nut has a reduced tube diameter and seat
![Page 32: Compression Fittings External nut type series 43](https://reader031.vdocuments.site/reader031/viewer/2022031921/56649d0b5503460f949de6f4/html5/thumbnails/32.jpg)