Compression Fittings
description
Transcript of Compression Fittings
Compression Fittings
External nut type series 43
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
Thread and tube sizes Threads range taper
R 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
Parts of a fitting Tubing nut Tubing sleeve Body Plastic washer on bodies
with parallel threads
Tube preparation
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
Tube assembly
External nut compression fitting
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
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
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
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
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
Tube assembly Air pressure may then be applied
Tube removal
External nut compression fitting
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
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
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
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
Fittings range
External nut compression series 43
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
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
End
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 15Polyurethane (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
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 0.430.95 0.88 0.54 0.29
Pressure adjustment factorsFor compressed air above 16 bar consult our technical service
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
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
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
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
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