John Guest Super Speedfit –
easy to use push-in connectors
for minature pneumatic applications
The John Guest range of Super Speedfit push-in fittings have been specially designed for miniature pneumatics applications. They provide a fast and secure way of connecting tubes and offer considerable advantages over conventional fittings.
Complex tubing systems can be assembled more rapidly than with traditional methods and because Super Speedfit fittings are easy to disconnect, fault finding and maintenance become much easier operations.
They are particularly useful for development, testing or training programmes where systems may need to be constantly reconfigured. To make a connection, the tube is simply pushed in by hand; the unique John Guest collet locking system holds the tube firmly in place without deforming it or restricting flow.
Food Grade fittings are also available, see individual products in the Metric Range for suitability.
Look for the Food Grade Symbol: 
TECHNICAL SPECIFICATIONS
TUBE TYPES
Plastic Tube
Polyethylene, Nylon and Polyurethane conforming to the tolerances shown below. For soft tubing or thin wall tube we recommend the use of tube inserts.
The recommended minimum ID of Nylon tubes is shown in the table below.
Braided Tube
Use of Tube to Hose Stems and Elbows is essential when using braided tube. Use of clamps to retain braided tube on barbs is recommended.
Metal Tube (soft)
Brass, copper or mild steel conforming to the tolerances below.
Metal Tube (hard)
We do not recommend Super Speedfit Fittings for hard metal tubes.
MATERIAL SPECIFICATIONS
Bodies: acetal copolymer.
O-Rings: nitrile rubber.
Collets: acetal copolymer with stainless steel teeth.
TUBE TOLERANCES
John Guest fittings are intended for nylon tubes with the following dimensions.
Size (Inches)
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5/32 - 3/16
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1/4 - 1/2
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 |
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Tolerance (Inches)
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+0.001 / -0.003
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+0.001 / -0.004
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Size (mm)
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4mm- 5mm
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6mm - 22mm
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|
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Tolerance (mm)
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+0.05 / -0.07
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+0.05 / -0.10
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WORKING PRESSURE
John Guest Super Speedfit fittings are suitable for the following pressures.
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Temperature
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Size
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4mm- 8mm
5/32” - 5/16”
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10mm - 12mm 3/8” - 1/2”
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-20°C
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16 bar
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10 bar
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+23°C
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16 bar
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10 bar
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+70°C
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10 bar
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7 bar
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For other fluids and pressures please consult distributor.
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WORKING TEMPERATURE
-20°C to +70°C for use with air.
For below 0°C please consult distributor.
TYPICAL APPLICATIONS
• Aircraft and car manufacturing plants • Racing car preparation sites • ‘Clean’ rooms • Laboratories • Horticulture watering systems • Agriculture • Recreational vehicles • Yacht/boat water supplies • Pharmaceutical manufacturing • Food manufacturing • Etc.
INSTALLATION HAS NEVER BEEN EASIER
CUT PIPE SQUARE
Cut the pipe square. It is essential that the outside diameter be free of score marks and that burrs and sharp edges be removed before inserting into fitting.
PUSH UP TO PIPE STOP
Push the pipe into the fitting, to the pipe stop. The collet (gripper) has stainless steel teeth which hold the tube firmly in position whilst the O-ring provides a permanent leak proof seal.
PULL TO CHECK SECURE
Pull on the pipe to check it is secure. It is good practice to test the system prior to leaving site and/or before use.
DISCONNECTING
PUSH IN COLLET AND REMOVE PIPE
To disconnect ensure the system is depressurised before removing fitting. Push in collet squarely against face of fitting. With the collet held in this position, the pipe can be removed.
The fitting can then be re-used.