Super Speedfit® fittings are suitable for the following pressures and temperatures.
Acetal Fittings
| Air |
| Temp. | Pressure |
5/32" – 5/16"
4mm – 8mm | 3/8" -1/2"
10mm – 22mm |
| Potable Liquids and Air |
| Temp. | Pressure |
| -4°F | 230 psi | 150 psi |
| -20°C | (16 Bar) | (10 Bar) |
| Temp. | Pressure |
| +33°F | 230 psi | 150 psi |
| +1°C | (16 Bar) | (10 Bar) |
| +68°F | 230 psi | 150 psi |
| +20°C | (16 Bar) | (10 Bar) |
| +150°F | 150 psi | 100 psi |
| +65°C | (10 Bar) | (7 Bar) |
Polypropylene Fittings
| Water |
| Temp. | Pressure |
| +70°F | 150 psi |
| +20°C | (10 Bar) |
| +140°F | 60 psi |
| +60°C | (4 Bar) |
The minimum temperature for the polypropylene is 33°F/1°C.
The polypropylene fittings are not suitable for compressed air application. The acetal Super Speedfit® fittings are what they recommended for compressed air applications.
Title: What are the working pressures and temperature ratings for the John Guest® Super Speedfit® fittings?
Description: Working pressure and temperature range for Acetal fittings
Published: 1/24/2012
Last Edited: 1/19/2023
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