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DMfit quick fit fittings tubing acetal resin inch size food&drink beverage compressed air flow systems RO reverse Osmosis Water Filters

Material Standards   Outer Diameter Tolerance Limit of Tubing Used with Fittings
Material Options Fittings Color O-Rings Size Tollerance
A - Acetal Gray, Black,
White
NBR /
EPDM

Small Size

5/32“, 4mm ±0.004“(±0.1mm)
3/16“, 5mm
1/4“, 6mm
P - Polypropylene White 5/16“, 8mm
3/8“, 10mm
1/2“, 12mm
B - Brass Brass or
Chromed
Large Size 5/8“, 15(16)mm
7/8“, 18(22)mm
28mm
  * For use at higher temperatures or pressures, please contact your DMfit representative for assistance.

Fitting Working Pressure and Temperature

Small Size Large Size
5/32“ 3/16“ 1/4“ 5/16“ 3/8“ 1/2“ 5/8“ 7/8“ 28mm
4mm 5mm 6mm 8mm 10mm 12mm 15mm 16mm 18mm 22mm
1°C
(34°F)
16bar (230PSI) 11bar
(170PSI)
11bar (170PSI)
20°C
(68°F)
16bar (230PSI) 11bar
(170PSI)
11bar (170PSI)
65°C
(150°F)
10bar (150PSI) 7bar
(100PSI)

7bar (100PSI)

Maximum Permissible Torque
1/8", 1/4" 3/8", 1/2" 3/4"
Plastic Maximum
Torque
(N·m) 1.5 3.0 4.0
Steel Maximum
Torque
(N·m) 7.0~9.0 12.0~14.0 22.0~24.0 28.0~30.0 40.0
*The above values are averange maximum applied torque. Actual results may vary.

- Cut the part of the tube to be inserted into the fitting to plane the end.

- Make sure to use a clean tube without any foreign material or cracks.

- When inserting the tube, remove any obstructions before fully inserting the tube.

-Inserting the tube into the fitting only takes moderate force. The tube or fitting should not be scratched or damaged in the process, as this is the main cause for water leaks later on.

- To make sure that the fitting is properly connected to the tube, pull it once. After pulling insert a spanner under the collet and push the tube into the fitting once more for a complete insertion. - When no play is desired for the fitting and tube, use our company's LC to eliminate the play of the fitting.

- Make sure to completely eliminate pressure before disassembling the fitting.

- When disassembling the tube, push the clip in direction of the main assembly and then pull the tube out for easy disassembling.

- Fittings and tubes can be reused.

Material Characteristics
Acetal resin: Also know as POM. Highly durable and resistant to fatique and creep. It has high resistance to a wide range of organic and inorganic chemicals and detergents. Not recommended for use with strong acids or repeated exoposure to strong oxidizers.

Polypropylene: Has excellent chemical resistance, cold endurance and high tolerance to oxidizers.


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Straight adaptor OD Tube - MFL thread
Straight adaptor OD Tube - MFL thread
D006
MFL Thread MFL 1/4 Corresponds to a 7/16 - 20 UNF MFL 5/16 Corresponds to a 1/2 - 20 UNF MFL 3/8 Corresponds to a 5/8 - 18 UNF MFL 1/2 Corresponds to a 3/4 - 16 UNF
Female adaptor OD Tube - UNF thread (V Type)
Female adaptor OD Tube - UNF thread (V Type)
D018
UNF Thread UNF 7/16 Corresponds to a 1/4 MFL UNF 5/8 Corresponds to a 3/8 MFL
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