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The DM-Fit ATEU0404 is a professional-grade 1/4 inch stem to 1/4 inch push-fit elbow connector, engineered for professionals and DIY enthusiasts working with fluid, gas, or pneumatic systems. Its primary benefit is the reliable, leak-proof seal provided by the advanced acetal copolymer construction and its tool-free installation mechanism. While highly versatile and safe for food-grade environments, users should note that it is designed specifically for standard 1/4 inch tubing, meaning it is not compatible with larger pipe diameters without additional adapters.
| Model Part Number | ATEU0404 |
|---|---|
| Brand | DMFit |
Yes, it is manufactured from food-grade acetal copolymer and carries FDA, WRAS, and ANSI/NSF certifications.
The connector is rated for a maximum operating pressure of 10 bar.
It is designed primarily for flexible plastic tubing. Using it with hard metal tubing may damage the internal O-ring seal.
No, the push-fit design creates an airtight seal using internal O-rings; Teflon tape is not required or recommended for this fitting.
While acetal is durable, please consult the specific temperature range for your tubing, as most 1/4 inch flexible tubing is limited to ambient or warm water temperatures.
Check that the tubing end is cut perfectly square and not damaged. Re-insert the tubing firmly.
Ensure the collet is clean and not obstructed. Verify the tubing diameter is exactly 1/4 inch.
Push the tubing slightly into the fitting first, then hold the oval collet down firmly while pulling the tubing out.
To ensure a perfect, leak-free installation, ensure the end of your 1/4 inch tubing is cut perfectly square and is free of burrs or scratches. Insert the tubing firmly into the push-fit side of the connector until you feel it seat fully against the internal stop. To release, push the oval collet inward toward the body of the fitting while pulling the tube out gently.
Compatibility includes standard plastic tubing (LLDPE or Polyurethane) suitable for potable water or air. For maintenance, keep the connector free of heavy debris and avoid using harsh chemical solvents that could degrade the acetal plastic. If the connector is exposed to freezing temperatures, ensure the system is drained to prevent ice expansion damage.
