RapidAir MaxLine Union Fittings — Equal & Reducing Compression Unions, 1/2", 3/4" & 1"
The RapidAir MaxLine Union Fitting joins two lengths of MaxLine tubing into one continuous, leak-proof run. Use it to extend an existing line, splice in a repair, or connect two sections where you don't need an outlet — no gluing, threading, soldering, or crimping required. Push the tubing in and the compression seal does the rest.
Each union is machined from nickel-plated solid brass and uses a double O-ring compression design on both ends for a secure, vibration-resistant seal. Equal unions connect two tubes of the same diameter; reducing unions step between sizes, so you can transition a 1" main down to a 3/4" or 1/2" branch without extra adapters.
Key specifications
- Material: Nickel-plated solid brass
- Connection: Tubing-to-tubing compression with double O-ring seal (no glue, thread, solder, or crimp)
- Working pressure: 175 PSI at 70°F (140 PSI at 140°F)
- Compatibility: RapidAir MaxLine semi-flexible aluminum-core tubing
- Configurations: Equal unions (1/2", 3/4", 1") and reducing unions (3/4"×1/2", 1"×1/2", 1"×3/4")
Available configurations
- M8021 — 1/2" × 1/2" equal union
- M8022 — 3/4" × 3/4" equal union
- M8023 — 1" × 1" equal union
- M8024 — 3/4" × 1/2" reducing union
- M8020 — 1" × 1/2" reducing union
- M8025 — 1" × 3/4" reducing union
Applications
Ideal for auto and fleet shops, farms, woodworking and fabrication shops, and light manufacturing — anywhere a MaxLine compressed air system needs to be extended, repaired, or branched to a new tubing size.
Select your size and configuration above. Pair MaxLine union fittings with MaxLine tubing, elbows, tees, and outlet kits to build a complete, expandable compressed air piping system with a clean, professional, leak-free finish.
Compliance & Restrictions
For use in compressed air systems only; not intended for potable water. Non-returnable. WARNING: Cancer and Reproductive Harm — www.p65warnings.ca.gov.
NOTE: Actual product may be different from pictured!
Financing Options
Financing Options
We offer Financing Through Many Different Avenues:
- Affirm is great for smaller purchases. You can do this during checkout.
- Clicklease is a great option for Instant decisions up to 25k. NO Hard credit pull. No Time in Business Required. More information can be found out about it here: https://www.clicklease.com/partner/warthog-air-compressor-store
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