Legend Valve
Legend Valve 303-124NL 1/2" x 3/4" Brass Compression Coupling
Connects 1/2 inch and 3/4 inch tubing with no-lead brass compression fittings
- No-lead brass for safer potable water use
- 1/2" x 3/4" compression ends fit different tubing sizes
- Legend Valve brand trusted in plumbing applications
- California Prop 65 warning disclosed for chemical transparency
- New condition ensures full factory performance
Brass Compression Coupling for Air Lines
This 1/2-inch by 3/4-inch no-lead brass compression coupling connects copper or plastic tubing in compressed-air systems. The no-lead alloy satisfies California Proposition 65 requirements for drinking-water contact, making it suitable for potable-water supply lines as well as pneumatic installations.
Sealed Joint Without Heat
Compression fittings create a leak-tight seal by mechanically deforming a ferrule onto the tube outer diameter, so no solder, flux or open flame is required. The brass body resists corrosion from moisture in compressed air and handles typical shop pressures without measurable pressure drop across the joint.
Ready to Install
Each coupling includes the compression nuts and ferrules needed for both the 1/2-inch and 3/4-inch ends, so no separate parts must be sourced. The no-lead brass construction eliminates the lead-content restriction that applies to standard brass fittings in California, allowing the same fitting to be used on both pneumatic and potable-water circuits.
Highlights
- No-lead brass for safer potable water use
- 1/2" x 3/4" compression ends fit different tubing sizes
- Legend Valve brand trusted in plumbing applications
- California Prop 65 warning disclosed for chemical transparency
- New condition ensures full factory performance
Specifications
| Brand | LEGEND VALVE |
|---|
Questions about this item
How do I install the 1/2" x 3/4" compression coupling and what step is commonly missed?
Slide the nut and ferrule onto each tube, insert tubes fully into the coupling body, then tighten both nuts with two wrenches; the step often missed is ensuring tubes are fully seated before final tightening.
What maintenance or replacement will the no-lead brass coupling need over time?
Inspect periodically for leaks or corrosion; replace the ferrule if a joint is ever disassembled, as the compression ring deforms to seal and cannot be reused reliably.
What limit appears first on the 303-124NL coupling under sustained pressure cycles?
The brass body and ferrule maintain their seal within rated pressure; the first limit is typically ferrule fatigue from repeated thermal or vibration cycling, requiring joint remake.
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