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The PRO-SOURCE 2555504765PRO is a push-to-connect tube-to-universal-thread fitting designed for fast, tool-free tube connections in compressed air and water systems. Constructed from nickel-plated brass, the fitting is rated to 250 psi and uses a Buna-N O-ring seal for reliable leak resistance. It accepts tubing with a 4.00 mm outside diameter and connects to universal thread ports. This fitting is commonly installed by HVAC technicians, plumbers, and industrial maintenance professionals who need a quick, dependable connection without soldering or flare tools. Each package contains 5 fittings.
This fitting is suited for light commercial and industrial pneumatic plumbing, compressed air distribution, and potable or process water lines where a push-to-connect interface meets a universal threaded port. Its compact profile makes it practical in tight panel or manifold installations. The nickel-plated brass construction resists corrosion in both wet and dry service environments, making it a dependable choice for HVAC control lines, pneumatic actuator supply lines, and general fluid transfer applications.
Designed for use with compressed air and water systems requiring a push-to-connect tube fitting with a universal thread port. Compatible with tubing measuring 4.00 mm outside diameter.
Depressurize and isolate the line before removing or installing any push-to-connect fitting. Ensure tubing is cut cleanly and squarely, and that the outer diameter is within the specified range before insertion. Thread connections should be made hand-tight and verified for seating before repressurizing. HVAC technicians and plumbers should confirm fitting pressure ratings are appropriate for the system operating conditions before placing into service.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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