1. Material Finish – The brass fittings have a smooth, consistent machining and casting finish with clear markings (ASTM F1807, NSF certifications), which indicates proper manufacturing standards. Cheap fittings often show rough edges, uneven casting, or discoloration, none of which are present here.
  2. Lead-Free DZR Brass – The bright gold finish shows they are made from dezincification-resistant brass (DZR), which prevents corrosion and leaching. This is the standard for potable water systems in the USA.
  3. Poly Alloy Fittings – The black plastic fittings are dense and uniform with no visible warping. High-quality poly fittings are strong, lightweight, and designed to resist cracking under pressure and temperature fluctuations.
  4. ASTM/NSF Compliance – The fittings are stamped with compliance codes (F1807 for brass, F2159 for poly). These markings are critical because they certify the fittings are approved for drinking water and heating system installations.
  5. Design Precision – The barbs look sharp and uniform, which ensures a proper grip on PEX tubing. Inconsistent barbs can cause leaks.

Overall, these look like professional-grade PEX fittings that would hold up in residential and commercial plumbing applications.

Related Products