1X3/4X18 NXN S/S FLEX

📦 Product description:

A corrugated stainless steel flex connector used to connect water supply lines between piping and fixtures (commonly water heaters).

🧾 Breaking it down:

• 1 X 3/4 X 18
  • 1" inlet size
  • 3/4" outlet size
  • 18" length
• NXN → NPT x NPT (male threaded both ends or nipple connections, depending on vendor shorthand)
• S/S → Stainless Steel
• FLEX → Flexible corrugated connector

🔧 What it’s used for:

• Connecting water heaters
• Hooking up plumbing fixtures to supply lines
• Allowing flexibility where rigid pipe would be difficult to install
• Absorbing vibration and minor movement in piping systems

⚙️ Typical specs:

• Corrugated 304 stainless steel body
• Brass or stainless end fittings
• Temperature rated up to ~180–250°F (model dependent)
• Pressure rated ~125–200 PSI
• NSF/ANSI approved for potable water in most versions

🧠 Simple explanation:

It’s a flexible stainless steel water line that connects a 1-inch pipe to a 3/4-inch pipe over an 18-inch span, commonly used on water heaters so installation doesn’t require rigid alignment.