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Black reducing coupling with tapered ends, 3 by 1-1/2 inches, FNPT threads

Legend Valve

Legend Valve 350-558 3 x 1-1/2 Black Reducing Coupling

SKU CH-32SC-Z5JK6

Connects 3-inch and 1-1/2-inch black iron pipes with female NPT threads

  • Reduces pipe size from 3 in to 1-1/2 in for flexible plumbing layouts
  • Female NPT threads on both ends allow direct connection to standard fittings
  • Black steel construction resists corrosion in water and gas systems
  • California Proposition 65 warning alerts installers to listed chemical hazards
  • New condition ensures clean threads and full factory performance

3 x 1-1/2 Black Reducing Coupling

The Legend Valve 350-558 is a 3 inch by 1-1/2 inch SA black reducing coupling with FNPT x FNPT threads. It joins two female threaded pipes of different diameters in plumbing systems. This new component suits installers who need a straightforward reduction between these specific sizes.

Threaded reduction for pipe transitions

The coupling fits directly onto male NPT threads without additional adapters, simplifying the joint where a 3 inch line meets a 1-1/2 inch line. Its black finish matches standard steel pipe aesthetics. The single-piece body eliminates the need for separate bushings or nipples in this size combination.

Replaces multi-fitting reducer assemblies

Compared with assembling a reducer from multiple bushings, this coupling reduces potential leak paths and installation time. The jump is worth it when a direct 3 inch to 1-1/2 inch female-to-female connection is required and California Proposition 65 compliance is acknowledged. It does not serve applications needing male threads, different diameters, or non-NPT thread standards.

How it compares

Measured against everything we stock in Garden Hoses & Pipe Tubing, at today’s prices. Recalculated every night.

Price $22.99
Typical for this category: the median of 973 items is $21.99.

Specifications

Product
Brand nameLEGEND VALVE

Questions about this item

How does the 3 inch by 1-1/2 inch FNPT reducing coupling handle continuous pressure in a plumbing system?

The black reducing coupling connects 3 inch and 1-1/2 inch female NPT threads for a permanent, leak-free joint in water, gas or air lines.

Will the fitting become hot or noisy when water flows through it all day?

The coupling has no moving parts and generates no noise or heat during continuous flow.

What pipe threads must already be on the system for this coupling to install?

Both ends require female NPT threads — one 3 inch and one 1-1/2 inch — to screw the coupling in place.

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