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Brass press reducing coupling with 4-inch and 3-inch ends

Legend Valve

Legend Valve 450-559P 4x3 Press Reducing Coupling

SKU CH-9K9W-XG70C

A 4-inch by 3-inch press reducing coupling for joining different pipe sizes

  • Large 4" x 3" press reducing coupling for efficient pipe-size transitions
  • Press-fit design enables quick installation without soldering or threading
  • Legend Valve brand ensures reliable performance in plumbing systems
  • New condition guarantees full factory specification compliance
  • California Proposition 65 listed for cancer and reproductive-harm awareness

4x3 Press Reducing Coupling

The Legend Valve 450-559P joins four-inch and three-inch tubing using a press connection that removes the need for threading or soldering. It is intended for plumbers and contractors who need a reliable transition between different pipe diameters on the job site.

Sustained system pressure

The coupling maintains a permanent mechanical seal after pressing so the joint holds under continuous service pressure without loosening. No heat or open flame is required during installation which reduces the risk of fire or heat damage to surrounding materials.

Corrosion resistant construction

The fitting body resists corrosion and scale build up for long term durability in water supply and hydronic heating systems. Press jaws engage the full circumference of the fitting to create a uniform joint that is ready for pressure testing immediately after installation.

How it compares

Measured against everything we stock in Plumbing Valves & Valve Assemblies, at today’s prices. Recalculated every night.

Price $215.99
Pricier than about 81% of the 720 comparable items (median $47.49).

Specifications

Product
Brand nameLEGEND VALVE

Questions about this item

Does the 450-559P coupling generate noise, heat or draw power when installed in a pressurised line?

The 450-559P is a passive press fitting with no moving parts, so it produces no noise, no heat and consumes no power during continuous operation.

What pipe material and press tool must I already own for the 450-559P to seal correctly?

You need compatible 4-inch and 3-inch press-fit pipe (typically copper or stainless steel) and a calibrated press tool with the correct jaw profile for the 450-559P fitting.

Will the 450-559P couple directly to older threaded or sweat copper pipe without adapters?

The 450-559P is designed for press-to-press connections only; joining it to legacy threaded or sweat pipe requires separate transition adapters.

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