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Bronze inline swing check valve, sweat connections, 1 1/4 inch

Milwaukee Valve

Milwaukee Valve UP1509 1 1/4" Sweat Bronze Check Valve

SKU CH-GPKW-16X9A

Bronze inline swing check valve with sweat connections handles 54 gpm up to 300 psi at 150 °F

  • TypeOther
  • Low-lead bronze body meets safe-water requirements
  • Inline swing mechanism allows 54 gpm flow capacity
  • Sweat connections suit 1 1/4 in copper piping
  • Rated 300 psi at 150 °F for high-pressure systems
  • Operates from -20 °F to 200 °F across seasons

Bronze check valve for residential plumbing

The Milwaukee Valve UP1509 is a 1 1/4 inch sweat bronze check valve designed for residential water lines. Its inline swing mechanism allows flow in one direction while preventing backflow. The low-lead bronze body suits potable water systems. Installers who need a simple, reliable non-return valve for copper tubing will find it fits standard sweat connections.

Thermal and pressure performance in normal use

The valve operates from -20 degrees F to 200 degrees F and handles up to 300 psi water pressure at 150 degrees F. A cracking pressure between .750 and 1.000 psi opens the swing disc with minimal flow resistance. Bronze seat and seal materials maintain a tight seal across the temperature range. Steam service is not rated, so the valve should be limited to water applications.

What the sweat connection

Sweat ends require soldering to copper pipe, creating a permanent, leak-resistant joint without threaded adapters. The bronze body and brass seat resist corrosion in typical municipal water supplies. No electrical components or software are included, so there are no firmware updates or configuration steps. Buyers who need a threaded or flanged connection, or a valve rated for steam, will need a different model.

Highlights

  • Low-lead bronze body meets safe-water requirements
  • Inline swing mechanism allows 54 gpm flow capacity
  • Sweat connections suit 1 1/4 in copper piping
  • Rated 300 psi at 150 °F for high-pressure systems
  • Operates from -20 °F to 200 °F across seasons

Specifications

BrandMILWAUKEE VALVE
TypeOther

Questions about this item

How do I install the Milwaukee Valve UP1509 sweat check valve, and what step is often missed?

Clean the 1 1/4 inch copper tube ends and valve sockets thoroughly, apply flux, then solder the sweat connections. The step often missed is ensuring the valve is oriented vertically with flow upward so the inline swing mechanism operates correctly.

What maintenance or replacement will the Milwaukee Valve UP1509 need over time?

The bronze body and brass seat resist corrosion, but the bronze seal and swing mechanism can wear after many cycles. Inspect annually for leakage or reduced flow; replace the valve if the seal no longer closes tightly at the 0.750 to 1.000 psi cracking pressure.

What is the first limit reached on the Milwaukee Valve UP1509 under sustained hot-water use?

The maximum temperature rating of 200 degrees F is the first limit. At 150 degrees F the valve handles 300 psi water pressure, but sustained temperatures above 200 degrees F exceed the bronze body and seal design limits.

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