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Three-inch flanged cast iron swing check valve, grey industrial finish

Milwaukee Valve

Milwaukee Valve 2974-M 3 inch flanged cast iron swing check valve

SKU CH-M7S4-M83M7

3-inch flanged cast iron swing check valve rated for 200 psi water pressure at 150°F and 125 psi steam, operating from -20°F to 350°F with a .750 to 1.000 psi cracking pressure

  • Reliable flow control with inline swing mechanism
  • Durable cast iron body resists corrosion and wear
  • Operates from -20 °F to 350 °F for wide temperature range
  • Handles up to 200 psi water pressure at 150 °F
  • Low cracking pressure of .750 to 1.000 psi ensures easy opening

3-inch flanged cast iron swing check valve

This Milwaukee Valve 2974-M is a 3-inch flanged cast iron swing check valve designed for inline installation in piping systems. It suits commercial, industrial and municipal applications where reliable back-flow prevention is required.

Sustained load behaviour

The valve handles maximum water pressure of 200 psi at 150 degrees F and maximum steam pressure of 125 psi WSP. It operates continuously between -20 degrees F and 350 degrees F with a cracking pressure of .750 to 1.000 psi in both horizontal and vertical orientations.

Replaces or upgrades

This unit replaces worn or undersized swing check valves in existing flanged cast iron piping where a bronze seat and chrome-cobalt seal are specified. The jump is worth it when the system demands the stated pressure and temperature ratings.

How it compares

Measured against everything we stock in Faucet Valves & Replacement Parts, at today’s prices. Recalculated every night.

Price $323.99
Pricier than about 88% of the 1,132 comparable items (median $54.99).

Specifications

Product
Brand nameMILWAUKEE VALVE
Product typeOther

Questions about this item

How much heat can the 2974-M handle before the cast iron body or bronze seat are affected?

The valve is rated for a maximum temperature of 350 degrees F and a minimum of -20 degrees F, with a maximum water pressure of 200 psi at 150 degrees F.

What piping does the 2974-M need to connect to a 3-inch flanged system?

It uses a flange-by-flange connection for a 3-inch pipe size, so matching 3-inch flanges and gaskets are required for installation.

Will the 2974-M seal reliably in a low-pressure gravity feed line?

The cracking pressure ranges from .750 to 1.000 psi, so it will open with very little head pressure in a gravity system.

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