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Flanged cast iron swing check valve with bronze seat, silver-grey finish

Milwaukee Valve

Milwaukee Valve 2974-M 2 1/2" Flanged Cast Iron Swing Check Valve

SKU CH-8Y47-C9TZF

A 2 1/2" flanged cast-iron swing check valve rated to 200 psi water pressure and 125 psi steam with bronze seat and chrome-cobalt seal

  • Reliable backflow prevention with inline swing mechanism
  • Durable cast iron body rated for 200 psi water pressure
  • Operates from -20 °F to 350 °F for wide temperature range
  • Low cracking pressure of .750 to 1.000 psi for smooth opening
  • Flanged connections suit horizontal or vertical mounting

Milwaukee Valve 2974-M Check Valve

This flanged cast iron swing check valve is built for piping systems that need reliable one-way flow control. The 2-1/2 inch size suits commercial and industrial water or steam lines where back-flow prevention is required.

Suited for horizontal or vertical mounting

Installers who need a valve that operates in either orientation will find this model compatible. Systems demanding cracking pressures outside the .750 to 1.000 psi range or pressures above 200 psi at 150 degrees F should select a different valve.

Rated for 200 psi water and 125 psi steam

The bronze seat and chrome-cobalt seal handle temperatures from -20 to 350 degrees F, giving wide headroom for hot-water and low-pressure steam service. Above 200 psi water pressure or 125 psi steam pressure the valve reaches its limit.

How it compares

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

Price $297.99
Pricier than about 86% of the 1,132 comparable items (median $54.99).

Specifications

Product
Brand nameMILWAUKEE VALVE
Product typeOther

Questions about this item

What flange rating must my existing piping have to mate with this 2974-M valve?

The valve uses a flanged connection; confirm your pipe flanges match the same class and bolt pattern before installation.

Will the bronze seat hold up against the 125 psi steam rating of my older boiler lines?

Yes, the bronze seat is rated for 125 psi WSP, matching the valve's maximum steam pressure specification.

How can I verify the valve opens at the correct cracking pressure after installation?

Apply flow and confirm the disc lifts between .750 and 1.000 psi; the valve should close tightly when flow stops.

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