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A 2-inch flanged cast iron swing check valve with bronze seat and chrome-cobalt seal

Milwaukee Valve

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

SKU CH-RPK4-NN440

A 2-inch flanged cast-iron swing check valve rated for 200 psi water pressure at 150 °F and 125 psi steam, with a bronze seat and chrome-cobalt seal operating from -20 °F to 350 °F

  • Size2"
  • TypeOther
  • Prevents backflow with inline swing mechanism
  • Cast iron body rated for 200 psi water pressure
  • Operates from -20°F to 350°F temperature range
  • Bronze seat with chrome-cobalt seal ensures tight closure
  • Horizontal or vertical mounting orientation supported

Application and Purpose

This 2 inch flanged cast iron swing check valve suits plumbing and industrial piping where automatic backflow prevention is required. It installs horizontally or vertically in water or steam lines. Buyers who need a smaller nominal size or a different connection type cannot use this valve.

Capacity and Headroom

The valve handles water pressure up to 200 psi at 150 degrees F and steam pressure up to 125 psi WSP across a temperature range of minus 20 to 350 degrees F. It opens with a cracking pressure between .750 and 1.000 psi. Systems that exceed these pressure or temperature limits will exceed the valve’s rated capacity.

Deciding Specification

The connection type is flange by flange with a 2 inch pipe size and a cast iron body with bronze seat and chrome cobalt seal. If the piping uses threaded, soldered or other end connections, this valve will not fit.

Highlights

  • Prevents backflow with inline swing mechanism
  • Cast iron body rated for 200 psi water pressure
  • Operates from -20°F to 350°F temperature range
  • Bronze seat with chrome-cobalt seal ensures tight closure
  • Horizontal or vertical mounting orientation supported

Specifications

BrandMILWAUKEE VALVE
Size2"
TypeOther

Questions about this item

Will the 2" flanged connections on this swing check valve match the bolt pattern of my existing 2" cast iron pipe flanges?

Yes, the valve uses standard 2" flange x flange connections designed to bolt directly to matching 2" pipe flanges in your current system.

How can I confirm the valve is sealing properly after installation?

Pressurize the line up to 200 psi at 150 Degrees F; the bronze seat and chrome-cobalt seal should hold with zero back-flow and the cracking pressure will stay between .750 and 1.000 psi.

Does the 2974-M come with flange gaskets and bolts, or must I purchase them separately?

Only the cast iron swing check valve body is included; flange gaskets and bolts for the 2" flanged connections are not supplied and must be bought separately.

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