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Cast iron wafer double disc check valve, silver-grey industrial finish

Mueller Steam Specialty

Mueller Steam Specialty 21/2 71AHB3H 2-1/2" Cast Iron Wafer Double Disc Check Valve

SKU CH-17F5-43VHS

A 2-1/2 inch cast iron wafer double disc check valve with Buna-N seals and 316 stainless steel spring, rated for 200 psi at 150 degrees F

  • TypeOther
  • Reliable backflow prevention with double-disc wafer design
  • Durable cast iron body handles 200 psi water pressure
  • Buna-N seals perform up to 100°F temperature limit
  • 316 stainless steel spring resists corrosion in process piping
  • Installs horizontally or vertically for flexible mounting

Application Fit

This 2-1/2 inch cast iron wafer check valve installs between flanged wafer connections in horizontal or vertical runs. The inline wafer body keeps the profile narrow so it fits tight process piping layouts without extra spread. Buna-N seals and a 316 stainless steel spring handle the sealing and return force so the surrounding pipework does not need additional spring supports.

Sustained Operation

Rated for 200 psi water pressure at 150 degrees F and a maximum temperature of 100 degrees F, the valve maintains seal integrity during continuous process flow. The Buna-N seat and 316 stainless spring resist creep and corrosion over long cycles, while the cast iron body withstands steady hydraulic loads without deformation. Not rated for steam service.

Highlights

  • Reliable backflow prevention with double-disc wafer design
  • Durable cast iron body handles 200 psi water pressure
  • Buna-N seals perform up to 100°F temperature limit
  • 316 stainless steel spring resists corrosion in process piping
  • Installs horizontally or vertically for flexible mounting

Specifications

BrandMUELLER STEAM SPECIALTY
TypeOther

Questions about this item

What is the maximum water pressure the 2-1/2" cast iron wafer check valve can handle at 150 degrees F?

The valve is rated for 200 psi at 150 degrees F, so sustained operation above that pressure is the first limit you will reach.

How much heat does the Buna-N seal and 316 stainless steel spring generate during continuous flow?

The valve body is rated to 100 degrees F; it adds no heat of its own, so temperature rise comes only from the fluid passing through.

Which flange standard matches the flanged wafer connections on this Mueller check valve?

The wafer body fits between standard 2-1/2 inch flanges; you need matching companion flanges, bolts and gaskets to complete the installation.

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