MUELLER STEAM SPECIALTY 4 71AHB3H 4" Cast Iron Wafer Double Disc Check Valve

This Mueller Steam Specialty 4 in cast iron wafer double disc check valve is a non-return valve for process piping. It is intended for single-direction flow and is configured to close when flow reverses. The valve features an inline wafer body design compatible with ANSI flanges, a double disc check mechanism, Buna-N seal and seat materials, and a 316 stainless steel spring. Mounting orientation: horizontal or vertical, including vertical up flow.

Key Features:

• 4 in nominal valve and pipe size
• Cast iron body and cast iron check mechanism
• Flanged wafer x flanged wafer connection; compatible with ANSI flanges
• ANSI Flange Class: Class 125
• Double disc check mechanism with single flow design
• Maximum operating pressure: 200 psi
• Maximum water pressure: 200 psi at 150 degrees F
• Maximum pressure rating: 200 psi at -20 degrees F to 150 degrees F; 150 psi at 353 degrees F
• Operating temperature range: -20 degrees F to 100 degrees F
• Seal and seat material: Buna-N
• Spring material: 316 stainless steel
• Mounting orientation: horizontal, vertical, including vertical up flow
• Overall dimensions: 6 7/8 in L x 2 1/2 in W x 6 7/8 in H
• Standards: ANSI, API, FM, UL

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