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The Viessmann 7134738 1-1/4" 4-Way Mix Valve is designed for use on boilers. This hydronic mixing valve features a 4-way configuration and NPT connection. It has a nominal size of 1-1/4 inches and a temperature rating of 248 deg F.
The Viessmann 7134738 mixing valve is a 1-1/4" 4-way valve for boilers.
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