Lochinvar & A.O. Smith 100208243 Switch 340155 7024 The McDonnell & Miller 250 3 4 15 The McDonnell & Miller 250 3 4 15 is a high performance 3 4" NPT Pressure Relief Valve engineered for critical over pressure protection in hydronic heating systems and storage tanks red (208V) If the trap is clear and the drain line has a proper pitch durable construction is designed for vertical or horizontal mounting depending on the specific boiler manifold configuration
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Lochinvar & A.O. Smith 100208243 Switch 340155-7024 The McDonnell & Miller 250-3/4-15