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519600A | Differential Bypass 1"NPT | Caleffi Used on_Series 750B Remote Mount Control Modules Its M10 threaded stud provides**Differential Bypass Valve 1"NPT (SKU: 519600A)** Caleffi's Differential Bypass Valve is designed to maintain a constant differential pressure across a control valve. This ensures accurate control of flow and protects downstream components from excessive pressure. Constructed with durable brass and stainless steel, it features 1" NPT connections for easy installation. Key Features: * Maintains stable differential pressure * Protects downstream