Johnson Controls DSC16A-601R Disc & Diaphragm Kit

The Johnson Controls DSC16A-601R Seat Disc and Diaphragm Kit is a specialized field-repair solution engineered specifically for high-capacity V43 Series Pressure-Actuated Water-Regulating Valves. Designed for use in large-scale commercial refrigeration and chiller systems, this kit is essential for maintaining head pressure by regulating water flow through the condenser. When facing symptoms like "hammering" under low loads or internal bypass leakage in pilot-operated valves, replacing these critical internal components is the industry standard for restoring precise throttling performance.

This comprehensive OEM replacement kit is compatible with 2-1/2 inch V43 and V243 series valves. The seat disc (manufactured with durable brass or Monel depending on the valve date code) ensures a positive seal against unwanted water bypass, while the high-flex diaphragm responds accurately to refrigerant pressure changes to modulate water flow. Utilizing genuine Johnson Controls/PENN parts ensures that the valve's original CV ratings and flow characteristics are maintained, preventing system-wide efficiency drops. For technicians servicing systems with non-corrosive refrigerants like R-404A or R-507, this kit provides a complete reconditioning of the valve's pressure-regulating interface.

• Ensures accurate refrigerant head pressure control by restoring factory-spec modulation.
• Compatible with 2-1/2 inch V43/V243 valves used in industrial water-cooled condensers.
• Eliminates internal valve leakage and improper water bypass during cooling cycles.
• Engineered for high-duty cycles common in HVACR pilot-operated water valves.
• Simplifies maintenance by providing all necessary internal repair parts in a single SKU.

• How do I know if I need a seat disc and diaphragm kit or a complete valve replacement? If the valve body is intact but the system fails to maintain head pressure or exhibits constant water flow even when closed, the DSC16A-601R kit is typically the required repair.
• Is this kit compatible with maritime Monel trim valves? Yes, the DSC16A-601R is used with various V43 configurations including those with specialized interior trim for non-corrosive water applications.
• Can this be used on 3-inch or 4-inch V43 valves? No, this kit is specifically sized for 2-1/2 inch valve bodies. Larger sizes require different replacement part numbers.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.