Johnson Controls STT18A-600R Repair Kit

The Johnson Controls STT18A-600R Seat Repair Kit is a critical maintenance component designed for the V46 Series Pressure Actuated Water Regulating Valves. This kit allows for field restoration of valve integrity without requiring the removal of the entire valve body from the piping system. Engineered for high-pressure HVACR applications, the STT18A-600R features precision-machined internal components that ensure a drip-tight seal and reliable modulation in water-cooled condensers. Technicians utilize this Johnson Controls replacement part to address common bypass leakage and scaling issues within the V46 valve assembly. By replacing the seat and related seals, you restore the precise pressure-to-flow ratio necessary for maintaining optimal head pressure control. This HVAC repair kit is compatible with specific V46 water valves and is rated for standard non-corrosive refrigerant service, providing a cost-effective alternative to full valve replacement while maintaining strict system tolerances.

• Direct OEM Compatibility: Specifically engineered for the Johnson Controls V46 series to ensure exact fitment and pressure ratings.
• In-Line Serviceability: Designed to facilitate internal seat replacement without disturbing brazed or threaded pipe connections.
• Drip-Tight Sealing: Restores the valve's ability to shut off tightly, preventing water waste and maintaining consistent refrigerant head pressure.
• Industrial-Grade Materials: Constructed to withstand the mechanical stress of constant modulation in commercial cooling systems.

Which valve models does the STT18A-600R support?
This kit is primarily used for the V46 pressure actuated valves. Always verify the valve's model suffix and port size against the original equipment manufacturer's specifications to ensure seat compatibility.

Is this kit intended for use with corrosive fluids?
The STT18A-600R is rated for standard water and non-corrosive refrigerant applications. For high-glycol or brackish water systems, consult the technical datasheet to verify elastomer compatibility.

Does this kit include the diaphragm?
This is a seat repair kit focused on the internal flow orifice and seals. If the external pressure bellows or diaphragm is ruptured, a separate power assembly or specific diaphragm kit may be required for a full rebuild.

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.