Johnson Controls STT16A-601R Seat Repair Kit

The Johnson Controls STT16A-601R Seat Repair Kit is a critical maintenance component designed for servicing 3/4-inch commercial water regulating valves. This field-serviceable kit allows technicians to rebuild the internal seating surfaces of Johnson Controls V46 series valves, specifically targeting the V46A and V46D models, as well as V47A and V47N pressure-actuated water valves. By replacing worn internal components, this HVAC repair kit restores the valve's tight shut-off capabilities and prevents refrigerant head pressure drift caused by leaking or fouled seats. Manufactured to original OEM specifications, the STT16A-601R ensures proper seat alignment and flow modulation within high-demand cooling systems. Utilizing this pressure-actuated valve kit is a cost-effective alternative to full valve replacement, minimizing system downtime and preserving the calibrated setpoints of existing commercial condensers.

• Restores positive shut-off performance in 3/4" NPT water regulating valves.
• Compatible with high-pressure V46 and V47 series applications.
• Provides OEM-grade materials to resist mineral buildup and erosion.
• Maintains precise head pressure control by eliminating seat bypass.
• Reduces labor time compared to unbrazing and replacing the entire valve body.

How do I know if my V46 valve requires a seat repair kit?
If the water continues to flow through the condenser after the compressor cycles off, or if head pressure becomes difficult to stabilize, the internal seat is likely pitted or worn, necessitating an STT16A-601R installation.

Is the STT16A-601R compatible with all V46 models?
This specific kit is engineered for 3/4-inch commercial valves. Always verify the port size and series prefix (V46A, V46D, V47A, V47N) on the valve nameplate before attempting service.

Does this kit include the diaphragm?
The STT16A-601R focuses on the seat assembly; if the valve is leaking externally or failing to actuate, the diaphragm or bellows assembly may require separate inspection.

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.