Johnson Controls STT17A-617R Repair Kit Freon Does this part include the

Does this part include the set screw for the 1/2-inch shaft

making it a standard requirement for large-scale domestic hot water systems

Optimizes valve response time by replacing fatigued springs and worn core tubes

Optimized Efficiency: 1/30 HP PSC design draws minimal amperage while maintaining high torque for damper and valve actuation

Johnson Controls STT17A-617R Repair Kit Freon Does this part include theThe Johnson Controls STT17A 617R Seat Repair Kit is a critical maintenance component designed for the T 4000 series pneumatic thermostats and specific HVAC control valve assemblies. Engineered for precise pneumatic calibration, this kit addresses common failure points such as seat leakage and inconsistent air pressure regulation. Utilizing high grade elastomers and precision machined internal components, the STT17A 617R ensures optimal pneumatic