This Copeland service valve kit includes the necessary seals to maintain vacuum integrity and prevent leaks at the Rotalock connection point

while it ships as power-close

When troubleshooting Weil McLain boiler parts

maintaining consistent pressure response

It is not lead-free rated for drinking water systems

DriSteem 406303-106 Probe Assembly mario This Copeland service valve kitThe DriSteem 406303 106 Probe Assembly is a critical liquid level control component engineered specifically for DriSteem humidifier maintenance and repair. This multi tip probe assembly provides high precision sensing for Vaporstream and STS humidification systems, ensuring accurate water level monitoring to prevent heating element burnout and optimize steam production cycles. As a specialized DriSteem replacement part, the 406303 106 is designed to