Waterco 2" Half Union w/O-Ring (634024BLK) relayscontactors but it is the part

but it is the part that protects the motor side from moisture while allowing the shaft to keep turning under load

or no longer holding the sensor properly

This replacement is especially useful when the original venting components are incomplete

or no longer visually presentable

The Raypak 130A complete inlet and outlet header is designed for compatible heater applications where the full water-connection header assembly needs replacement

Waterco 2" Half Union w/O-Ring (634024BLK) relayscontactors but it is the partThe Waterco 2 inch half union with O ring is designed for compatible plumbing systems where one side of the union connection needs to be replaced with the correct serviceable fitting. A half union is useful because it allows plumbing sections to be disconnected more easily during maintenance while still preserving a secure, properly sealed connection during operation. This replacement is especially useful when the original half union is cracked, worn,