GlobalTowne is a Bosch Authorized Distributor of all Bosch gas and electric tankless water heaters. We also carry and sell all the Bosch replacement parts. Bosch is always updating their heaters and parts. Recently the Bosch water valve part number 87070063440 has been changed to 87387101190. This water valve was designed for all the Bosch Compact Heaters.
The water valve part number 87387101190 is good for all Bosch heaters listed below:
Bosch 425HN compact model with serial #686 and later
Please call Globaltowne at 888-726-9752 for further questions or to place an order.