Add an external shut-off valve to the leaking drain valve.

[The Seven]

John Wood Pro hot water tank JW40S34FV-04.

This HW tank uses a plastic drain valve and after several years of draining, it developes leak and is unable to shut-off completely.

Instead of replacing the faulty valve, an external shut-off is added to the faulty valve as shown in the diagram. 

Futuremore the opening of the added shut-off is covered by a valve cap.

 

Edited November 19, 2014 by The Seven

[The Seven]

This gas water heater uses an left hand threaded thermocouple which is out of product in 2006. The thermocouple was found intermitent and having an open-circuit voltage of about 15mV while an good one should have 20-30mV.

If this thermocouple is faulty, an enchancement door kit (58991) is required to replace the faulty thermcouple and the old door.

Edited November 26, 2014 by The Seven

[The Seven]

This gas water heater uses an left hand threaded thermocouple which is out of product in 2006. The thermocouple was found intermitent and having an open-circuit voltage of about 15mV while an good one should have 20-30mV.

If this thermocouple is faulty, an enchancement door kit (58991) is required to replace the faulty thermcouple and the old door.

The door kit is still working good for the water heater.