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3400AB LF Tankless Water Heater Valve Kit

Full Port

Virgin PTFE Seats

Integral Base Drain

Purge Port w/Cap

Integral Relief Valve

RAB: 200K BTU/HR Relief
SAB: 500K BTU/HR Relief
TAB: 2.7M BTU/HR Relief

AB1953, NSF-61 & NSF-372


Spec Sheet


Product Number Type Category Body Connection Class Size
3400AB Tankless Isolation Kit Lead free Low Lead Brass FNPT x Solder 600# WOG 3/4" - 1"
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause birth defects or other reproductive harm. For more information, go to

Additional information



Lead Free