Tesla 3/4" Expansion Vessel Service Valve (Saves You time and Money When Servicing or Replacing a Vessel!)

Allows the vessel to be isolated and drained for essential periodic servicing and re-charging. Shut-off and drain, for membrane expansion vessels in sealed heating and cooling systems. Protected shut / open facility against inadvertent closing. Brass, Steel & Plastic - Manufacturers part number: 442FJ

• Protected shut/open facility against inadvertent closing
• Shut off and drain, for membrane expansion vessels in sealed heating and cooling systems
• Allows the vessel to be isolated and drained for essential periodic servicing and re-charging
• No need to add inhibitor back into the system
• Isolate without having to drain down the whole system