Should I reuse my old Moentrol valve?

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zeek

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I'm re-doing my bathtub and since Moentrol is lifetime warranty I was planning on only replacing the faucet trim. The valve doesn't leak and feels smooth and solid. I would guess the valve is from the 70s or 80s.

What kind of lifetime should be expected out of a Moentrol valve body? I can get to the backside of the valve pretty easy so if I did need to swap it out it could be done without needing to remove tile (although prob a PITA).

moentrol-in-wall.jpg
 
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Terry

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The only moving parts are the balancer and the cartridge.
Nothing has changed over the years on those.

index.php


1 Check Stops Spring-driven gaskets at the valve inlets prevent high-pressure hot water from crossing the valve into a cold supply line or vice versa. (Hot water is at higher pressure in recirculation systems.) Screws in the stops shut off hot and cold lines at the shower for work on the valve cartridge.

2 Pressure-Balancing Spool Hot and cold streams slide a graphite-composite piston in response to fluctuating hot and cold water pressure. In 0.1 seconds, the piston (inside the chrome sleeve) seals or opens inlets to maintain balanced pressure between the two flows, which are still unmixed. Lab tests to monitor internal movement show the piston constantly vibrating back and forth.

3 Cartridge Pulling the shower handle slides the cartridge forward, opening two inlets to let hot and cold water enter and converge. Turning the handle opens one inlet as it closes the other, allowing users to adjust the temperature.

4 Temperature Limit Stop Screwed into the cartridge's rod, this stop prevents a child from fully opening the valve to a scalding-hot setting
 
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rjbphd

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Moentrol is one of the best repairable tub/shower faucet on the market..

moentrol-exploded.jpg
 
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