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Discuss Can I replace a sunvicSDM1901 actuated valve with a sunvic SDMV2304 in the USA area at PlumbersForums.net

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The SDM1901 is now almost obsolete. The SDMV2304 looks like a drop in replacement. I have a boiler/storage tank setup with a 3 port divert valve for heating/hot water. There is no room stat as all rads have thermostatic controls.

Is this a safe replacement?
 

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