MEASUREMAN MD105 Tankless Isolation Valve Kit: isolation valve kit

What it delivers

The MEASUREMAN MD105 Tankless Isolation Valve Kit is a pair of tankless service valves for flushing and isolating the heater; its listing says it fits most 1" gas/electric tankless water heaters.

Service valves let you shut off the heater and open hose ports on the hot and cold lines, so a flush takes minutes instead of cutting pipes.

Before ordering, check the heater's fitting size and whether you want threaded, sweat or push-fit connections; the hot-side valve usually takes the pressure relief valve.

Also on the listing: material: Brass; model: MD105; warranty: 1 year; fits: most 1" gas/electric tankless water heaters.

The listing gives dimensions of 8 x 8 x 3 inches, a weight of 3.64 lb and valve in the box.

Warranty, per the listing: 1 year.

Right unit for this house?

Install it when

New tankless installs
Owners who flush their own heater

Look at another unit when

Heaters whose manual calls for a different method

Strengths and trade-offs

Strengths

Isolation valve kit
Names most 1" gas/electric tankless water heat

Trade-offs

Match it to your heater's fittings

Install limits

Figures are the maker's or seller's own. Flow at a rise is our estimate from the input; gas, venting and electrical work needs a licensed professional.

Rated performance

Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.

Model number	MD105	Retailer
Product weight	3.64 lb	Retailer
Dimensions (seller)	8 x 8 x 3 inches	Retailer
Material	Brass	Retailer
Warranty	1 year	Retailer
Fits	most 1" gas/electric tankless water heaters	Retailer