Isolation valve kit · VEVOR

VEVOR HPSF03A Tankless Isolation Valve Kit

Isolation valve kit

Isolation valve kitFits Most Tankless Waters Heaters3/4-inch connections

Updated October 2026

The short answer

A solid isolation valve kit for new tankless installs.

Delivers
Isolation valve kit.
Watch for
Match it to your heater's fittings.
Suits
New tankless installs.
Connections
3/4-inch connections
Fits
Most Tankless Waters Heaters
Material
Lead-Free Brass
Product weight
2.9 lb
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What it delivers

The VEVOR HPSF03A Tankless Isolation Valve Kit is a pair of tankless service valves for flushing and isolating the heater; its listing says it fits Most Tankless Waters 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.

Match the connection type (threaded IPS, sweat or push-fit) and size, usually 3/4 inch, to the heater and the pipe; most kits put the relief valve port on the hot side.

From the listing: connections: 3/4-inch connections; material: Lead-Free Brass; model: HPSF03A; fits: Most Tankless Waters Heaters.

The listing gives a weight of 2.9 lb.

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 Tankless Waters Heaters

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 numberHPSF03ARetailer
Features (seller)Premium Materials, Easy Installation, Pressure Relief Valve, Heat & Pressure ResistanceRetailer
MaterialLead-Free BrassRetailer
Product weight2.9 lbRetailer
Connections3/4-inch connectionsRetailer
FitsMost Tankless Waters HeatersRetailer

Rival units at this flow

More descaling and maintenance kits rated for similar demand

Full descaling and maintenance kits spec grid · Every VEVOR unit in the catalog

Final verdict

A solid isolation valve kit for new tankless installs.

Buy this unit

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Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions buyers ask

What pipe does the VEVOR HPSF03A Tankless Isolation Valve Kit connect to?
See the connection type and size on the listing (3/4-inch connections); match it to the heater's fittings and your pipe before ordering.