Sinope Sedna Valve 2nd Gen 3/4 in (VA4220ZB)

Quick verdict

A serious automatic water shut-off: a full-port stainless ball valve that joins ZHA or Zigbee2MQTT directly and reports state, position and battery for local leak automations. It is mains-powered (with optional AAA or UPS backup), so site it near an outlet and lean on a nearby mains Zigbee router for mesh reliability. Two caveats before you shop, both current as of August 2026. It is a true inline valve with threaded connections, so unlike the clamp-on actuators it goes into the pipe itself and most people will want a plumber. And Sinope now markets the Zigbee SKU as a secondary valve to its Wi-Fi VA4220WF primary rather than as a standalone product, having retired its US store, so US stock is reseller-dependent. Paired to your own coordinator it still behaves as an ordinary local Zigbee valve; the change is how Sinope sells it, not how it works.

Standout: A full-port stainless motorized water shut-off valve rated to 145 PSI that pairs to any Zigbee coordinator for fully local leak-shutoff - no Sinope hub.

Notes last checked Aug 4, 2026.

Compatibility snapshot

Why it stands out

• Pairs directly to ZHA or Zigbee2MQTT with no Sinope hub or cloud account
• Full-port stainless ball valve rated to 145 PSI with optional battery/UPS backup
• Reports valve state, position and battery to Home Assistant for local leak shutoff

Reasons to hesitate

• Premium price for a single valve
• Mains-powered; needs a separate Zigbee coordinator and ideally a nearby mains router
• No native Apple Home / Alexa / Google on the Zigbee model
• Hard to source in the US: Sinope retired its US store and now lists the Zigbee valve as a secondary valve to its Wi-Fi model, sold out at the vendor

Best for

• Leak-detection setups that need automatic, fully local water shut-off
• Zigbee households avoiding the Neviweb cloud

Avoid if

• You want a clamp-on actuator that grips your existing valve handle without touching the plumbing
• You want a battery-only valve with no wiring
• You expected native voice-assistant support (that's the Wi-Fi model)

Privacy and local-control notes

The Zigbee model pairs to ZHA or Zigbee2MQTT with no Sinope hub or Neviweb cloud. Valve state, position and battery all report locally for leak-shutoff automations.

Home Assistant support: supported · integration path: ZHA or Zigbee2MQTT (local).

Buying reality check

Price notes: Hard to buy in the US as of August 2026. Sinope retired its US storefront, and the Zigbee valve now appears on the Canadian store as the Sedna Secondary Water Valve (VA4220ZB-P01) at $279.99 CAD, listed sold out. Check resellers for the 3/4 in VA4220ZB or the 1 in VA4221ZB. Includes a 5V adapter; AAA or ACUPS-01 battery backup sold separately.

Compare side by side: see valve comparisons →