Accessible to all - Hive Radiator valves also work even if you don’t have Hive active heating, whatever system you have, you can manage your heating via the Hive app. Hive Radiator valves - manage your heating room by room from your smartphone and never waste money heating empty rooms.
eBay
Brass Shower Control Valve Black Chrome Wall Mount Shower Mixer Control Valve Shower Faucet Valve 1-3 Ways
Aliexpress UK
Item model number UK7004240. Installation in an instant - Simply unscrew your existing TRV head and replace it with a Hive Radiator valve. Hive Radiator valves - Manage your heating room by room from your smartphone and never waste money heating empty rooms.
eBay
1-10pcs Pneumatic Check Valve SPC VPC M5 1/8"1/4"3/8"1/2" BSP Thread Air Pipe Quick Check Valve One-way Valve Connector
Aliexpress UK
Item model number UK7004240. Installation in an instant - simply unscrew your existing TRV head and replace it with a Hive Radiator valve. Hive Radiator valves - manage your heating room by room from your smartphone and never waste money heating empty rooms.
eBay
Black White Silicone Duckbill Valve Rubber One-way Check Valve Mini Anti Backflow Valve For Liquid and Gas Backflow Prevent
Aliexpress UK
Accessible to all - Hive Radiator valves also work even if you don’t have Hive active heating, whatever system you have, you can manage your heating via the Hive app. Hive Hub Needed for Alexa - Hive Hub is the essential brains of the operation.
eBay
Stainless Steel double outlet angle valve large flow shower valve control valve, suitable for bathrooms and washing machines
Aliexpress UK
Used works perfectly good it has the M30 adapter on it so ready to go just needs pairing 
eBay
Pvc Ball Valve Controller 3/4"1" Pvc Joint Ball Valve Internal Thread To External Thread Valve Garden Water Supply Switch
Aliexpress UK
Hive Radiator valves - manage your heating room by room from your smartphone and never waste money heating empty rooms.
eBay
Garden Watering Timer Ball Valve /Solenoid Valve Irrigation Controller Home Garden Automatic Watering Electronic Valve
Aliexpress UK
Installation in an instant - simply unscrew your existing TRV head and replace it with a Hive Radiator valve. Hive Radiator valves - manage your heating room by room from your smartphone and never waste money heating empty rooms.
eBay
Toilet Check Valve Male Female Thread One-way Valve 1/2" G1/2 20mm 304 stainless steel Check Valve Durable Hardware Accessories
Aliexpress UK
Hive RA Adaptor for smart radiator with Allen key. New Unwanted accessory.
eBay
Single Faucet Valve Quick Opening Valve Water Tap Copper Iron Faucet Valve Core Faucet Cartridges Kitchen Bathroom Hardware Part
Aliexpress UK