You might also be interested in these thermostatic radiator valve shut off cap.
Excel Home Thermostatic Radiator Valves - Traditional Design 1/2" x 15mm Metal Head Radiator Valves - Westminster Black Nickel
Excel Home
£ 49.99
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2 PCS Heater Adjustment Cap M30x1.5 for Radiator TRV Plastic Decorative Cover in White, Compatible with Thermostatic Valves
Jonikuper
£ 3.94
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Radiator Temperature Control Cap M30x1.5 TRV White Plastic Cover for Thermostatic Valve, Heater Adjustment Cap Compatible with Radiator Thermostat(2PCS)
Valixirant
£ 3.82
free shipping
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TRV Cap White Plastic Heater Adjustment Cap M30X1.5 Radiator Thermostatic Regulating Cover(2PCS)
[PACK OPTIONS] Pack of 2 or 10 heater adjustment sized 34mm (M30 x 5), providing multiple replacement for home, office or property maintenance projects.
£ 3.99
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Heater Adjustment Cap Set of 2, M30 x 1.5 Radiator Thermostatic Valve Cover, White Plastic TRV Replacement Knob for Heating Control, Decorative Radiator(2PCS)
Volakebeing
£ 3.78
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SG Store 5pcs M30X1.5 Thermostatic Radiator Valve Decorators Screw Caps White
SG Store
£ 10.39
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White Plastic Heater Adjustment Cap M30X1. TRV Radiator Thermostatic Regulating Cover for Precise Control and For Installation in Home or Office(2PCS)
Laymotric
£ 3.89
free shipping
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MeevrgR 6-Pack White Radiator Valve Covers, M30x1.5 Thermostatic Valve Cap, Decorative Plastic Adjustment Knob Cover, Easy Snap-On Installation for Heating System
MeevrgR
£ 6.49
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2 10PCS Plastic Heater Adjustment Cap M30X1.5 for Thermostatic Radiator Valve with White Finish and Standard Fit (2PCS)
[BULK OR SMALL PACK OPTIONS] Available in packs of 2 or 10 radiator , these heater adjustment fit M30 x 5 threads to replace multiple valve heads in one purchase.
£ 3.78
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TRV Adjustment Cap for Radiators, M30x1.5 Thread, White Plastic Decorative Thermostatic Regulating Cover, Compatible for Most Heating Thermostats(2PCS)
[MULTI-PACK OPTIONS] Available in packs of 2 or 10 pieces, for homeowners, landlords, or technicians who need multiple radiator for several rooms.
£ 5.37
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Gdfnmogo 1/2 Inch Automatic Air Vent, Auto Bleeding Radiator Valve with Shut-Off Cap, Self-Venting for Home Heating Systems (1-5 pcs)(1pcs)
PACK VARIANTS FOR MAINTENANCE: Available in single or multi-packs of 1/2/3/4/5 pieces so you can stock spares or service multiple radiators at once; designed for 1/2 inch threads on conventional radiator valves
£ 5.61
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ODSUPPLIES - 22mm Brass Air Vent Cap | Also Available in 15mm
ODSUPPLIES
£ 4.94
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Which.One Highlight
Kartell TRV Thermostatic Radiator Valve + Lockshield 1/2" x 15mm White Angled
