Air Vent 1/4″
£1.08 inc VAT (£0.90 ex VAT)
✓ In Stock
Free Click and Collect, no minimum order, from our Glasgow counter at 555 South Street, G14 0QX. Open Mon-Fri 8am-5pm, Sat-Sun 8am-1pm.
Delivery: free UK mainland delivery on orders over £250, or £12 + VAT under £250. In stock orders placed by 2pm Monday to Friday usually go out for next working day delivery. Returns: 14 days. Call 0141 404 5128 for a return number first. Delivery and Returns
Trade and public welcome at 555 South Street, Glasgow G14 0QX. Call 0141 404 5128.
A small 1/4″ air vent for releasing trapped air from a radiator or heating fitting with a 1/4″ tapping. A useful spare for bleeding rads that need the smaller thread. Sold by Plumb Parts in Glasgow.
This small air vent has a 1/4″ thread for radiators and fittings that use the smaller tapping. It lets out air that collects at high points so the heating can run quietly and evenly.
When you need a 1/4″ air vent
Some radiators and fittings take a 1/4″ vent rather than the more common 1/2″. If the old vent is snapped or seized, measure it or bring it to the counter so the new one matches.
Isolate the radiator or drain the section of pipework before removing the old vent. Clean the thread, wrap the new vent with PTFE, and screw it in snug. Do not overtighten, since small threads strip easily. A smear of jointing paste on top of the tape helps on an old, worn fitting.
Refill, then bleed the air until water appears. Keep a cloth under the vent, because the first spurt is often dirty. If the system is sealed, top it back up to the right pressure on the gauge.
More vents and radiator spares are in our Flexible range.
Small vents in Glasgow
Visit Plumb Parts, 555 South Street, Glasgow G14 0QX for the trade counter, open Mon-Fri 8am-5pm and Sat-Sun 8am-1pm. The website takes orders too.
Specification
- Sizes: 1/4″ thread
- Suitable for: Radiators and fittings with a 1/4″ vent tapping
Common Questions
Is a 1/4″ vent easy to tell apart from a 1/2″ one?
The 1/4″ is noticeably smaller across the thread. If you are unsure, bring the old vent in so it can be matched.
Should I use PTFE on such a small thread?
A few wraps of PTFE tape help it seal. Tighten gently, because small threads strip easily if you lean on them.
What do I do after fitting the new vent?
Refill or reopen the valves, then bleed until clean water appears. On a sealed system, bring the pressure back up on the gauge.
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