Tube 18.4-50 TR218A suitable for 480/80 R50
147,91 €
Tube 18.4-50 TR218A suitable for 480/80 R50
147,91 €
Shipping price from: 6,90 €
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Product Produkt på lager
Tube 18.4-50 TR218A suitable for 480/80 R50
Product.Nr.: 990017159
Manufacturer: Novio
This robust inner tube in size 18.4-50 is designed for use in large-dimension agricultural, industrial and municipal tyres. It offers reliable air tightness and is therefore ideal for applications where high load capacity and stable tyre pressure are required. Thanks to its compatibility with tyre size 480/80 R50, the tube is suitable for a wide range of modern tractors, work machines and special-purpose vehicles.
Technical data
- Tube size: 18.4-50
- Inch size: 50 inch
- Also suitable for: 480/80 R50
- Valve type: TR218A
Valve type TR218A – details:
- Design: Straight, heavy-duty valve for large tyres (agricultural and industrial tyres)
- Typical valve hole drilling: approx. 20.5 mm (0.805") for large-dimension rim valve holes
- Valve length (above rim contour): usually in the range of approx. 45–60 mm, for good accessibility when inflating and checking
- Version: Metal valve with replaceable valve core, suitable for high inflation pressures
- Fixing: Screwed into the rim hole with seal and locknut for a secure, pressure-tight fit
- Medium: Air, suitable for standard air pressures in agricultural and industrial applications
Benefits and applications
The 18.4-50 tube with TR218A valve is specially designed for heavy-duty use in agricultural and industrial environments. It offers high pressure stability, supporting reliable operation of tractors, harvesters, yard loaders and other work machines. The robust TR218A valve ensures safe inflation and a permanently tight fit in the rim, even under high loads and changing operating conditions.
Thanks to its precise fit for 18.4-50 and 480/80 R50 tyres, this tube is ideal for users who value reliability, easy maintenance and long service life of their tyres – for example in agriculture, municipal technology, landscaping and various industrial applications.
Frequently asked questions about this product
The valve designation describes two things: the stem diameter — which must fit the hole in the rim — and the shape, i.e. straight or angled.
Only the bore matters for a proper fit: a valve fits perfectly only if its stem matches the bore in the rim. Whether it is straight or angled makes no difference — that is a question of accessibility.
An overview of the types:
| Type | Shape | Bore | typically used for |
|---|---|---|---|
| TR13 | straight, rubber | 11.5 mm | Car and trailer wheels |
| TR4 / TR6 | straight, short | 11.5 mm | Small wheels, garden tools |
| TR15 | straight, rubber | 16 mm | Agricultural machinery, tractor rims |
| TR87 | 90° angled | 11.5 mm | Small wheels, solid rims |
| JS8 (DIN 7777) | 90° angled, same as TR87 | 11.5 mm | small wheels, solid rims |
| JS2 | Approx. 70° angled | 11.5 mm | Industrial and small wheels |
| V3-02-7 (TR75) | 100° single-bend metal angle valve with screw-on base | 12.2 mm | Commercial vehicles, lorries, trailers, agricultural and industrial machinery such as forklift trucks |
| V3-06-3 | Triple-bend brass truck screw-on valve (90°/139°/139°) | 9.7 mm | 20-inch truck and trailer tubes (6.00-20 to 9.00-20), also 22.5-inch tube-type tyres |
| TR218A | Straight metal air-water valve, two-piece | 15.9–16 mm | High-volume tubular tyres for agricultural and industrial use, tractors |
V3-02-7 in detail: Also known as ETRTO V3.02.7 and US designation TR75. Dimensions: Horizontal leg length 22.5 mm, vertical leg length 71.5 mm, total height approx. 91 mm. The valve base is screwed on, not pressed in — this makes it significantly more robust than a rubber valve.
V3-06-3 in detail: Also known as ETRTO V3.06.3. Triple-bend brass screw-on truck valve: the first bend is 90°, the other two 139° each — this guides the filling end past the rim flange and keeps it accessible even with twin tyres and deep rim wells. Leg dimensions approx. 20.5 / 46 / 20.5 / 47.5 mm (approx. 135 mm developed length), rim hole 9.7 mm. The valve is fastened to the tube with a sealing washer and nut instead of being vulcanised in. In our range on the 20-inch tubes 6.00/6.50-20, 7.00/7.50-20, 8.25-20 and 9.00-20.
TR218A in detail — the valve for water ballast: What makes this type special is the option for liquid ballasting: the hose is partially filled with water to increase the vehicle’s weight and thus improve traction — a common practice with tractors.
- Design: straight, robust metal valve, usually in two parts. Unscrewing the inner CH3 valve insert creates an extra-large opening — allowing for quick filling with air or liquid.
- Rim bore: 15.9 to 16 mm (0.625 inches).
- Length: typically around 38 to 48 mm total height above the rim.
- Mounting: a rubber base approximately 80 mm in diameter for vulcanising onto the inner tube, plus a lock nut for secure attachment to the rim.
Reducing sleeves: A TR15 valve does not fit into an 11.5 mm bore. Conversely, there are sleeves that allow a TR13 valve to fit into a 16 mm bore.
Whether straight or angled is not a question of fit, but of accessibility: with closed rims or small wheels, it is often impossible to reach the valve with a pump using a straight valve — in which case an angled one is used.
Not sure which valve is fitted? A photo of the old valve is all we need to identify it. Choose from: inner tubes, bead tapes and valves.
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Produkt på lager
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449,91 € -10 % RRP 499,90 €
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Cheapest price in the last 30 days: 499,90 €
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