Tube 18.4/21.5-16.1 Valve TR218A
48,90 €
Tube 18.4/21.5-16.1 Valve TR218A
48,90 €
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Tube 18.4/21.5-16.1 Valve TR218A
Product.Nr.: 990017167
Manufacturer: Novio
This robust tube 18.4/21.5-16.1 with valve type TR218A is designed for demanding industrial and agricultural applications. It is particularly suitable for high-volume tyres where a large air capacity and reliable pressure retention are required. The tube provides dependable sealing, thereby supporting safe and long-lasting tyre operation on various vehicles and trailers.
Technical data
- Tube size: 18.4/21.5-16.1
- Inch size: 16.1 inch
- Valve type: TR218A
Valve TR218A – properties
The TR218A valve is a special tube valve for high-volume tyres, commonly used on agricultural vehicles, trailers and machines in municipal and industrial applications. It allows convenient inflation, deflation and, where approved by the respective tyre/vehicle manufacturer, use in liquid filling (e.g. water ballasting).
Typical technical characteristics of the TR218A valve type:
- Valve hole diameter: approx. 16 mm (for standardised large valve holes)
- Valve length: medium to long design, providing good access to the valve even with wide rims
- Design: straight, two-piece tube valve with replaceable valve core
- Valve thread: suitable for common filling and testing connections in the agricultural and industrial sectors
- Valve application range: for air filling and – depending on approval – liquid filling, with reliable sealing against pressure loss
Benefits and application range
The 18.4/21.5-16.1 tube with TR218A valve is ideal for large tyres in agriculture, municipal technology and industry. Typical applications include:
- Agricultural trailers and implements
- Municipal and yard equipment
- Industrial trailers and work machines
Thanks to its design matched to the 16.1 inch rim size and the 18.4/21.5-16.1 tube size, an optimal fit inside the tyre is achieved. The robust TR218A valve facilitates maintenance and pressure control, ensures secure sealing and contributes to a long service life of the tube in daily use.
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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