Tube 20.8-34 Valve TR218A
151,90 €
Tube 20.8-34 Valve TR218A
151,90 €
Shipping price from: 6,90 €
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Tube 20.8-34 Valve TR218A
Product.Nr.: 990017201
Manufacturer: Novio
This tube in size 20.8-34 is designed for use in large agricultural and industrial tyres. It offers reliable air tightness and is engineered for high loads and varying operating conditions. The robust material and the heavy-duty TR218A valve make it the right choice for tractors, harvesters, work machines and other vehicles with large-dimension tyres.
Technical data
- Tube size: 20.8-34
- Inch size: 34 inch
- Valve type: TR218A
Valve-specific data (TR218A)
- Valve design: Heavy-duty tube valve for agricultural and industrial tyres
- Valve configuration: Straight metal valve with replaceable valve core
- Typical valve hole drilling: approx. 20.5 mm (0.805") for the rim hole
- Valve length above rim base: approx. 38–45 mm (may vary slightly depending on manufacturer)
- Seal: External seal with locknut for secure fixing in the rim hole
- Suitable pressure ranges: Designed for high operating pressures in agricultural and industrial tyres
- Filling: Suitable for air filling, usually also for water filling (e.g. ballast), if approved by the manufacturer
Benefits and application range
This 20.8-34 tube with TR218A valve is ideal for high-volume tyres in agricultural and industrial applications. It is particularly suitable for tractors, field sprayers, combine harvesters, trailers and other work equipment that depend on reliable air stability and high load capacity.
The robust TR218A valve ensures secure fastening in the rim and allows convenient inflation and deflation, even at high pressures and under harsh operating conditions. Thanks to the standardised valve hole drilling, the tube is compatible with many common rims. Overall, this tube offers a durable, low-maintenance solution for professional applications in agriculture, municipal technology and industry.
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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