Tube 12.5/80-20 Valve TR218A
36,90 €
Tube 12.5/80-20 Valve TR218A
36,90 €
Shipping price from: 6,90 €
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Product Produkt lagernd
Tube 12.5/80-20 Valve TR218A
Product.Nr.: 990017067
Manufacturer: Novio
This 12.5/80-20 tube with TR218A valve is designed for demanding industrial and garden applications. It is ideal for tyres in this size and provides reliable sealing and stable air pressure retention. Thanks to its robust construction, the tube is particularly suitable for vehicles and machinery that are frequently used on uneven ground or in continuous operation. In addition, the tube is compatible with several tyre sizes, offering high flexibility in use.
Technical data
- Tube size: 12.5/80-20
- Rim size: 20 inch
- also suitable for: 335/80-20, 355/80-20
- Valve type: TR218A
Valve TR218A – Properties
The TR218A valve is specifically designed for tube-type tyres in industrial and agricultural applications. It allows convenient inflation and deflation of the tyre and is designed for higher loads.
Typical characteristics of valve type TR218A:
- Valve hole diameter: approx. 20.5 mm (0.81")
- Valve length: usually approx. 38–45 mm above rim surface
- Design: Straight, two-piece metal valve with replaceable valve core
- Fixing: With locknut for secure fastening in the rim
- Application: Designed for tube-type tyres in agriculture, industry and heavy-duty garden machinery
Benefits and application
This tube is a reliable solution for tyres in size 12.5/80-20 as well as for the compatible sizes 335/80-20 and 355/80-20. It is particularly suitable for:
- Municipal and industrial machinery
- Agricultural and forestry equipment
- Heavy garden and yard machinery
Thanks to the robust TR218A valve, the tube is designed for higher loads and frequent pressure adjustments. Users benefit from:
- High dimensional accuracy for the specified tyre sizes
- Secure valve seating in the rim thanks to large valve hole and nut fastening
- Reliable sealing and long service life in daily operation
This makes the tube a solid choice for professional users who value durable and robust components.
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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