Tube 9x3.50-4 DIN 7777
4,90 €
Tube 9x3.50-4 DIN 7777
4,90 €
Shipping price from: 6,90 €
Product Product in stock
Tube 9x3.50-4 DIN 7777
Product.Nr.: 990017420
Manufacturer: KINGS TIRE
This high-quality 9x3.50-4 tube from KINGS TIRE is designed for use in industrial and garden applications and offers reliable air tightness and a long service life. It is ideal for small transport equipment, hand trucks, garden machinery, sweepers, sack trucks and similar applications where robust and durable tubes are required. The 9x3.50-4 size fits corresponding tyre and rim sizes, while the standardized DIN 7777 valve allows safe and easy inflation.
Technical data
- Product name: Tube 9x3.50-4 DIN 7777
- Brand: KINGS TIRE
- Tube size: 9x3.50-4
- Inch size: 4 inch
- Valve type: DIN 7777
Valve type DIN 7777 – details
The DIN 7777 valve is a classic straight tube valve that is widely used on small industrial and garden vehicles. It is characterized by a robust metal design and high tightness.
Typical technical features of a DIN 7777 valve:
- Design: Straight valve, led directly out of the tube
- Valve hole drilling: Designed for standardized small valve holes on suitable rims (typically approx. 8–11 mm, depending on rim design)
- Valve length: Medium size for good accessibility when inflating and checking air pressure
- Valve material: Usually metal valve with rubber base for secure sealing in the tube
- Closure: Standard screw cap, protects the valve core from dirt and damage
- Operating pressure: Designed for the operating pressures typical for this tube size in industrial and garden use
Benefits and application range
The 9x3.50-4 DIN 7777 tube is a reliable solution for smaller wheels in industrial and garden applications. Thanks to its precisely matched size, it is suitable for tyres with the dimension 9x3.50-4 and ensures even pressure distribution and good riding comfort on a wide variety of surfaces.
Thanks to the standardized DIN 7777 valve, the tube is compatible with common rims and inflation devices. This facilitates maintenance and service, especially in professional use. Whether on hand trucks, garden machinery, sweeping equipment or other transport aids – this tube offers a robust, durable and economical solution for 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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