Chassis Parts

OnSpot Pressure Protection Valve


Onspot Tire Chains has built a reputation for providing high-quality, durable, and reliable traction solutions. The company’s commitment to innovation, safety, and customer satisfaction has helped it to become a leading provider of automatic tire chain systems globally.

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OnSpot Pressure Protection Valve

The OnSpot Pressure Protection Valve is a key component used in the air supply system for Onspot automatic tire chains. The primary function of the PPV is to ensure that the vehicle’s air brake system maintains adequate air pressure even when the Onspot system is in use.

The Onspot system typically utilizes the vehicle’s existing compressed air supply, which is also used for the air brake system. Since air brakes are critical for the safe operation of the vehicle, it is essential to make sure that activating the Onspot chains does not compromise the air pressure needed for braking.

The Pressure Protection Valve works by allowing air to flow to the Onspot system only when the air pressure in the main air reservoir is above a certain threshold, typically around 70-80 psi (4.8-5.5 bar). If the air pressure drops below this level, the PPV automatically cuts off the air supply to the Onspot system, ensuring that the air brakes maintain their priority for available air pressure.

By installing a Pressure Protection Valve in the air supply line for the Onspot chains, operators can have confidence that their tire chain system will not interfere with the vehicle’s braking capabilities. This is particularly important for heavy vehicles like trucks and buses, where the proper functioning of the air brake system is crucial for safety.

Onspot Tire Chains is a company that specializes in manufacturing and supplying automatic tire chain systems, specifically designed for a range of commercial vehicles, including trucks, buses, and emergency vehicles. The company’s innovative traction solutions are aimed at improving safety and efficiency during harsh winter conditions.

Founded in the 1970s in Sweden by engineer and inventor Bengt Nilsson, Onspot has since become a globally recognized brand with a strong presence in North America, Europe, and other regions. The idea behind Onspot’s automatic tire chains originated when Nilsson observed the need for a more efficient and convenient way to provide traction on slippery surfaces, compared to the traditional, manually installed tire chains.

Onspot’s automatic tire chain system is designed to be mounted on the vehicle’s suspension, with the chain assembly located just behind the tire. When the driver encounters icy or snowy conditions, the system can be activated from inside the vehicle by a simple flip of a switch. The chain plates, which hold the chains, then swing out and engage with the tire, providing additional grip and stability.

The primary advantage of Onspot tire chains is the convenience and speed of their deployment. Traditional tire chains can be time-consuming and labor-intensive to install, whereas the Onspot system allows drivers to engage and disengage the chains on the go, without having to stop or exit the vehicle.

Additional Information

Weight 1 lbs


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