Wabco 4721321987 3/2 Way Solenoid Valve

Description

The Wabco 4721321987 is a 3/2 way solenoid valve, a critical component in air brake systems. This valve is used to control the flow of compressed air within the braking circuit, enabling efficient and reliable brake operation in commercial vehicles. Constructed to OE specification, this vented solenoid valve features a bayonet electrical connection and operates effectively within a temperature range of -40°C to +80°C, supporting a maximum operating pressure of 10.0 bar. Its dimensions are 40 x 55 x 112 mm and it features M12 x 1.5 port threads for both inlet and outlet. The IP 66 protection class ensures durability in demanding environments, and the valve offers a calculated volume of 0.2464 with a 2.2mm multi nominal diameter.

Key Features & Benefits

Basically, this valve controls airflow in your air brake system. The “3/2 way” part just tells you how it controls it. It has three ports – one for pressure in, one for pressure out, and one that vents to the atmosphere. It switches between two positions – either allowing air to flow between the inlet and outlet, or blocking the flow and venting the pressure. It’s electrically operated, so when it gets a signal from the system, it either opens or closes that airflow. You’ll find these used in a lot of different parts of an air brake system. Things like controlling the operation of air brakes themselves, the parking brake, even the air suspension on some vehicles. It’s a pretty common component for directing air where it needs to go to activate those systems. Think of it like a gatekeeper for the air.

Symptoms, Risks & Replacements

Well, if this valve fails, whatever system it controls won't work right. You'll notice if it's related to your brakes – you might have trouble applying the parking brake, or even have issues with your service brakes holding properly. It’s a safety – critical part, because it directly impacts how well your vehicle can stop. It acts like a shield, preventing air from going where it shouldn't, and letting it through when it needs to. We carry a good selection of these, and you can often find a great price on a replacement at Fixparts Online if you’re looking. It's definitely something you want to keep in good working order.

Warranty Information

Wabco 3/2 Way Solenoid Valve (MPN 4721321987) comes with a 1-year warranty.