Hydraulic brake componentsOBV*/HXQ*

The OBV-25 power‑brake valve and the HXQ accumulator are used in the braking systems of 5–10‑ton forklifts. With the engine running, depressing the power‑brake valve with the foot activates both the forklift’s brakes and refills the accumulator. When the engine is off, pressing the valve again uses the pressurized fluid stored in the accumulator to actuate the brakes, bringing the forklift to a stop. The brake valve is operated by foot pressure, with pedal force linearly proportional to the output pressure, providing a comfortable pedal feel. The accumulator is equipped with an alarm switch connected to an indicator; when the pressure falls below the set threshold, the alarm sounds, prompting the operator to replenish the accumulator and ensuring it maintains sufficient pressurized fluid for reliable braking. The combination of the OBV‑E25L power‑brake valve and the HXQ accumulator effectively meets the braking requirements of forklifts under three operating conditions—traveling, parking, and emergency stopping—while delivering dependable performance. This system is widely employed in hydraulic braking systems for forklifts and other construction machinery. When used in conjunction with the E45E5‑40211 safety valve, the brake ensures that, during unloading, hydraulic fluid does not fully return to the reservoir, enabling rapid re‑filling and more reliable braking on subsequent applications.

Shared hydraulic system: The power‑brake valve shares the steering system’s hydraulic fluid source, supplying fluid to the accumulator and actuating the brake valve. When the engine is shut off, the power brakes rely on the pressurized fluid stored in the accumulator to provide braking.

Overload relief: The accumulator is equipped with a built-in relief valve that automatically relieves pressure when the set pressure is exceeded.

Undervoltage Alarm: The accumulator is equipped with a built-in alarm that activates when the accumulator pressure falls below the set threshold, alerting the operator to replenish the accumulator with fluid.

Comprehensive functionality: The combination of a power‑brake valve and an accumulator effectively meets the forklift’s braking requirements under three operating conditions—travel, parking, and emergency stop. Comfortable pedal feel: Pedal force is linearly proportional to the brake valve’s output pressure, delivering a light and comfortable foot‑operated response.

Unloading safety valve: When used in conjunction with the E45E5-40211 safety valve, it allows the brake to release hydraulic fluid during unloading.

It will not fully return, ensuring rapid fluid replenishment during the next braking application and more reliable braking.