Purpose and characteristics 

The F33 Balance Valve is used in the hydraulic system for lowering a heavy object or limiting speed and locking while hovering in the air, to prevent free fall of the heavy object due to oil tube rupture or brake failure and cause any accident. This valve is also used for luffing in the Changjiang Engineering Crane Series or controlling the telescopic hydraulic cylinder. It also may be used in various types of hoisting and transport machinery, lifting machinery and tower crane.

Model description 

Graphic symbol 

Overall & installation dimensions 

Overall & installation dimensions