Hose Burst Valves or Velocity Fuses are used to prevent the uncontrolled descent of a load in the event of a hose failure. Hydraulic hose rupture valves are crucial safety devices utilized in hydraulic systems to prevent uncontrolled release of pressurized fluid in the event of hose failure or rupture. They should be screwed directly into the lifting device (normally a cylinder), or into an in-line manifold that should be mounted as close as possible to the lifting device. Hydraulic hose rupture valves automatically detect a sudden drop in hydraulic pressure and quickly close off the flow, minimizing the risk of injury, damage to equipment, and potential environmental hazards. These valves are commonly employed in various industries, including construction, agriculture, and manufacturing, where hydraulic systems are prevalent, ensuring operator safety and equipment protection.

The valve disk is held apart from the body with a spring fitted over the central stem of the valve. Apart from a small pressure drop, fluid can flow freely in the direction from Port 1 to Port 2. When fluid is flowing in the reverse direction, from Port 2 to Port 1, if the flow rate exceeds the valve setting (see dimension ‘T’ and adjacent graph), the valve disk will snap shut and close the ports of the valve.

Line mounted bodies available for easy installation. Cartridge body available for mounting directly onto the cylinder. Extremely sensitive to flow fluctuations.