Used to lock cylinders positively into position and to prevent load runaway during cylinder or motor movement.


  • Single or Dual Valves. Selection dependant on the geometry of the system.
  • Ratio. Standard Ratio. 7:1 or 10:1 dependant on valve size. Other ratios available.
  • Shuttle. Valves are available with a built in shuttle valve to hold a brake off during operation.
  • Tamperproof caps prevent un authorized adjustment.
  • Mechanical Override unlocks the valve to allow cylinder movement during power failure.

Valve Details:

Alt Text
Relief Valves  Direct ActingSize (BSP)
Cap TypesAvailable Cap Types for most Relief Valves       
V-241Line Mounted, Dual Crossline1/2",3/4"
V-369Line Mounted, Single,1/2",3/4"
V-441-ALine Mounted, Dual Crossline1/4"
V-441Line Mounted, Dual Crossline3/8",1/2"
V-448Banjo Mounted, Dual Crossline, OMP,OMR1/2"
V-452Manifold Mounted, Dual Crossline, OMP,OMR1/2"
V-467Line Mounted, Single, Differential Area, Crossline1/4",3/8",1/2"
V469-CLine Mounted, Single,1/4",3/8",1/2"
V-469Line Mounted, Single, Crossline1/4",3/8",1/2"
V-618Manifold Mounted, Dual Crossline, OMP,OMR1/2"
V-628Manifold Mounted, Single Crossline, OMP,OMR, with brake shuttle1/2"
V-665-CLine Mounted, Manual, High/Low Selector1/2"
V-9205Cartridge Pilot Operated Relief--
V-9575Cartridge Pilot Operated "Dumping" Relief--
Dual Overcentre ValvesSize (BSP)
V-256Line Mounted1/2", 3/4"
V-258Fully Manifold Mounted1/2", 3/4"
V-259Manifold Mounted1/2", 3/4"
V-296Line Mounted with Brake Shuttle1/2", 3/4"
V-296-SLine Mounted1/2", 3/4"
V-456Line Mounted1/4",3/8",1/2"
V-459Line Mounted, Part Manifold Mounted1/4",3/8",1/2"
V-496Line Mounted1/4",3/8",1/2"
V-496-SLine Mounted with Brake Shuttle1/4",3/8",1/2"