Solutions for advanced hydraulic systems Imprint Applications Products News & Downloads Services Contact Home Load Holding Valves WESSEL Load Holding Valves are used in construction machines in order to secure the  boom (boom, buckel, stick). In case of a line or hose break the load holding valve avoids  an uncontrolled movement of the cylinder and  allows a controlled and safe lowering of the  boom.  Beyond that WESSEL Load Holding Valves stand for very smooth and precisely  operated construction machines.  • loadpressure independent • leakage free • smooth and precisely operated • direct transmission ratio • excellent operational handling due to patented  seal relieving Further versions and individual adjustent to customers application on demand. Further versions and individual adjustment to customers application on demand. SAE 1”   6000psi, Regeneration 427.063.967.9 description Part Nr. schematic datasheet SAE 3/4”   6000psi, Standard 426.063.956.9 description Part Nr. schematic SAE 3/4”   3000psi, Standard 426.063.955.9 SAE 1”      6000psi, Standard 427.063.956.9 SAE 1”      3000psi, Standard 427.063.961.9 SAE 1 1/4” 6000psi 428.063.906.9 SAE 1/2”   6000psi 425.063.910.9 SAE 1”      6000psi, electr.prop. 537.364.003.9 datasheet 425.063.912.9 G 3/4        6000psi  SAE 1”      6000psi 427.063.966.9 426.063.956.9 SAE 3/4 6000psi, Standard 427.063.961.9, SAE 1, 3000psi, Standard 427.063.956.9, SAE 1,6000psi, Standard 426.063.955.9, SAE 3/4 3000psi, Standard 425.063.910.9, SAE 1/2", 6000psi 425.093.912.9, G3/4", 6000 psi 428.063.906.9, SAE1 1/4", 6000psi 537.364.003.9, SAE 1, 6000psi, elektr.prop. 427.063.966.9, SAE1", 6000psi 427.063.967.9, SAE1", 6000psi, Regeneration SAE 1” 427.063.965.9 426.063.959.9 SAE 3/4” SAE 1” 6000psi,lowering down speed adjustable 6000psi,lowering down speed adjustable 426.063.959.9, SAE3/4", 6000psi, Senkgeschwindigkeit einstellbar 427.063.965.9, SAE3/4", 6000psi, Senkgeschwindigkeit einstellbar  Safety Valves  Flow Control Valves  Directional Control Valves  Lock Valves  Pressure Valves  Valve Systems  Load Holding Valves  Lowering Brake Valves  Brake Valves  Slewing Brake Valves  Priority Valves  Flow Divider  Throttling Check Valves  Main Control Valves  Regenerative Valves  Additional Section  Directional Control Valve 2/2  Directional Control Valve 3/2  Directional Control Valve 3/3  Directional Control Valve 5/2  Directional Control Valve 5/3  Check Valves  Pressure Limiting Valves  Pressure Reducing Valves  Controller  Joystick handle  Quickcoupler Valves  Directional Control Valve 6/2-6/3 WESSEL Tool Control plus Upgrading of construction machines equiped with Quick-Coupler-Systems. Proportional control of up to 16 different attachments Load Holding Valves The key for a safe machine: Requirements for Load Holding Valves. . . . Loweríng Brake Valves Safe valve technology for mobile construction machines Main Valve Proportional Control Valve for mobile applications, LS- valve in sectional construction With effect form October 2011 our company is certified by german customs as AEO-F