HydraForce, Inc. Proportional Flow Control Vave HSPEC16-34

The HSPECxx-34 electroproportional flow control valves are the next wave of high-pressure multi-function valves introduced by HydraForce, complementing the HSPECxx-30 models launched just last year. While the HSPECxx-30 valves were designed for flow-sharing applications, the built-in damping of the HSPECxx-34 valves makes them ideal for superior load-holding while allowing for precise and stable flow control. They can also be applied in power-down and gravity-assisted lowering systems. Available in several sizes and flow ratings, from 36 lpm (9.5 gpm) to 98 lpm (26 gpm) HSPECxx-34 valves are rated to handle high hydraulic pressures of 350 bar (5075 psi). HSPECxx-34 valves are pilot-operated, normally closed valves with a sealed internal compensator and a full-flow pump-blocking check. With inlet at port 3, the HSPECxx-34 regulates flow out of port 2 regardless of load pressure with the flow rate proportional to current applied to the solenoid. When de-energized, the HSPECxx-34 valve blocks flow from port 3 to 2. Both the HSPECxx-30 and HSPECxx-34 valves provide multiple functions in a single cartridge, allowing the hydraulic manifold to be more compact in size, which results in reduced manifold space claim on a machine and greater flexibility in application. Application Ideas for HSPECxx-34 Multi-Function Valves Forklift trucks, telehandlers, and combine harvesters require precise control when adjusting their height as inefficient movement can cause a load to drop of decrease harvesting efficiency. An ideal application for the HSPECxx-34 valves are lift, lower and tilt functions of a harvester header. The HSPECxx-34 valves can provide smooth and responsive raising/lowering of the header. These stable electrohydraulic control valves ensure the header follows terrain at a height that keeps dirt and debris out of the feed chute, providing maximum yield of good, clean crop. An innovative application for the HSPECxx-34 valves is a boom control circuit that benefits from the ability to selectively choose between power-down and gravity-assisted lowering. By using the boom's structurally induced load pressure, the HSPECxx-34 harnesses the natural force of gravity and provides smooth and stable lowering. With an emphasis toward increased efficiency, the HSPECxx-34 has the potential to convert gravity-assist lowering into significant fuel savings. Features/Benefits The HSPECxx-34 proportional flow control valve is a high pressure, 3-way, normally closed, solenoid-operated cartridge valve designed for post-compensated applications with load-sense systems. Load Holding Load-holding is one of the HSPECxx-34 valve's most useful features. Low Leakage The sealed compensator of the HSPECxx-34 valve reduces the potential for hydraulic leakage. Space Savings A single HSPECxx-34 valve replaces several valves as it combines the functionality of an electro-proportional flow control valve, a pressure compensating logic element and a load-holding valve. This takes up less space in the manifold, allowing it to have a smaller "hydraulic footprint." This translates to savings in multiple areas - reduced size and weight for the machine, lower fuel cost, greater efficiency, parts consolidation, etc. For More Information If you have questions about the new HSPECxx-34 cartridge valves, contact your HydraForce Regional Sales Manager.