***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Hydraforce directly.***
The Hydraforce EHPR08-33-0-N-12DG (5278114) is a sophisticated, direct-acting, spool-type, proportional pressure reducing and relieving valve designed for advanced fluid power applications. This valve operates by allowing free flow from port 1 to port 3 when the coil is de-energized. Upon energization of the coil, it connects port 2 to port 1 and allows the control of reduced pressure in a proportional manner relative to the input electrical current. An increase in current enhances the controlled reduced pressure accordingly. A unique feature of this model is its ability to relieve pressure from port 1 to port 3 if the pressure at port 1 exceeds the coil-induced setting. It also includes a manual override operation that engages at approximately 2-14 turns, with each turn building up pressure by about 11.7 bar or 170 psi. The valve's performance is characterized by its robust handling of pressures up to 241.3 bar (3500 psi) at port 2 inlet and a proof pressure of up to 379.2 bar (5500 psi), with burst pressures reaching up to 827.4 bar (12000 psi). The EHPR08-33-0-N-12DG is equipped with both standard and optional features including 12 and 24-volt coils, an industry-common cavity, optional manual override, and optional waterproof E-Coils rated up to IP69K for enhanced durability against harsh environments. Its operational capabilities are further defined by maximum flow ratings of up to 4.0 lpm from port 1 to port 3 when the coil is deenergized, minimal internal leakage, and consistent performance across a broad temperature range from -40°C to +100°C with various seal options accommodating different service conditions. This valve's precise control and reliability make it ideal for applications requiring meticulous pressure management within hydraulic systems.