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Direct Acting Relief Valve – After Check
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The relief-after-check cartridge is a hybrid valve incorporating a direct-acting relief tee’d in after a check function. The check valve flow is from the inlet (port 2) to the system port (port1). When the pressure in the system (port 1) reaches the relief valve setting, the valve starts to open to tank (port 3), throttling flow to limit the pressure rise. These valves are smooth and quiet, essentially zero-leak, dirt-tolerant, immune to silting and are very fast. | |
Direct Acting Relief Valve – Before Check
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The relief-before-check cartridge is a hybrid valve incorporating a direct-acting relief tee’d in before a check function. When the pressure at the inlet (port 2) reaches the relief valve setting, the valve starts to open to tank (port 3), throttling flow to limit the pressure rise. The check valve flow is from the inlet (port 2) to the system port (port1). These valves are smooth and quiet, essentially zero leak, dirt tolerant, immune to silting and are very fast. | |
Ventable, Pilot Operated, Balanced Piston, Relief Valve – Before Check
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The ventable relief-before-check cartridge is a hybrid valve incorporating a ventable, pilot-operated, balanced piston relief tee’d in before a check function. When the pressure at the inlet (port 2) reaches the relief valve setting, the valve starts to open to tank (port 3), throttling flow to regulate the pressure. The check valve flow is from the inlet (port 2) to the system port (port1). The valve includes a vent port (port 4) that connects between the main piston and pilot stage to provide for remote control by other pilot or 2-way valves.
These valves are accurate, have low pressure rise vs. flow, are smooth, quiet, and are moderately fast. | |
Ventable, Pilot Operated, Balanced Piston, Relief Valve – Before Check with Integral Pilot Control Cavity
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The relief-before-check cartridge is a hybrid valve incorporating a normally closed, balanced piston modulating element tee’d in before a check function. The valve incorporates an integral pilot control cavity. The pilot control cavity will accept any T-8A pressure control cartridge. When the pressure at the inlet (port 2) reaches the pilot control valve setting, the modulating element starts to open to tank (port 3), throttling flow to regulate the pressure. The T-8A pilot section is drained to port 4. The check valve flow is from the inlet (port 2) to the system port (port 1). |
SUN Hybrid Relief Valves
Evolution Motion Solutions proudly partners with Sun Hydraulics to deliver the finest Cartridge Pressure Control Valves available. Our collaboration ensures that customers in multiple locations across the United States in Arkansas, Louisiana, Oklahoma and Texas Our commitment to excellence, combined with the reliability and performance of Sun Hydraulics, guarantees that you receive top-quality Cartridge Pressure Control Valves components for your specific needs.
