SUN HYDRAULICS
RPGTCAV

***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 Sun Hydraulics directly.***
The Sun Hydraulics RPGTCAV (RPGTCAV) is a pilot-operated, anti-shock relief cartridge designed to limit maximum system pressure and control the rate of pressure rise. This valve, which opens and ramps closed at a constant speed regardless of settings or flows, features an adjustment screw for setting maximum relief and minimum threshold levels. It is compatible with all 2-port relief cartridges, allowing for physical and functional interchangeability within the same frame size. The RPGTCAV is suitable for cross-port relief circuits but not recommended for load-holding applications. When the inlet port pressure exceeds its threshold setting, the valve redirects flow to tank port 2, with back pressure directly adding to the valve setting at a 1:1 ratio. The RPGTCAV provides protection against pressure transients in pumps and motors caused by sudden load changes, making it particularly beneficial for variable displacement pumps and hydrostatic drives by minimizing jerks from sudden reversals. It can also be used with a switching device to achieve ramp characteristics typical of proportional valves. This feature enables small power units to start against an anti-shock relief, extending pump life. The valve incorporates Sun's floating style construction to minimize internal binding due to excessive torque or machining variations. It operates within a capacity of 50 gpm (200 L/min) and a maximum operating pressure of 5000 psi (350 bar). The factory pressure settings are established at 4 gpm (15 L/min), with control pilot flow ranging from 10-25 in\u00b3/min (0.16-0.41 L/min). The response time is typically around 2 ms, with a pressure ramp-up time between 200-400 ms. The valve allows up to 4.5 clockwise turns for setting adjustments and requires specific torque values for installation and adjustment components.