SUN HYDRAULICS
RBACKDV

***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 RBACKDV (RBACKDV) is a direct-acting, pilot relief cartridge designed for remote pressure control in hydraulic systems. This model is specifically used to manage the pressure settings of other pilot-operated valves, making it suitable for load holding applications. It operates with a capacity of 0.25 gallons per minute (1 L/min) and can handle a maximum operating pressure of 5000 psi (350 bar). One of its key features is the incorporation of Sun's floating style construction, which minimizes the risk of internal parts binding due to excessive installation torque or machining variations. The RBACKDV model is equipped with a main stage orifice protected by a 150-micron stainless steel screen and offers corrosion-resistant options identified by suffixes AP or LH for external components. The valve's response time is typically 2 milliseconds, and it has a maximum leakage rate of 5 drops/minute at 110 SUS (24 cSt). The valve setting can be adjusted through its full range using W or Y controls unless a special setting is specified. This cartridge valve uses EPDM seals, making it compatible with systems utilizing phosphate ester fluids but not suitable for petroleum-based fluids. Back pressure on tank port 2 directly adds to the valve setting at a 1:1 ratio, ensuring precise control in various applications. The RBACKDV model also features an adjustment screw with an internal hex size of 5/32 inches and requires specific torque settings for installation and locknut adjustments. Overall, the Sun Hydraulics RBACKDV provides reliable performance in controlling hydraulic system pressures while offering robust construction and adaptability to corrosive environments.