SUN HYDRAULICS
RBACYAV

***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 RBACYAV (RBACYAV) is a direct-acting, pilot relief cartridge valve designed for remote pressure control in hydraulic systems. This valve is specifically engineered to manage pilot flow, making it ideal for use alongside higher flow valves in load-holding applications. The RBACYAV model features EPDM seals, which are compatible with systems utilizing phosphate ester fluids; however, these seals are susceptible to damage from petroleum-based substances. A 150-micron stainless steel screen protects the main stage orifice, ensuring reliable operation even under challenging conditions. The valve's setting can be influenced by back pressure on the tank port at a 1:1 ratio, and it offers adjustable settings through W and Y controls unless a special maximum setting is specified. Constructed with corrosion-resistant materials, this cartridge valve can be identified by its model code suffixes AP or LH for external stainless steel or zinc-nickel plated components, respectively. Sun Hydraulics' floating style construction minimizes the risk of internal binding due to installation torque or machining variations. The RBACYAV fits into a Cavity T-10A and operates at a maximum pressure of 5000 psi (350 bar), with a typical response time of 2 milliseconds and a capacity of 0.25 gpm (1 L/min). Leakage is minimal at 5 drops/min (0.3 cc/min) when using hydraulic oil at 110 SUS (24 cSt). Installation requires specific torque values: the valve hex size is 7/8 inch (22.2 mm) with an installation torque between 30-35 lbf ft (41-47 Nm), while the adjustment screw internal hex size is 5/32 inch (4 mm). Additionally, the locknut hex size measures 9/16 inch (15 mm) with a locknut torque of 80-90 lbf in (9-10 Nm). The model weighs approximately .30 lb (.15 kg), and Viton seal kits are available under part number 990010006.