SUN HYDRAULICS
SXCALDV

***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 SXCALDV (SXCALDV) is a direct-acting sequence valve designed to supply a secondary circuit with flow once the pressure at the inlet port 1 exceeds the valve setting. This component is engineered to control pressure at port 1 relative to the pressure at the drain port 3, ensuring precision in hydraulic systems. All three-port sequence cartridges are interchangeable, offering identical flow paths and cavity compatibility for a given frame size. Despite being a zero pilot flow valve, it requires port 3 to be connected to maintain a pressure reference in the control chamber; blocking port 3 can lead to malfunction due to reciprocating seal weepage. The pressure at port 3 adds directly to the valve setting at a 1:1 ratio and should not surpass 5000 psi (350 bar). This makes it suitable for load-holding applications in various environments, including corrosive conditions when paired with corrosion-resistant options like stainless steel or zinc-nickel plated components. The SXCALDV incorporates Sun's floating style construction, minimizing internal binding due to excessive installation torque or machining variations. It fits into cavity T-11A with a series 1 capacity of up to 15 gpm (60 L/min) and operates under a maximum pressure of 5000 psi (350 bar). Typical response time is around 2 ms, and maximum leakage at reseat is limited to 10 drops/min (0.7 cc/min). The adjustment mechanism allows for up to four clockwise turns for setting increases, with specific torque requirements for installation and locknut adjustments. Weighing approximately .30 lb (.15 kg), this model offers robust performance and reliability in demanding hydraulic applications.