SUN HYDRAULICS
SCEACDN

***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 SCEACDN (SCEACDN) is a direct-acting sequence valve with a reverse flow check, designed to supply a secondary circuit with flow once the pressure at inlet port 1 surpasses the valve setting. This model includes an integral check valve that enables reverse flow from port 2 to port 1. The pressure setting manages the pressure at port 1 relative to drain port 3, which must be connected to maintain proper pressure reference in the control chamber. Blocking port 3 can lead to valve 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 exceed 5000 psi (350 bar). This valve is suitable for load-holding applications and features interchangeable ports for various frame sizes, ensuring consistent flow paths and cavity compatibility. It employs Sun's floating style construction, minimizing internal binding risks from installation torque or machining variations. The SCEACDN has a cavity T-2A series with a capacity of 30 gpm (120 L/min) and operates effectively up to a maximum pressure of 5000 psi (350 bar). Its response time is typically around 2 milliseconds, with maximum leakage at reseat being as low as ten drops per minute. The check cracking pressure is set at 25 psi (1.7 bar), and adjustments can be made through five clockwise turns. The valve's hex size measures at 1-1/8 inches (28.6 mm), requiring an installation torque between 45-50 lbf ft (61-68 Nm). For fine-tuning, the adjustment screw has an internal hex size of 5/32 inches (4 mm), while the locknut hex size is set at 9/16 inches (15 mm), demanding a torque of approximately 80-90 lbf in (9-10 Nm). Weighing in at .60 lb (.30 kg), this model also supports Viton cartridge seal kits for enhanced performance in diverse hydraulic applications.