SUN HYDRAULICS
SCGACWN

***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 SCGACWN (SCGACWN) is a direct-acting sequence valve designed to supply a secondary circuit with flow once the inlet port pressure exceeds the valve setting. This model features an integral check valve, allowing reverse flow from port 2 to port 1. The sequence valves are interchangeable in terms of flow path and cavity for a given frame size, ensuring versatility in application. Despite being a zero pilot flow valve, it is essential to connect port 3 drain to maintain pressure reference in the control chamber; blockage here can lead to malfunction due to reciprocating seal weepage. The pressure at port 3 adds directly to the valve setting and should not exceed 5000 psi (350 bar). It is suitable for load holding applications and incorporates Sun's floating style construction, minimizing internal part binding due to installation torque or machining variations. This model fits into cavity T-17A, Series 3, with a capacity of 60 gpm (240 L/min) and operates at a maximum pressure of 5000 psi (350 bar). It typically responds within 2 ms and has a maximum valve leakage at reseat of 10 drops/min (0.7 cc/min). The check cracking pressure stands at 25 psi (1.7 bar), with up to five clockwise turns available for setting adjustments. Installation requires specific torques: valve hex size is 1-1/4 inches (31.8 mm), with an installation torque of 150-160 lbf-ft (203-217 Nm). Adjustment screw internal hex size is 5/32 inches (4 mm), while locknut hex size is 9/16 inches (15 mm), requiring locknut torque of 80-90 lbf-in (9-10 Nm). The model weighs approximately 1.50 lb (0.70 kg) and uses Viton seal kit number: 990017006 for maintenance or replacement needs.