SUN HYDRAULICS
SCGALEN

***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 SCGALEN (SCGALEN) is a direct-acting sequence valve with a reverse flow check, designed to supply a secondary circuit with flow once the inlet port 1 pressure exceeds the valve setting. This model features an integral check valve that allows reverse flow from port 2 to port 1. The sequence valve's pressure setting controls the pressure at port 1 relative to the drain port 3, making it suitable for load holding applications. It incorporates Sun's floating style construction, reducing the risk of internal parts binding due to excessive installation torque or machining variations. This model is functionally interchangeable with other three-port sequence cartridges of the same frame size, maintaining consistent flow paths and cavity compatibility. Key specifications include a cavity type T-17A, Series 3 capacity of 60 gpm (240 L/min), and a maximum operating pressure of 5000 psi (350 bar). The response time is typically 2 ms, and maximum valve leakage at reseat is limited to 10 drops/min (0.7 cc/min). It has a check cracking pressure of 25 psi (1.7 bar) and allows adjustment through five clockwise turns to increase the setting. The valve hex size is 1-1/4 in. (31.8 mm), with an installation torque range of 150-160 lbf ft (203-217 Nm). Additional details include an adjustment screw internal hex size of 5/32 in. (4 mm) and locknut hex size of 9/16 in. (15 mm), with locknut torque set between 80-90 lbf in. (9-10 Nm). The model weighs approximately 1.50 lb (0.70 kg) and includes a Viton seal kit option under cartridge number 990017006, ensuring reliable performance across various applications where precise sequencing and load holding are critical.