SUN HYDRAULICS
SCGALAN

***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 SCGALAN (SCGALAN) is a direct-acting sequence valve with an integrated reverse flow check, designed to manage secondary circuit flow once inlet port 1 pressure surpasses the preset valve threshold. This model features an integral check valve, enabling reverse flow from port 2 to port 1. The sequence valve's pressure setting regulates the pressure at port 1 in relation to the drain port 3. All three-port sequence cartridges are interchangeable, sharing identical flow paths and cavities for a specific frame size. Despite being a zero pilot flow valve, it's crucial to connect port 3 to maintain a pressure reference; blocking it could lead to malfunction due to seal weepage. Pressure at port 3 adds directly to the valve setting and should not exceed 5000 psi (350 bar). This model suits load-holding applications and incorporates Sun's floating style construction, reducing internal part binding risks due to excessive installation torque or machining variations. It fits into cavity T-17A Series 3 and has a capacity of up to 60 gpm (240 L/min). Factory pressure settings are established at 2 in/min (30 cc/min), with a maximum operating pressure of 5000 psi (350 bar) and typical response time of about 2 ms. Maximum valve leakage upon reseat is limited to ten drops per minute (0.7 cc/min), with check cracking pressure set at 25 psi (1.7 bar). The adjustment mechanism allows five clockwise turns for increasing settings, with specific torque requirements for installation and locknut adjustments provided in technical specifications.