SUN HYDRAULICS
DRAYLAN

***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 DRAYLAN (Material Number: DRAYLAN) is a normally open, direct-acting 2-way directional cartridge with an external drain, functioning as a pilot unloading valve. This component is designed to sense pressure in one circuit and subsequently switch or unload a valve in another circuit. When the pressure at port 1 surpasses the valve's set threshold, the spool shifts to block port 2 from port 3. The valve features positively sealed pilot area port 1 and spring chamber drain port 4, ensuring minimal leakage between work ports 2 and 3, with less than 20 drops per minute (1.4 cc/min). The DRAYLAN model acts as a hydraulic pressure switch without modulation capabilities, incorporating Sun's floating style construction to reduce the risk of internal parts binding due to excessive installation torque or machining variations. This valve fits into cavity T-21A and belongs to Series 1, with a capacity of .5 gpm (2 L/min) and can handle a maximum operating pressure of up to 5000 psi (350 bar). Maximum valve leakage at reseat is maintained at 20 drops per minute. It reseats at approximately 85% of the setting. The hex size for installation is .78 inches (22.2 mm), requiring an installation torque between 30 to 35 lbf ft (41 to 47 Nm). The adjustment screw has an internal hex size of .156 inches (4 mm), while the locknut hex size is .562 inches (15 mm) with a locknut torque of 80 to 90 lbf in (9 to 10 Nm). The model weighs approximately .30 lb (.15 kg) and uses Viton seal kits for optimal performance.