SUN HYDRAULICS
DVBM8FN

***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 DVBM8FN (DVBM8FN) is a normally open, 2-way directional cartridge valve that features an integral pilot control cavity. This versatile valve can function independently or be used to actuate larger pilot-operated directional cartridges or logic elements. The valve operation is initiated by flow through the pilot control cartridge installed in the T8A cavity. Port 3 serves as a work port, with a bidirectional flow path between port 2 and port 3. It is important to install the main stage valve to the correct torque value before fitting the T8A pilot control section into the main stage valve with its required torque value. The DVBM8FN is not bistable but can modulate between two positions, requiring a pressure source at port 1 relative to port 4 for shifting. The design incorporates Sun's floating style construction to reduce internal binding due to excessive installation torque or variations in cavity-cartridge machining. It includes an option for incorporating pilot control valves directly into the end of the directional cartridge via the T8A cavity, which are sold separately and available in solenoid, air pilot, and hydraulic pilot operations. The valve has a capacity of 7 gpm (28 L/min) and can operate at pressures up to 5000 psi (350 bar). The leakage rate at maximum operating conditions is minimal at 2 in\u00b3/min (30 cc/min). The DVBM8FN uses a T21A cavity and has a model weight of .50 lb (.25 kg). Installation requires a torque of 30-35 lbf ft (41-47 Nm), and it uses Viton seal kits for optimal performance.