SUN HYDRAULICS
RPKDBJN

***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 RPKDBJN (RPKDBJN) is an air-controlled, pilot-operated, balanced piston relief cartridge designed to control pressure using compressed air over a diaphragm instead of an adjustable spring. This valve is normally closed and regulates pressure by opening to the tank port when the inlet pressure reaches the valve setting. It offers accurate performance with low pressure rise relative to flow, ensuring smooth and quiet operation with moderate speed. The RPKDBJN can accept maximum pressure at port 2, making it suitable for cross-port relief circuits. It features a maximum air pressure limit of 150 psi (10 bar) and incorporates Sun's floating style construction to reduce the risk of internal parts binding due to excessive installation torque or machining variations. The cartridge fits into a T-18A cavity and belongs to Series 4, providing a capacity of 200 gpm (760 L/min) with a pilot ratio of 20:1. It operates at a maximum pressure of 2000 psi (140 bar) with a typical response time of 10 milliseconds. The valve has a maximum leakage rate of 5 in\u00b3/min (80 cc/min) at 110 SUS (24 cSt). The hex size for this valve is 1-5/8 inches (41.3 mm), and it requires an installation torque between 350-375 lbf ft (474-508 Nm). Weighing in at approximately 2.50 lb (1.15 kg), this model uses Viton seal kits for effective sealing solutions. This relief cartridge is ideal for applications requiring precise pressure regulation without the need for manual spring adjustments, making it versatile in various hydraulic systems where maintaining consistent system pressures is critical.