SUN HYDRAULICS
RPGDAIV

***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 RPGDAIV (RPGDAIV) is an air-controlled, pilot-operated, balanced piston relief cartridge designed to regulate pressure using compressed air over a diaphragm instead of an adjustable spring. This specific model is normally closed and begins to open to tank port 2 when the inlet port 1 reaches the set pressure, effectively throttling flow to maintain the desired pressure level. Known for its accuracy, low-pressure rise versus flow, smooth operation, and moderate speed, this valve is suitable for cross-port relief circuits and can handle maximum pressures at port 2. The maximum allowable air pressure should not exceed 150 psi (10 bar). The RPGDAIV incorporates Sun's floating style construction to minimize potential internal part binding due to excessive installation torque or machining variations. This valve fits into a T-3A cavity with a series 2 capacity of up to 50 gpm (200 L/min) and has a pilot ratio of 20:1. It can operate under pressures up to 2000 psi (140 bar) with a typical response time of approximately 10 ms. Valve leakage is minimal at a rate of up to 3 in\u00b3/min (50 cc/min) at 1000 psi (70 bar), ensuring efficient performance. The valve has a hex size of 1-1/8 inches (28.6 mm) and requires an installation torque between 45 and 50 lbf-ft (61 and 68 Nm). Weighing in at just .50 lb (.25 kg), it is lightweight yet robust, making it ideal for various hydraulic applications requiring precise pressure regulation. Additionally, it comes with a Viton seal kit for enhanced durability under different operating conditions.