SUN HYDRAULICS
RVIAKAV

***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 RVIAKAV (RVIAKAV) is a ventable, pilot-operated, balanced piston relief cartridge designed primarily for pressure regulation. It remains normally closed until the inlet port pressure reaches the pre-set valve threshold, at which point it opens to the tank port to manage flow and maintain pressure. This model features a vent port that facilitates remote control via other pilot or 2-way valves, ensuring precise and smooth operation with low pressure rise versus flow rates. The valve is capable of handling maximum pressure at port 2, making it suitable for cross-port relief circuits while considering potential spool leakage. Its construction includes a 150-micron stainless steel screen protecting the main stage orifice. The RVIAKAV model incorporates Sun's floating style design to minimize internal binding due to installation torque or cavity machining variations. It is configured with EPDM seals for compatibility with phosphate ester fluid systems; however, exposure to petroleum-based fluids can damage these seals. With a cavity size of T-19A and a Series 4 capacity of up to 120 gpm (480 L/min), this valve can operate at pressures up to 5000 psi (350 bar). The control pilot flow ranges between 15-20 in\u00b3/min (0.25-0.33 L/min), and typical response time is around 10 ms. Notably, this valve is not ideal for load-holding applications due to potential spool leakage and requires that relief valve settings are always higher than pilot settings. Its installation involves specific torque requirements: a valve hex size of 1-5/8 inches (41.3 mm) with an installation torque between 350-375 lbf ft (474-508 Nm). The adjustment screw has an internal hex size of 5/32 inches (4 mm), while the locknut requires a torque of 80-90 lbf in (9-10 Nm). This product weighs approximately 3.10 lb (1.40 kg) and comes with Viton seal kit options available as accessories.