SUN HYDRAULICS
RVIAKHN

***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 RVIAKHN (RVIAKHN) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation in hydraulic systems. When the inlet port pressure reaches the preset valve setting, it opens to the tank port, controlling flow to maintain system pressure. This model features a vent port that enables remote control through other pilot or 2-way valves. Known for its accuracy and low pressure rise relative to flow, the RVIAKHN operates smoothly and quietly with moderate speed. It can handle maximum pressure at port 2, making it suitable for cross-port relief circuits; however, users should consider spool leakage in such applications. The main stage orifice is safeguarded by a 150-micron stainless steel screen. It's important to ensure that the relief valve setting is higher than the pilot valve setting to maintain proper function. This cartridge incorporates Sun's floating style construction, reducing risks of internal component binding due to excessive torque during installation or variations in machining. The RVIAKHN is not recommended for load-holding applications due to potential spool leakage. It accommodates systems using phosphate ester fluids with EPDM seals but should not be exposed to petroleum-based substances as they can damage these seals. The RVIAKHN fits into a T-19A cavity and offers a capacity of up to 120 gpm (480 L/min). It operates at a maximum pressure of 5000 psi (350 bar) with control pilot flow ranging from 15-20 in\u00b3/min (0.25-0.33 L/min). The typical response time is approximately 10 ms, and maximum valve leakage at 110 SUS (24 cSt) is about 5 in\u00b3/min at 1000 psi (80 cc/min at 70 bar). The adjustment mechanism allows for up to five clockwise turns to increase settings, with specific torque requirements detailed for installation and locknut adjustments.