SUN HYDRAULICS
RVIDKWN

***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 RVIDKWN (RVIDKWN) is a ventable, pilot-operated, balanced piston relief cartridge featuring an external drain. These valves are normally closed pressure regulating components that open to the tank port when the inlet port pressure reaches a pre-set level, thus controlling flow to maintain desired pressure. The design includes a vent port for remote control via other pilot or 2-way valves and a drain port that makes the valve insensitive to back pressure. Known for their accuracy, low pressure rise versus flow, smooth operation, and moderate speed, these cartridges are capable of handling maximum pressures at port 2, making them suitable for cross-port relief circuits\u2014though spool leakage should be considered in such applications. The main stage orifice is shielded by a 150-micron stainless steel screen. However, they are not ideal for load-holding applications due to potential spool leakage. The pressure at port 4 adds directly to the valve setting at a 1:1 ratio, with a maximum limit of 5000 psi (350 bar). For systems utilizing phosphate ester fluids, cartridges with EPDM seals are recommended; exposure to petroleum-based substances will harm these seals. The Sun floating style construction minimizes internal binding risks due to installation torque or machining variations. This cartridge fits into Cavity T-24A and belongs to Series 4 with a capacity of 120 gpm (480 L/min). Factory settings are established at 4 gpm (15 L/min), with maximum operating pressures reaching up to 5000 psi (350 bar). Control pilot flow ranges from 15-20 in\u00b3/min (0.25-0.33 L/min), and typical response time is around 10 ms. Maximum valve leakage at specific conditions is noted as 5 in\u00b3/min (80 cc/min). Installation specifications include various torque settings and hex sizes for adjustment screws and locknuts. The model weighs approximately 3.10 lb (1.40 kg) and uses Viton seal kits like part number 990024006 for maintenance or replacement needs.