SUN HYDRAULICS
RVIALNV

***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 RVIALNV (Material Number: RVIALNV) is a ventable, pilot-operated, balanced piston relief cartridge designed to regulate pressure in hydraulic systems. This normally closed pressure regulating valve opens to the tank port when the inlet pressure reaches the set threshold, throttling flow to maintain desired pressure levels. It features a vent port that facilitates remote control via pilot or two-way valves. Known for its accuracy and low-pressure rise versus flow, this valve operates smoothly and quietly with moderate speed. The RVIALNV is suitable for cross-port relief circuits, accepting maximum pressure at port 2, though users should account for spool leakage in such applications. The main stage orifice is safeguarded by a 150-micron stainless steel screen. It\u2019s important to note that the relief valve setting must exceed the pilot valve setting and that it is not advisable for load-holding applications due to potential spool leakage. The cartridge incorporates Sun's floating style construction to reduce internal part binding risks from excessive installation torque or machining variations. Configured with EPDM seals, it is compatible with systems utilizing phosphate ester fluids but should not be exposed to petroleum-based substances as they could damage the seals. The RVIALNV fits into cavity T-19A and offers a capacity of up to 120 gpm (480 L/min). It operates at a maximum pressure of 5000 psi (350 bar), with a typical response time of 10 milliseconds and control pilot flow between 15-20 in\u00b3/min (0.25-0.33 L/min). The maximum valve leakage at 110 SUS (24 cSt) stands at 5 in\u00b3/min (80 cc/min) under 1000 psi (70 bar). Installation requires specific torque settings: valve installation torque ranges from 350-375 lbf ft (474-508 Nm), while locknut torque falls between 80-90 lbf in (9-10 Nm).