SUN HYDRAULICS
RVESCAN

$135.22 USD

SUN HYDRAULICS
Material:RVESCAN
Model:RVES-CAN
Summary:Cartridge

Quantity in stock: 0

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***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 RVESCAN (Material Number: RVESCAN) is a ventable, pilot-operated, balanced poppet relief cartridge designed for precise pressure regulation in hydraulic systems. This valve remains closed until the inlet port 1 pressure exceeds the preset threshold, at which point it opens to tank port 2 to throttle flow and maintain desired pressure levels. Featuring a vent port 3 between the main piston and pilot stage, it allows for remote control via other pilot or two-way valves. Known for its accuracy, low-pressure rise versus flow characteristics, smooth operation, and moderate response speed, this valve effectively mitigates issues related to cavitation such as noise and manifold erosion. The RVESCAN is ideal for load-holding applications provided that any valving on vent port 3 is zero leak. It can handle maximum pressure at port 2, making it suitable for cross-port relief circuits. The valve's performance remains stable despite variations in oil temperature and contamination levels due to its robust design. A stainless steel screen protects the main stage orifice from debris. Additionally, any backpressure on tank port 2 directly adds to the valve setting at a 1:1 ratio. Incorporating Sun's floating style construction minimizes risks of internal part binding from excessive installation torque or cavity machining variations. The cartridge fits into Cavity T-2A Series 2 with a capacity of up to 25 gpm (95 L/min) and operates under a maximum pressure of 5000 psi (350 bar). The control pilot flow ranges between 15-20 in\u00b3/min (0.25-0.33 L/min) with a typical response time of approximately 2 milliseconds. The valve exhibits minimal leakage at reseat with only up to ten drops per minute (0.7 cc/min).

Description

Ventable, pilot-operated, balanced-poppet relief cartridges are normally closed pressure regulating valves. When the pressure at the inlet (port 1) reaches the valve setting, the valve starts to open to tank (port 2), throttling flow to regulate the pressure. They provide a vent port (port 3) that connects between the main piston and pilot stage to provide for remote control by other pilot or 2-way valves. These valves are accurate, have low pressure rise vs. flow, they are smooth and quiet, and are moderately fast.

Because the modulating occurs inside the cartridge, these valves are immune to most of the problems associated with cavitation, namely noise and manifold erosion.
Suitable for use in load holding applications, providing that any valving on the vent port (port 3) is zero leak.
Will accept maximum pressure at port 2; suitable for use in cross port relief circuits.
A remote pilot relief on port 3 (vent) will control the valve below its own setting.
Valve is relatively insensitive to varying oil temperatures and oil borne contamination.
Main stage orifice is protected by a 150 micron stainless steel screen.
Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.

Cavity	T-2A
Series	2
Capacity	25 gpm95 L/min.
Factory Pressure Settings Established at	4 gpm15 L/min.
Maximum Operating Pressure	5000 psi350 bar
Control Pilot Flow	15 - 20 in³/min.0,25 - 0,33 L/min.
Response Time - Typical	2 ms2 ms
Maximum Valve Leakage at Reseat	10 drops/min.0,7 cc/min.
Adjustment - Number of Clockwise Turns to Increase Setting	55
Valve Hex Size	1 1/8 in.28,6 mm
Valve Installation Torque	45 - 50 lbf ft61 - 68 Nm
Adjustment Screw Internal Hex Size	5/32 in.4 mm
Locknut Hex Size	9/16 in.15 mm
Locknut Torque	80 - 90 lbf in.9 - 10 Nm
Model Weight	1.60 lb0,70 kg
Seal kit - Cartridge	Viton: 990-402-006

Show FAQ

Where would I use a kick-down relief?	One graphic example is on a portable grain auger for silos. When the farmer gets caught in the auger the kick-down relief trips and allows him to escape.
What are the tolerances on pressure settings for Sun's pressure control valves?	Pressure setting tolerances are listed in our Performance Data page. A link to this page can also be found in the Additional Resources tab of the applicable product page.
How big is a drop of hydraulic oil?	There are exactly 250 Sun drops in a cubic inch or 15 in a cc.
Can I use a kick-down relief for my system relief?	Maybe not. We build in a good amount of overlap in the kick-down reliefs to prevent false tripping. This means they are not as fast as our standard pilot-operated reliefs. A direct-acting relief valve set just above the kick-down relief valve would be good insurance.
Direct acting or pilot operated - what do I use?	Direct-acting valves are used to prevent over pressure, and pilot-operated valves are used to regulate pressure. If you are unsure, use a direct-acting valve. Sun's direct acting valves are very fast, dirt tolerant, stable, and robust. Sun's pilot-operated valves are moderately fast, they have a low pressure rise vs. flow curve, and they are easy to adjust.

SUN HYDRAULICSRVESCAN

Additional Resources

SUN HYDRAULICS
RVESCAN