SUN HYDRAULICS
RVESCBN

$133.20 USD

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SUN HYDRAULICS
Material:RVESCBN
Model:RVES-CBN
Summary:Cartridge

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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 RVESCBN (Material Number: RVESCBN) is a ventable, pilot-operated, balanced poppet relief cartridge valve designed for precise pressure regulation in hydraulic systems. This normally closed valve begins to open to tank port 2 when the inlet port 1 pressure reaches the set threshold, effectively throttling flow to maintain consistent pressure levels. A unique feature of this valve is its vent port 3, which facilitates remote control via other pilot or two-way valves. Known for its accuracy and low-pressure rise versus flow characteristics, the RVESCBN operates smoothly and quietly with moderate speed. This relief cartridge is particularly suitable for load-holding applications, provided that any valving on vent port 3 ensures zero leakage. It can handle maximum pressure at port 2, making it ideal for cross-port relief circuits. The valve's performance remains reliable under varying oil temperatures and contamination levels due to its robust design. The main stage orifice is safeguarded by a 150-micron stainless steel screen, ensuring longevity and durability. The RVESCBN incorporates Sun's floating style construction to minimize risks of internal part binding from excessive installation torque or machining variations. It supports a maximum operating pressure of 5000 psi (350 bar) and a flow capacity of up to 25 gpm (95 L/min). The factory-set pressure settings are established at a flow rate of 4 gpm (15 L/min), with an adjustment range facilitated by a screw with an internal hex size of 5/32 inches (4 mm). This model also features a locknut hex size of 9/16 inches (15 mm) with an installation torque specification between 45-50 lbf ft (61-68 Nm). With minimal maximum valve leakage at reseat and rapid response time, this valve ensures efficient operation across various hydraulic applications.

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 HYDRAULICSRVESCBN

Additional Resources

SUN HYDRAULICS
RVESCBN