SUN HYDRAULICS
RVCSCWN

$116.40 USD

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SUN HYDRAULICS
Material:RVCSCWN
Model:RVCS-CWN
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 RVCSCWN (Material Number: RVCSCWN) is a ventable, pilot-operated, balanced-poppet relief cartridge designed to be a normally closed pressure regulating valve. It opens to tank port 2 when the inlet port 1 pressure reaches the valve setting, allowing flow throttling to regulate pressure. The valve features a vent port 3 for remote control by other pilot or two-way valves, ensuring accuracy with low pressure rise versus flow. This design results in smooth and quiet operation with moderate speed. The internal modulating mechanism makes it resistant to cavitation issues such as noise and manifold erosion. It is compatible with phosphate ester fluids when equipped with EPDM seals but should not be exposed to petroleum-based fluids as they can damage the seals. The cartridge can handle maximum pressure at port 2, making it suitable for cross-port relief circuits and load-holding applications. The valve's performance is relatively unaffected by oil temperature variations and contamination, thanks to its protected main stage orifice featuring a 150-micron stainless steel screen. A back pressure on tank port 2 adds directly to the valve setting at a 1:1 ratio. With Sun's floating style construction, internal binding due to excessive installation torque or machining variations is minimized. The RVCSCWN has a capacity of 15 gpm (60 L/min) and operates at a maximum pressure of 5000 psi (350 bar). Its control pilot flow ranges between 7-10 in\u00b3/min (0.11-0.16 L/min), with a typical response time of 2 ms and minimal leakage at reseat of up to 10 drops/min (0.7 cc/min). Installation specifications include a valve hex size of 7/8 inch (22.2 mm) and an installation torque range of 30-35 lbf\u00b7ft (41-47 Nm).

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.
Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
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.
Suitable for use in load holding applications.
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-11A
Series	1
Capacity	15 gpm60 L/min.
Factory Pressure Settings Established at	4 gpm15 L/min.
Maximum Operating Pressure	5000 psi350 bar
Control Pilot Flow	7 - 10 in³/min.0,11 - 0,16 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	7/8 in.22,2 mm
Valve Installation Torque	30 - 35 lbf ft41 - 47 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	.35 lb0,15 kg
Seal kit - Cartridge	Viton: 990-611-006

Show FAQ

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.
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.

SUN HYDRAULICSRVCSCWN

Additional Resources

SUN HYDRAULICS
RVCSCWN