SUN HYDRAULICS
RBAAYDN

$115.66 USD

SUN HYDRAULICS
Material:RBAAYDN
Model:RBAA-YDN
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 RBAAYDN (RBAAYDN) is a direct-acting pilot relief cartridge valve designed for remote pressure control in hydraulic systems. This valve is specifically engineered to manage pilot flow, making it essential to pair with higher flow valves for optimal performance. Its main stage orifice is safeguarded by a 150-micron stainless steel screen, ensuring reliable operation in load-holding applications. One notable feature is that back pressure on the tank port (port 2) directly adds to the valve setting at a 1:1 ratio, allowing precise pressure adjustments. Cartridges with EPDM seals are suitable for phosphate ester fluid systems but should avoid petroleum-based substances to prevent seal damage. The valve offers corrosion-resistant options identified by the model code suffix AP or LH, catering to different environmental needs. The RBAAYDN incorporates Sun's floating style construction, minimizing internal part binding due to installation torque or cavity machining variations. It fits a T-3A cavity and supports a flow capacity of 0.5 gpm (2 L/min), withstanding maximum operating pressures up to 5000 psi (350 bar). The typical response time for this valve is approximately 2 milliseconds, and it exhibits minimal leakage at specified conditions. Adjustability is facilitated through the W or Y control settings, with provisions for special maximum settings if required. The valve's dimensions include a hex size of 1-1/8 inches (28.6 mm) and an installation torque range of 45-50 lbf ft (61-68 Nm). Additionally, adjustment screw and locknut specifications ensure secure and accurate calibration. Overall, the Sun Hydraulics RBAAYDN provides robust and stable pressure control solutions suitable for various hydraulic applications where precise pressure management is crucial.

Description

Direct-acting, pilot relief cartridges are used to remotely control the pressure setting of other pilot-operated valves. Because capacity is limited to pilot flow, these valves should be used with other higher flow valves.

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.
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.
W and Y controls (where applicable) can be specified with or without a special setting. When no special setting is specified, the valve is adjustable throughout its full range using the W or Y control. When a special setting is specified, this setting represents the maximum setting of the valve.
Corrosion resistant cartridge valves are intended for use in corrosive environments and are identified by the model code suffix /AP for external stainless steel components, or /LH for external zinc-nickel plated components. See the CONFIGURATION section for all options. For further details, please see the Materials of Construction page located under TECH RESOURCES.
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-3A
Series	2
Capacity	.5 gpm2 L/min.
Maximum Operating Pressure	5000 psi350 bar
Response Time - Typical	2 ms2 ms
Maximum Valve Leakage at 110 SUS (24 cSt)	5 drops/min.0,3 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	.50 lb0,25 kg
Seal kit - Cartridge	Viton: 990-203-006

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Additional Resources

Notes:

For Series 2 cartridges configured with an O control (panel mount handknob), a 1.00 in. (25,4 mm) diameter hole is required in the panel.

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 HYDRAULICSRBAAYDN

Additional Resources

SUN HYDRAULICS
RBAAYDN