SUN HYDRAULICS
RELIEF CART
RBACLAN

SUN HYDRAULICS
Material:RBACLAN
Model:RBAC-LAN
Summary:Cartridge

Due to extremely high demand, please call 877-366-7226 for availability

***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 RBACLAN (Material Number: RBACLAN) is a direct-acting, pilot relief cartridge designed for use in systems where remote pressure control of other pilot-operated valves is necessary. It is specifically suitable for load holding applications and can handle maximum operating pressures up to 5000 psi (350 bar). This cartridge valve features a capacity of 0.25 gpm (1 L/min) and incorporates a main stage orifice protected by a 150-micron stainless steel screen. The valve's design includes corrosion-resistant options, with external components available in stainless steel or zinc-nickel plating, identified by model code suffixes AP or LH respectively. The RBACLAN model is equipped with EPDM seals, making it compatible with phosphate ester fluids while being unsuitable for petroleum-based fluids. This valve provides adjustable settings using W and Y controls, with the option for special settings that define the maximum setting range. The response time for this cartridge is typically 2 ms, and it allows a maximum leakage of 5 drops/min at 110 SUS (24 cSt). Installation requires specific torque values: the valve hex size is 7/8 inch (22.2 mm), with an installation torque between 30 to 35 lbf ft (41 to 47 Nm). The adjustment screw has an internal hex size of 5/32 inch (4 mm), and the locknut requires a torque of 80 to 90 lbf in (9 to 10 Nm). Weighing approximately .30 lb (.15 kg), this model also utilizes Sun's floating style construction to prevent internal binding due to installation variations.

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.

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.
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.
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-10A
Series	1
Capacity	.25 gpm1 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	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	.30 lb0,15 kg
Seal kit - Cartridge	Viton: 990-010-006

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Additional Resources

Notes:

For Series 1 cartridges configured with an O control (panel mount handknob), a .75 in. (19 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 HYDRAULICSRELIEF CARTRBACLAN

Additional Resources

SUN HYDRAULICS
RELIEF CART
RBACLAN