SUN HYDRAULICS
RVBALQV

$87.50 USD

Tags:

SUN HYDRAULICS
Material:RVBALQV
Model:RVBA-LQV
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 RVBALQV (Material Number: RVBALQV) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation in hydraulic systems. This normally closed valve begins to open when the inlet port pressure reaches the set threshold, allowing flow to tank port 2 while maintaining regulated pressure. It features a vent port (port 3) for remote control, making it versatile for integration with other pilot or two-way valves. Known for its accuracy and minimal pressure rise against flow, the valve operates smoothly and quietly with moderate speed. This model is particularly suitable for cross-port relief circuits, accepting maximum pressure at port 2. However, users should be mindful of spool leakage in such applications. It has a minimum setting of 75 psi (5 bar) across all spring ranges and is not recommended for load-holding applications due to potential leakage. The valve setting is directly influenced by back pressure on tank port 2 at a 1:1 ratio. Built with Sun\u2019s floating style construction, this cartridge minimizes internal binding risks due to installation torque or machining variations. It offers a capacity of 7.5 gpm (30 L/min) and can handle a maximum operating pressure of 5000 psi (350 bar). The factory settings are established at a flow rate of 4 gpm (15 L/min), with typical response times around 10 milliseconds. Additional specifications include an adjustment range requiring up to five clockwise turns to increase settings, with specific torque values provided for installation and locknut adjustments. The main stage orifice is protected against contamination, ensuring durability and reliability in demanding environments. This model weighs approximately .30 lb (.15 kg) and includes options for Viton seals under part number 990163006.

Description

Ventable, pilot-operated, balanced piston 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.

A remote pilot relief on port 3 (vent) will control the valve below its own setting.
Will accept maximum pressure at port 2; suitable for use in cross port relief circuits. If used in cross port relief circuits, consider spool leakage.
Minimum setting is 75 psi (5 bar) for all spring ranges.
Not suitable for use in load holding applications due to spool leakage.
Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
The main stage orifice is protected against contamination.
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-163A
Series	0
Capacity	7.5 gpm30 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	10 ms10 ms
Maximum Valve Leakage at 110 SUS (24 cSt)	2 in³/min.@1000 psi30 cc/min.@70 bar
Adjustment - Number of Clockwise Turns to Increase Setting	55
Valve Hex Size	3/4 in.19,1 mm
Valve Installation Torque	20 - 25 lbf ft27 - 33 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: 990-163-006

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 HYDRAULICSRVBALQV

Additional Resources

SUN HYDRAULICS
RVBALQV