SUN HYDRAULICS
RVEAOIV

$137.20 USD

Tags:

SUN HYDRAULICS
Material:RVEAOIV
Model:RVEA-OIV
Summary:Cartridge

Quantity in stock: 0

Note: Sales tax, and shipping will be calculated at checkout.

***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 RVEAOIV (RVEAOIV) is a ventable, pilot-operated, balanced piston relief cartridge designed for precise pressure regulation. This valve remains normally closed and opens to the tank port when the inlet pressure reaches the set value, thereby regulating flow and maintaining desired pressure levels. It features a vent port that allows for remote control by other pilot or 2-way valves. The valve is known for its accuracy, low pressure rise versus flow, smooth operation, quiet performance, and moderate speed. It can accept maximum pressure at port 2 and is suitable for use in cross-port relief circuits; however, it should not be used in load-holding applications due to potential spool leakage. The main stage orifice of the RVEAOIV is protected by a 150-micron stainless steel screen. Back pressure on the tank port adds directly to the valve setting at a 1:1 ratio. Cartridges with EPDM seals are compatible with phosphate ester fluids but can be damaged by petroleum-based fluids. The floating style construction minimizes internal binding risks due to installation torque or machining variations. This Series 2 cartridge has a capacity of 30 gpm (120 L/min) and operates at a maximum pressure of 5000 psi (350 bar). The control pilot flow ranges from 10 to 15 in\u00b3/min (0.16 to 0.25 L/min), with a typical response time of 10 ms. Maximum valve leakage at specified conditions is limited to 3 in\u00b3/min (50 cc/min). The adjustment mechanism allows for fine-tuning with up to five clockwise turns increasing the setting, while installation requires specific torque values for both the valve and locknut components. Weighing just .70 lb (0.30 kg), this model offers robust performance in various hydraulic systems requiring reliable pressure regulation.

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.
Main stage orifice is protected by a 150 micron stainless steel screen.
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.
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.
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	30 gpm120 L/min.
Factory Pressure Settings Established at	4 gpm15 L/min.
Maximum Operating Pressure	5000 psi350 bar
Control Pilot Flow	10 - 15 in³/min.0,16 - 0,25 L/min.
Response Time - Typical	10 ms10 ms
Maximum Valve Leakage at 110 SUS (24 cSt)	3 in³/min.@1000 psi50 cc/min.@70 bar
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	.70 lb0,30 kg
Seal kit - Cartridge	Viton: 990-202-006

Show FAQ

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 HYDRAULICSRVEAOIV

Additional Resources

SUN HYDRAULICS
RVEAOIV