SUN HYDRAULICS
FRDALAV

$97.00 USD

SUN HYDRAULICS
Material:FRDALAV
Model:FRDA-LAV
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 FRDALAV (Material Number: FRDALAV) is a bypass-restrictive, fixed-orifice, priority flow control valve designed to manage input flow effectively by prioritizing the flow at port 3 while bypassing any excess through port 2. This model is ideal for applications requiring precise flow management where the priority flow must remain constant despite variations in input flow. The valve can handle a maximum pressure of 3000 psi (210 bar) at port 3 and supports both priority and bypass flows up to the system's operating pressure. The construction includes a sharp-edged orifice that minimizes flow variation due to changes in viscosity, and a tuneable adjustment feature allows for up to 25% variation from the nominal factory preset flow using an adjustment screw with three turns. The FRDALAV incorporates Sun's floating style construction, which reduces the risk of internal parts binding due to excessive installation torque or machining variations. It fits into a T-2A cavity and is capable of handling up to 12 gpm (45 L/min) with a maximum input flow of 30 gpm (120 L/min). The valve is compact with dimensions suitable for various installation needs; it has a hex size of 1-1/8 inches (28.6 mm) and requires an installation torque between 45-50 lbf ft (61-68 Nm). For secure adjustments, it includes an internal hex size of 5/32 inches (4 mm) for the adjustment screw and a locknut hex size of 9/16 inches (15 mm) with torque specifications of 80-90 lbf in (9-10 Nm). This model weighs approximately .40 lb (.20 kg) and uses Viton seals with cartridge seal kit number 990202006 available for maintenance purposes.

Description

Bypass/restrictive, fixed-orifice, priority flow controls take an input flow at port 1 and use it to satisfy the priority flow at port 3. If the input flow exceeds the priority flow requirement, the excess is bypassed out port 2. The bypass flow may be used in a secondary circuit.

Customer must specify a flow rating. Factory set flow ratings are within +/- 10% of the requested setting.
Maximum pressure at port 3 should be limited to 3000 psi (210 bar).
Both priority and bypass flow are usable up to the system operating pressure.
Priority remains relatively constant regardless of variation in input flow.
Bypass flow is not available until priority flow requirements are satisfied.
Pressure at the bypass port (port 2) may exceed pressure at the priority port (port 3).
The sharp-edged orifice design minimizes flow variations due to viscosity changes.
A tuneable adjustment control option provides up to +/- 25% variation from the nominal factory pre-set flow. Adjustment is done with +/- 3 turns of the adjust screw. Screw in (CW) to increase flow.
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	12 gpm45 L/min.
Maximum Operating Pressure	5000 psi350 bar
Maximum Input Flow	30 gpm120 L/min.
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	.40 lb0,20 kg
Seal kit - Cartridge	Viton: 990-202-006

Show FAQ

What happens if I block the bypass port on a priority flow control?	The valve acts as a 2 port restrictive flow control.
How big is a drop of hydraulic oil?	There are exactly 250 Sun drops in a cubic inch or 15 in a cc.
How accurate are Sun's flow controls?	We claim +/- 10%. We set to +/- 5% in production testing to allow for differences in customers' conditions. If you want accuracy, stay in the bottom 2/3rds of the range. Our 12 gpm (45 L/min.) flow controls are quite flat at 9 gpm (34 L/min.) and dead flat below 6 gpm (23 L/min.), until you get to the bottom of the range. Below about .25 gpm (1 L/min.), spool leakage and orifice conditions start to limit accuracy.
I have a heat problem, will Sun's priority flow control help?	I am afraid not. Unless you are overflowing your current valve and correctly size ours, you are not likely to notice any improvement. Priority flow controls are not efficient devices. They are an easy way to get more than 1 source of oil from 1 pump but they can generate a lot of heat. Try to size your actuators so the pressures are similar on both the priority and the bypass circuits. If you can't do that, try to have the lower flow leg be the lower pressure. The pump pressure is determined by whichever leg is higher and if there is flow that is taking a pressure drop that is not doing work it is creating heat.
What happens if I block the control flow (priority) port?	All flow is blocked, hence the term priority. The priority flow has to be satisfied.
What is the compensating pressure of Sun's flow controls?	The spring force in our flow controls equates to about 100 psi (7 bar). This is high enough to give the valves acceptable capacity (not really) and not too high for proper circuit operation. 100 psi (7 bar) is the spring force; at the upper end of the flow control's range, the drop through the valve will be as high as 250 psi (17 bar) before it starts modulating.
What is the pressure drop through a flow control?	In a meter-in flow control circuit if the pump is set at 3000 psi and the load is 2000 psi the drop through the flow control is 1000 psi. In a meter-out circuit with the load at 2000 psi the drop through the flow control is 2000 psi.

SUN HYDRAULICSFRDALAV

SUN HYDRAULICS
FRDALAV