SUN HYDRAULICS
FTCALCV

$247.70 USD

SUN HYDRAULICS
Material:FTCALCV
Model:FTCA-LCV
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 FTCALCV (Material Number: FTCALCV) is a 2-way, 2-position proportional throttle valve designed for precise flow control applications. This valve features ports 2 and 3 that are normally closed, while pilot pressure at port 1 opposes the spring to create a variable metering orifice between ports 2 and 3, proportional to the pressure at port 1. This design allows for partial self-compensation as the load pressure changes, with pressure at port 4 directly opposing pressure at port 1. The dual path design incorporates a double port area in ports 2 and 3, enhancing its functionality. The valve can be externally pressure compensated using modulating logic elements such as LRCXHN for bypass circuits or LPCXHN for restrictive circuits. It offers a degree of self-compensation and can be employed as a flow control device. For enhanced accuracy across varying flows and pressures, an external modulating logic element can maintain constant flow rates. The optional L control provides stroke adjustment to limit maximum flow. Key specifications include a T-52A cavity configuration, series 2 designation, and a capacity of up to 15 gpm (60 L/min). The minimum pilot pressure required to shift the valve is 80 psi (5.5 bar), with full shift at rated flow requiring 300 psi (20 bar). The maximum operating pressure is rated at 5000 psi (350 bar), with leakage limited to approximately 2 in\u00b3/min (30 cc/min) at specified conditions. This valve features Sun's floating style construction to reduce internal part binding due to installation torque or machining variations. It has an installation torque range of 45-50 lbf\u00b7ft (61-68 Nm) and comes with Viton seal kits available under part number: 990152006.

Description

This valve is a 2-way, 2 position, proportional throttle. Ports 2 and 3 are normally closed. Pilot pressure at port 1 opposes the spring and creates a variable metering orifice between port 2 and 3 that is proportional to the pressure at 1. The force balance of the flow forces, spring and pilot pressure results in a degree of partial self-compensation as the load pressure changes.

Pressure at port 4 directly opposes pressure at port 1.

The valve uses a dual path design. Ports 2 and 3 incorporate a double port area.

These valves may be pressure compensated by an external, modulating, logic element. Use LR_C-XHN for a bypass circuit or LP_C-XHN for a restrictive circuit.
The valve provides a degree of self-compensation and may be used as a flow control. To increase the accuracy of flow control, an external, modulating, logic element can be used to maintain a constant flow over a wider range of flows and pressures. See performance curves for additional information.
The optional L control is a stroke adjustment that limits maximum flow.
Ports 1 and 4 should be limited to 500 psi (35 bar).
Pressure at port 4 directly opposes pressure at port 1.
Accurate pressure compensated control requires that a constant pressure differential be maintained across the valve.
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-52AD
Series	2
Capacity	15 gpm60 L/min.
Minimum Pilot Pressure Required to Shift Valve	80 psi5,5 bar
Pilot Pressure Required for Full Shift at Rated Flow	300 psi20 bar
Maximum Operating Pressure	5000 psi350 bar
Maximum Valve Leakage at 110 SUS (24 cSt)	2 in³/min.@1000 psi30 cc/min.@70 bar
Pilot Volume Displacement	.05 in³0,82 cc
Adjustment - Number of Counterclockwise Turns - Fully Closed to Fully Open	55
Hysteresis	± 2 %± 2 %
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	1.00 lb0,45 kg
Seal kit - Cartridge	Viton: 990-152-006

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 HYDRAULICSFTCALCV

SUN HYDRAULICS
FTCALCV