SUN HYDRAULICS
FTHCXWV

***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 FTHCXWV (FTHCXWV) is a 4-way, 3-position proportional directional valve designed for precise control of hydraulic flow. In its center position, work ports 2 and 4 are drained to port 5, while port 3 remains closed. This valve operates by utilizing pilot pressure at port 1, which opposes the spring force and creates a variable metering orifice between ports 3 and 4. This orifice adjusts proportionally to the pressure at port 1. Piloting at port 6 facilitates the opening of port 3 to port 2. The valve's design incorporates a force balance among flow forces, spring tension, and pilot pressure, offering partial self-compensation as load pressures fluctuate. The FTHCXWV valve is capable of handling up to a maximum operating pressure of 5000 psi (350 bar) and allows for a flow capacity of up to 80 gpm (320 L/min). It requires a minimum pilot pressure of 80 psi (5.5 bar) to shift the valve effectively. The maximum permissible pilot pressure for ports 1 and 6 is capped at 500 psi (35 bar). For enhanced accuracy in flow control applications, this valve can be paired with an external modulating logic element such as the LRCXHN for bypass circuits or LPCXHN for restrictive circuits. Constructed with Sun's floating style design, this valve minimizes internal part binding risks due to excessive installation torque or cavity/cartridge machining variations. It fits into a T-54A cavity and is equipped with Viton seals available under seal kit number 990054006. With low hysteresis levels at \u00b12% and leakage rates capped at specific conditions, this valve offers reliable performance in demanding hydraulic systems.