Created on 05/27/2016

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MODEL

FTHC

4-way, 3-position, meter in proportional directional valve

SERIES 4 / CAPACITY: 320 L/min. / CAVITY: T-54A

Y-Spool

W-Spool

This valve is a 4-way, 3 position, proportional directional valve. Work ports 2 and 4 are drained to 5 in the center

position and port 3 is closed. Pilot pressure at port 1 opposes the spring and creates a variable metering orifice

between ports 3 and 4 that is proportional to the pressure at 1. Piloting 6 opens 3 to 2. 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 ports 1 and 6 directly oppose each other.

TECHNICAL DATA

Cavity T-54A

Series 4

Capacity 320 L/min.

Minimum Pilot Pressure Required to Shift Valve 5,5 bar

Maximum Operating Pressure 350 bar

Maximum Valve Leakage at 110 SUS (24 cSt) 80 cc/min.@70 bar

Pilot Volume Displacement 4,3 cc

Maximum Pilot Pressure 35 bar

Hysteresis ± 2 %

Valve Hex Size 41,3 mm

Valve Installation Torque 474 - 508 Nm

Seal kit - Cartridge Buna: 990-054-007

Seal kit - Cartridge Polyurethane: 990-054-002

Seal kit - Cartridge Viton: 990-054-006

(X)CONTROL

X Not Adjustable

(Y)SPOOL CONFIGURATION

Y A and B to T Center

W A and B Bleed to T Center

(N)SEAL MATERIAL

N Buna-N

V Viton

MATERIAL/COATING

Standard Material/Coating

/AP Stainless Steel, Passivated

snhy.com/

FTHC

TECHNICAL FEATURES

Pilot ports 1 and 6 will accept 5000 psi (350 bar), however, pressures over 500 psi (35 bar) do not increase flow since at this point the spool will be fully shifted.

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.

Pressure at ports 1 and 6 directly oppose each other.

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.

Model Code Example: FTHCXYNCONFIGURATION OPTIONS