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FQBA

Description

Flow fuse cartridges are used to maintain the position of a hydraulic actuator in the event of a hose or line break. The valve allows flow to and from the actuator but closes instantly if flow from the actuator exceeds the setting of the valve. NOTE: Because the valve responds so rapidly, it is sensitive to any transient flow above the valve setting.

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  • Customer must specify a flow rating. Factory set flow ratings are within +/- 15% of the requested setting.
  • 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.
  • Valve closes when flow from port 1 to port 2 exceeds the setting of the valve. Valve resets when pressures at port 1 and port 2 are equal.
  • Flow setting should be at least 25% above maximum normal system flow. Customer must specify flow when ordering valve.
  • These are spool type valves, therefore there is leakage. Some actuator drift may occur.
  • 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.

Technical Data

Note: Data may vary by configuration. See CONFIGURATION section.

Cavity T-162A
Series 0
Capacity 2.25 gpm
Capacity (metric) 8,5 L/min.
Maximum Operating Pressure 5000 psi
Maximum Operating Pressure (metric) 350 bar
Maximum Valve Leakage at 110 SUS (24 cSt) 1 in³/min.@1000 psi
Maximum Valve Leakage at 110 SUS (24 cSt) (metric) 15 cc/min.@70 bar
Valve Hex Size 3/4 in.
Valve Hex Size (metric) 19,1 mm
Valve Installation Torque 20 – 25 lbf ft
Valve Installation Torque (metric) 27 – 33 Nm
Seal kit – Cartridge Viton: 990162006

Configuration Options

Control

X Not Adjustable

Setting Range

A Replaceable Orifice .5 – 2.25 gpm (2 – 8,5 L/min.)

Seal Material

N Buna-N
V Viton
E EPDM

Material/Coating

/AP Stainless Steel, Passivated
/LH Mild Steel, Zinc-Nickel
Cavity: T-162A
Nominal Capacity: 0,5-2,25 gpm (2-8,5 lpm)
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Possible variants

FQBAXAE, FQBA-XAE, FQBAXAN, FQBA-XAN, FQBAXAN/AP, FQBA-XAN/AP, FQBAXAN/LH, FQBA-XAN/LH, FQBAXAV, FQBA-XAV, FQBAXAV/AP, FQBA-XAV/AP, FQBAXAV/LH, FQBA-XAV/LH

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