 2019 Sun Hydraulics 1 of 2

MODEL

FQBA

Fixed orifice, flow fuse valve

CAPACITY: 8,5 L/min. / CAVITY: T-162A

(X)CONTROL

X Not Adjustable

(A)SETTING RANGE

A Replaceable Orifice .5 - 2.25 gpm (2 -

8,5 L/min.)

(N)SEAL MATERIAL

N Buna-N

E EPDM

V Viton

MATERIAL/COATING

Standard Material/Coating

/AP Stainless Steel, Passivated

/LH Mild Steel, Zinc-Nickel

NOTE: DATA MAY VARY BY CONFIGURATION. SEE CONFIGURATION SECTION.

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.

TECHNICAL DATA

Cavity T-162A

Series 0

Capacity 8,5 L/min.

Maximum Operating Pressure 350 bar

Maximum Valve Leakage at 110 SUS (24 cSt) 15 cc/min.@70 bar

Valve Hex Size 19,1 mm

Valve Installation Torque 27 - 33 Nm

Seal kit - Cartridge Buna: 990162007

Seal kit - Cartridge EPDM: 990162014

Seal kit - Cartridge Polyurethane: 990162002

Seal kit - Cartridge Viton: 990162006

Model Weight 0.07 kg.

sunhydraulics.com/model/

FQBA

TECHNICAL FEATURES

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.

PERFORMANCE CURVES

Model Code Example: FQBAXANCONFIGURATION OPTIONS