Created on 12/14/2016
c
2016 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 1 of 2
MODEL
FRDD
Slow response, fixed orifice, bypass/restrictive, priority, flow control valve
SERIES 2 / CAPACITY: 45 L/min. / CAVITY: T-2A
Bypass/restrictive, fixed-orifice, priority flow controls take an input flow at port 1 and use it to satisfy the priority flow
at port 3. If the input flow exceeds the priority flow requirement, the excess is bypassed out port 2. The bypass flow
may be used in a secondary circuit.
TECHNICAL DATA
Cavity T-2A
Series 2
Capacity 45 L/min.
Maximum Operating Pressure 350 bar
Maximum Input Flow 120 L/min.
Valve Hex Size 28,6 mm
Valve Installation Torque 61 - 68 Nm
Adjustment Screw Internal Hex Size 4 mm
Locknut Hex Size 15 mm
Locknut Torque 9 - 10 Nm
Seal kit - Cartridge Buna: 990202007
Seal kit - Cartridge Polyurethane: 990002002
Seal kit - Cartridge Viton: 990202006
Model Weight 0.20 kg.
(X)CONTROL
X Not Adjustable
C Tamper Resistant - Factory Set
K Handknob
L Tuning Adjustment
O Handknob with Panel Mount
(A)SETTING RANGE
A Replaceable Orifice .1 - 12 gpm (0,4 -
45 L/min.)
B Permanent Orifice .1 - 12 gpm (0,4 - 45
L/min.)
(N)SEAL MATERIAL
N Buna-N
V Viton
snhy.com/FRDD
For Series 1 cartridges configured with an O control (panel mount handknob), a .75 in. (19 mm) diameter hole is required in the panel.
NOTES
Model Code Example: FRDDXANCONFIGURATION OPTIONS
Created on 12/14/2016
c
2016 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 2 of 2
TECHNICAL FEATURES
This valve is more highly damped than the FRDA to help solve system instability problems.
Customer must specify a flow rating. Factory set flow ratings are within +/- 10% of the requested setting.
Maximum pressure at port 3 should be limited to 3000 psi (210 bar).
Both priority and bypass flow are usable up to the system operating pressure.
Priority remains relatively constant regardless of variation in input flow.
Bypass flow is not available until priority flow requirements are satisfied.
Pressure at the bypass port (port 2) may exceed pressure at the priority port (port 3).
The sharp-edged orifice design minimizes flow variations due to viscosity changes.
A tuneable adjustment control option provides up to +/- 25% variation from the nominal factory pre-set flow. Adjustment is done with +/- 3 turns of the adjust screw.
Screw in (CW) to increase flow.
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
