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2025 Sun Hydraulics 1 of 2
MODEL
RSDSRSDS
Pilot-operated, balanced poppet sequence valve
SERIESSERIES 1 / 1 / CAPACITY:CAPACITY: 60 L/min. / 60 L/min. / CAVITY:CAVITY: T-11A T-11A
NOTE: DATA MAY VARY BY CONFIGURATION. SEE CONFIGURATION SECTION.
Pilot-operated, balanced poppet sequence valves will supply a secondary circuit with flow
once the pressure at the inlet (port 1) has exceeded the valve setting. The pressure setting of
a sequence valve controls the pressure at port 1 relative to the pressure at the drain (port 3).
These valves are insensitive to back pressure at port 2 (sequence), up to the valve setting.
They may be used to regulate pressure in place of 2-port relief valves if there is pressure in
the return line.
TECHNICAL DATATECHNICAL DATA
Cavity T-11A
Series 1
Capacity 60 L/min.
Maximum Operating Pressure 350 bar
Factory Pressure Settings Established at 15 L/min.
Maximum Valve Leakage at Reseat 0,7 cc/min.
Response Time - Typical 10 ms
Adjustment - No. of CW Turns from Min. to Max. setting 5
Valve Hex Size 22,2 mm
Valve Installation Torque 41 - 47 Nm
Locknut Hex Size 15 mm
Locknut Torque 9 - 10 Nm
Seal kit - Cartridge Buna: 990011007
Seal kit - Cartridge Polyurethane: 990011002
Seal kit - Cartridge Viton: 990011006
Model Weight 0.16 kg.
sunhydraulics.com/model/
RSDS
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2025 Sun Hydraulics 2 of 2
(L)(L)CONTROLCONTROL
LL Standard Screw Adjustment
CC Tamper Resistant - Factory Set
KK Handknob
(A)(A)ADJUSTMENT RANGEADJUSTMENT RANGE
AA 100 - 3000 psi (7 - 210 bar),
1000 psi (70 bar) Standard
Setting
BB 50 - 1500 psi (3,5 - 105 bar),
1000 psi (70 bar) Standard
Setting
CC 150 - 6000 psi (10,5 - 420 bar),
1000 psi (70 bar) Standard
Setting
NN 60 - 800 psi (4 - 55 bar), 400 psi
(28 bar) Standard Setting
QQ 60 - 400 psi (4 - 28 bar), 200 psi
(14 bar) Standard Setting
WW 100 - 4500 psi (7 - 315 bar),
1000 psi (70 bar) Standard
Setting
(N)(N)SEAL MATERIALSEAL MATERIAL
NN Buna-N
VV Viton
MATERIAL/COATINGMATERIAL/COATING
Standard Material/Coating
/AP/AP Stainless Steel, Passivated
/LH/LH Mild Steel, Zinc-Nickel
TECHNICAL FEATURESTECHNICAL FEATURES
Pilot flow continues to increase as the pressure at port 1 (inlet), relative to the pressure at port 3 (drain), rises above the valve
setting.
The main stage orifice is protected by a 150 micron stainless steel screen.
Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar).
Suitable for use in load holding applications.
Because the modulating occurs inside the cartridge these valves are immune to most of the problems associated with cavitation,
namely noise and manifold erosion.
Will accept maximum pressure at port 2; suitable for use in cross port relief circuits.
All 3 port sequence cartridges are physically and functionally interchangeable (i.e. same flow path, same cavity for a given frame
size).
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 CURVESPERFORMANCE CURVES
RELATED MODELSRELATED MODELS
RSDS8 Pilot-operated, balanced poppet sequence main stage with integral T-8A control cavity
Model Code Example: RSDSLANModel Code Example: RSDSLANCONFIGURATION OPTIONSCONFIGURATION OPTIONS
