MODEL
PBDB
Pilot operated, pressure reducing valve
SERIES 1 / CAPACITY: 40 L/min. / CAVITY: T-11A
Pilot-operated, pressure reducing valves reduce a high primary pressure at the inlet (port 2) to a constant reduced
pressure at port 1, allowing circuits with multiple pressure requirements to be operated using a single pump.
TECHNICAL DATA
Factory Pressure Settings Established at blocked control port (dead headed)
Maximum Operating Pressure 350 bar
Control Pilot Flow 0,11 - 0,16 L/min.
Adjustment - Number of Clockwise Turns to Increase Setting 5
Locknut Hex Size 15 mm
Locknut Torque 9 - 10 Nm
Seal kit - Cartridge Buna: 990-011-007
Seal kit - Cartridge Polyurethane: 990-011-002
Seal kit - Cartridge Viton: 990-011-006
(L)CONTROL
L Standard Screw Adjustment
C Tamper Resistant - Factory Set
K Handknob
W Hex Wrench Adjustment
Y Tri-Grip Handknob
(A)ADJUSTMENT RANGE
A 100 - 3000 psi (7 - 210 bar), 200 psi (14
bar) Standard Setting
W 150 - 4500 psi (10,5 - 315 bar), 200 psi
(14 bar) Standard Setting
B 50 - 1500 psi (3,5 - 105 bar), 200 psi (14
bar) Standard Setting
N 60 - 800 psi (4 - 55 bar), 200 psi (14 bar)
Standard Setting
Q 60 - 400 psi (4 - 28 bar), 200 psi (14 bar)
Standard Setting
(N)SEAL MATERIAL
N Buna-N
E EPDM
V Viton
MATERIAL/COATING
Standard Material/Coating
/AP Stainless Steel, Passivated
/LH Mild Steel, Zinc-Nickel
snhy.com/
PBDB
TECHNICAL FEATURES
All three-port pressure reducing and reducing/relieving cartridges are physically interchangeable (i.e. same flow path, same cavity for a given frame size). When
considering mounting configurations, it is sometimes recommended that a full capacity return line (port 3) be used with reducing/relieving cartridges.
Full reverse flow from reduced pressure (port 1) to inlet (port 2) may cause the main spool to close. If reverse free flow is required in the circuit, consider adding a
separate check valve to the circuit.
If pilot flow consumption is critical, consider using direct acting reducing/relieving valves.
Main stage orifice is protected by a 150 micron stainless steel screen.
Recommended maximum inlet pressure is determined by the adjustment range. Ranges D, E, N, and Q are tested with a 2000 psi (140 bar) maximum differential
between inlet and reduced pressure. Ranges A, B, and H are tested with a 3000 psi (210 bar) maximum differential between inlet and reduced pressure. Ranges
C and W are tested with 5000 psi (350 bar) of inlet pressure.
NOTES
Maximum pressure differentials for spring ranges: A and B are 3000 psi (210 bar) N and Q are 2000 psi (140 bar) W is 5000 psi (350 bar)inlet pressure
For Series 1 cartridges configured with an O control (panel mount handknob), a .75 in. (19 mm) diameter hole is required in the panel.
Model Code Example: PBDBLANCONFIGURATION OPTIONS