New old stock.
https://www.sunhydraulics.com/model/PPDB/LAN
Pilot-operated, pressure reducing/relieving valves reduce a high
primary pressure at the inlet (port 2) to a constant reduced pressure at
port 1, with a full-flow relief function from port 1 to tank (port 3).
- 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.
- 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.
- Pilot operated valves exhibit exceptionally flat pressure/flow characteristics, are very stable and have low hysteresis.
- Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar).
- Pilot operated reducing, reducing/relieving valves by nature are
not fast acting valves. For superior dynamic response, consider direct
acting valves.
- W and Y controls (where applicable) can be specified with or
without a special setting. When no special setting is specified, the
valve is adjustable throughout its full range using the W or Y control.
When a special setting is specified, this setting represents the maximum
setting of the valve.
- 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.
- 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.
I have thousands more bearings and other industrial / hydraulic / pneumatic items I am trying to clear, if you require something similar or more than the quantity listed, please send me a message as I might have it in stock or know someone who can supply it.