SUN HYDRAULICS
RED-REL CART
PPDBLQN
$84.70 USD
- SUN HYDRAULICS
- Material:PPDBLQN
- Model:PPDB-LQN
- Summary:Cartridge
Quantity in stock: 14
***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Sun Hydraulics directly.***
The Sun Hydraulics PPDBLQN (PPDBLQN) is a pilot-operated, pressure reducing-relieving valve designed to manage high primary pressure at the inlet port 2 by reducing it to a consistent pressure at port 1, while also providing full-flow relief from port 1 to tank port 3. This three-port cartridge is interchangeable with others in its series, sharing the same flow path and cavity dimensions. It is recommended to use a full capacity return line for the tank port when using reducing-relieving cartridges. The valve allows reverse flow from reduced pressure port 1 to inlet port 2; however, this may close the main spool, so incorporating a check valve is advisable if reverse free flow is needed. The PPDBLQN model's maximum inlet pressure varies with adjustment ranges: up to 2000 psi for ranges D, E, N, and Q; up to 3000 psi for A, B, and H; and up to 5000 psi for C and W. It features stable performance with low hysteresis and flat pressure-flow characteristics but is not fast-acting; direct-acting valves are suggested for applications requiring quick response. The valve setting can be adjusted throughout its range unless a special setting is specified. EPDM seals are available for systems using phosphate ester fluids but should not be exposed to petroleum-based substances. The construction minimizes internal binding risks due to installation torque or machining variations. With a maximum operating pressure of 5000 psi and a capacity of 10 gpm, this model includes features such as an internal hex adjustment screw and locknut torque specifications.
The Sun Hydraulics PPDBLQN (PPDBLQN) is a pilot-operated, pressure reducing-relieving valve designed to manage high primary pressure at the inlet port 2 by reducing it to a consistent pressure at port 1, while also providing full-flow relief from port 1 to tank port 3. This three-port cartridge is interchangeable with others in its series, sharing the same flow path and cavity dimensions. It is recommended to use a full capacity return line for the tank port when using reducing-relieving cartridges. The valve allows reverse flow from reduced pressure port 1 to inlet port 2; however, this may close the main spool, so incorporating a check valve is advisable if reverse free flow is needed. The PPDBLQN model's maximum inlet pressure varies with adjustment ranges: up to 2000 psi for ranges D, E, N, and Q; up to 3000 psi for A, B, and H; and up to 5000 psi for C and W. It features stable performance with low hysteresis and flat pressure-flow characteristics but is not fast-acting; direct-acting valves are suggested for applications requiring quick response. The valve setting can be adjusted throughout its range unless a special setting is specified. EPDM seals are available for systems using phosphate ester fluids but should not be exposed to petroleum-based substances. The construction minimizes internal binding risks due to installation torque or machining variations. With a maximum operating pressure of 5000 psi and a capacity of 10 gpm, this model includes features such as an internal hex adjustment screw and locknut torque specifications.
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.
Cavity | T-11A |
Series | 1 |
Capacity | 10 gpm40 L/min. |
Factory Pressure Settings Established at | blocked control port (dead headed)blocked control port (dead headed) |
Maximum Operating Pressure | 5000 psi350 bar |
Control Pilot Flow | 7 - 10 in³/min.0,11 - 0,16 L/min. |
Adjustment - Number of Clockwise Turns to Increase Setting | 55 |
Valve Hex Size | 7/8 in.22,2 mm |
Valve Installation Torque | 30 - 35 lbf ft41 - 47 Nm |
Adjustment Screw Internal Hex Size | 5/32 in.4 mm |
Locknut Hex Size | 9/16 in.15 mm |
Locknut Torque | 80 - 90 lbf in.9 - 10 Nm |
Model Weight | .30 lb0,15 kg |
Seal kit - Cartridge | Viton: 990-011-006 |
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Additional Resources
- Series 4 PLUS Cartridges Offer Higher Flows with Lower Pressure Losses
- Sun Offers Zinc-Nickel Plating for Corrosion Resistance
- Sun Cartridges with EPDM Seals
- QuickDesign with SmartConnect Offers Drag-and-Drop Schematic Tool
- Sun Expands Corrosion-Resistant Solutions
- Manufacturing Sun Cartridge Cavities
- Reducing and Reducing/Relieving Valves
- Performance Data
- Sun's Floating Style Screw-In Cartridge
- Units of Measure, Settings, and Conversions
- Sun Model Code Explanation; 999-901-334
- Cavity Information (S-171) and Tooling
- Cartridges: Materials of Construction
- Fluid and Temperature Recommendations
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.