SUN HYDRAULICS
RPICQNN
$194.59 USD
- SUN HYDRAULICS
- Material:RPICQNN
- Model:RPIC-QNN
- Summary:Cartridge
Quantity in stock: 0
***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 RPICQNN (Material Number RPICQNN) is a pilot-operated, balanced piston relief cartridge designed to be a normally closed pressure regulating valve. It efficiently manages pressure by opening to tank port 2 when the inlet port 1 pressure reaches the set point, controlling flow to maintain desired pressure levels. This valve is characterized by its accuracy, low pressure rise versus flow, and smooth, quiet operation with moderate speed. It can handle maximum pressure at port 2 and is suitable for cross-port relief circuits, though spool leakage should be considered in such applications. The main stage orifice is safeguarded by a 150-micron stainless steel screen. This cartridge valve is not recommended for load-holding applications due to potential spool leakage. A backpressure on tank port 2 directly adds to the valve setting at a 1:1 ratio. The design allows interchangeability among all 2-port relief cartridges except pilot reliefs within the same frame size and flow path. Cartridges with EPDM seals are specifically for systems using phosphate ester fluids as petroleum-based fluids can damage these seals. The RPICQNN incorporates Sun's floating style construction to reduce internal binding risks due to excessive installation torque or machining variations. It features a cavity T-16A series with a capacity of up to 100 gpm (380 L/min) and operates at a maximum pressure of 5000 psi (350 bar). The response time is typically around 10 ms with minimal leakage rates under specified conditions. Adjustments are made via an internal hex screw, with specific torque requirements for installation and locknut adjustments. The model weighs approximately 1.20 lb (0.55 kg) and uses a Viton seal kit identified as part number 990016006 for maintenance needs.
The Sun Hydraulics RPICQNN (Material Number RPICQNN) is a pilot-operated, balanced piston relief cartridge designed to be a normally closed pressure regulating valve. It efficiently manages pressure by opening to tank port 2 when the inlet port 1 pressure reaches the set point, controlling flow to maintain desired pressure levels. This valve is characterized by its accuracy, low pressure rise versus flow, and smooth, quiet operation with moderate speed. It can handle maximum pressure at port 2 and is suitable for cross-port relief circuits, though spool leakage should be considered in such applications. The main stage orifice is safeguarded by a 150-micron stainless steel screen. This cartridge valve is not recommended for load-holding applications due to potential spool leakage. A backpressure on tank port 2 directly adds to the valve setting at a 1:1 ratio. The design allows interchangeability among all 2-port relief cartridges except pilot reliefs within the same frame size and flow path. Cartridges with EPDM seals are specifically for systems using phosphate ester fluids as petroleum-based fluids can damage these seals. The RPICQNN incorporates Sun's floating style construction to reduce internal binding risks due to excessive installation torque or machining variations. It features a cavity T-16A series with a capacity of up to 100 gpm (380 L/min) and operates at a maximum pressure of 5000 psi (350 bar). The response time is typically around 10 ms with minimal leakage rates under specified conditions. Adjustments are made via an internal hex screw, with specific torque requirements for installation and locknut adjustments. The model weighs approximately 1.20 lb (0.55 kg) and uses a Viton seal kit identified as part number 990016006 for maintenance needs.
Pilot-operated, balanced-piston relief cartridges are normally closed pressure regulating valves. When the pressure at the inlet (port 1) reaches the valve setting, the valve starts to open to tank (port 2), throttling flow to regulate the pressure. These valves are accurate, have low pressure rise vs. flow, they are smooth and quiet, and are moderately fast.
- Will accept maximum pressure at port 2; suitable for use in cross port relief circuits. If used in cross port relief circuits, consider spool leakage.
- Main stage orifice is protected by a 150 micron stainless steel screen.
- Not suitable for use in load holding applications due to spool leakage.
- Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
- All 2-port relief cartridges (except pilot reliefs) are physically and functionally interchangeable (same flow path, same cavity for a given frame size).
- 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.
- 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.
- Corrosion resistant cartridge valves are intended for use in corrosive environments and are identified by the model code suffix /AP for external stainless steel components, or /LH for external zinc-nickel plated components. See the CONFIGURATION section for all options. For further details, please see the Materials of Construction page located under TECH RESOURCES.
- 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-16A |
| Series | 3 |
| Capacity | 100 gpm380 L/min. |
| Factory Pressure Settings Established at | 4 gpm15 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Response Time - Typical | 10 ms10 ms |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 4 in³/min.@1000 psi65 cc/min.@70 bar |
| Adjustment - Number of Clockwise Turns to Increase Setting | 55 |
| Valve Hex Size | 1 1/4 in.31,8 mm |
| Valve Installation Torque | 150 - 160 lbf ft203 - 217 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 | 1.20 lb0,55 kg |
| Seal kit - Cartridge | Viton: 990-016-006 |
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Additional Resources
- Sun Offers Zinc-Nickel Plating for Corrosion Resistance
- Sun Cartridges with EPDM Seals
- Series 4 PLUS Cartridges Offer Higher Flows with Lower Pressure Losses
- Pilot-Operated, Balanced Poppet, Anti Shock Reliefs
- CavitySaver multi-function valves deliver single-cartridge solutions
- 'Soft' Relief Eliminates Pressure Spikes
- Tri-Grip Handknob Now Offered From Sun as a Standard Control Option
- QuickDesign with SmartConnect Offers Drag-and-Drop Schematic Tool
- Sun Introduces 'Hybrid' Valves
- CE/TÜV Certified Pressure Relief Valves
- Pressure Relief and Regulating Cartridge Valve Technical Tips
- Pilot Operated, Balanced Poppet Relief Valves
- Sun Expands Corrosion-Resistant Solutions
- Manufacturing Sun Cartridge Cavities
- Pressure Relief and Regulating Valves
- Sun Model Code Explanation; 999-901-334
- Cartridges: Materials of Construction
- Fluid and Temperature Recommendations
- Performance Data
- Sun's Floating Style Screw-In Cartridge
- Units of Measure, Settings, and Conversions
- Cavity Information (S-171) and Tooling