SUN HYDRAULICS
RPKCMDV
$394.74 USD
- SUN HYDRAULICS
- Material:RPKCMDV
- Model:RPKC-MDV
- 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 RPKCMDV (RPKCMDV) is a pilot-operated, balanced-piston relief cartridge designed for precise pressure regulation in hydraulic systems. This normally closed valve opens to the tank port when the inlet pressure reaches a pre-set level, effectively throttling flow to maintain desired pressure levels. Known for its accuracy and smooth operation, this valve features a low-pressure rise versus flow and operates quietly with moderate speed. It can handle maximum pressure at port 2, making it suitable for cross-port relief circuits, although spool leakage should be considered in such applications. The main stage orifice of the RPKCMDV is protected by a 150-micron stainless steel screen, ensuring durability and reliability. However, it is not recommended for load-holding applications due to potential spool leakage. The valve\u2019s setting is influenced by back pressure on the tank port at a 1:1 ratio. This model offers physical and functional interchangeability with all two-port relief cartridges of the same frame size, excluding pilot reliefs. Cartridges with EPDM seals are compatible with phosphate ester fluids but may be damaged by petroleum-based substances. The valve's W and Y controls allow full-range adjustability unless a special setting is specified. For corrosive environments, corrosion-resistant options are available under model code suffixes AP or LH. Featuring Sun's floating-style construction, this valve minimizes internal binding risks due to installation torque or machining variations. It fits into cavity T-18A Series 4 and supports capacities up to 200 gpm (760 L/min). With a maximum operating pressure of 5000 psi (350 bar), this valve has a typical response time of 10 ms and minimal leakage rates under specific conditions. The adjustment mechanism includes five clockwise turns to increase settings, with specific torque requirements for installation and adjustment components.
The Sun Hydraulics RPKCMDV (RPKCMDV) is a pilot-operated, balanced-piston relief cartridge designed for precise pressure regulation in hydraulic systems. This normally closed valve opens to the tank port when the inlet pressure reaches a pre-set level, effectively throttling flow to maintain desired pressure levels. Known for its accuracy and smooth operation, this valve features a low-pressure rise versus flow and operates quietly with moderate speed. It can handle maximum pressure at port 2, making it suitable for cross-port relief circuits, although spool leakage should be considered in such applications. The main stage orifice of the RPKCMDV is protected by a 150-micron stainless steel screen, ensuring durability and reliability. However, it is not recommended for load-holding applications due to potential spool leakage. The valve\u2019s setting is influenced by back pressure on the tank port at a 1:1 ratio. This model offers physical and functional interchangeability with all two-port relief cartridges of the same frame size, excluding pilot reliefs. Cartridges with EPDM seals are compatible with phosphate ester fluids but may be damaged by petroleum-based substances. The valve's W and Y controls allow full-range adjustability unless a special setting is specified. For corrosive environments, corrosion-resistant options are available under model code suffixes AP or LH. Featuring Sun's floating-style construction, this valve minimizes internal binding risks due to installation torque or machining variations. It fits into cavity T-18A Series 4 and supports capacities up to 200 gpm (760 L/min). With a maximum operating pressure of 5000 psi (350 bar), this valve has a typical response time of 10 ms and minimal leakage rates under specific conditions. The adjustment mechanism includes five clockwise turns to increase settings, with specific torque requirements for installation and adjustment components.
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-18A |
| Series | 4 |
| Capacity | 200 gpm760 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) | 5 in³/min.@1000 psi80 cc/min.@70 bar |
| Adjustment - Number of Clockwise Turns to Increase Setting | 55 |
| Valve Hex Size | 1 5/8 in.41,3 mm |
| Valve Installation Torque | 350 - 375 lbf ft474 - 508 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 | 2.50 lb1,15 kg |
| Seal kit - Cartridge | Viton: 990-018-006 |
Show FAQ
Additional Resources
- 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
- 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
- Manufacturing Sun Cartridge Cavities
- Pressure Relief and Regulating Valves
- Sun's Floating Style Screw-In Cartridge
- Units of Measure, Settings, and Conversions
- Cavity Information (S-171) and Tooling
- Sun Model Code Explanation; 999-901-334
- Cartridges: Materials of Construction
- Fluid and Temperature Recommendations
- Performance Data