SUN HYDRAULICS
DCFFXXN
- SUN HYDRAULICS
- Material:DCFFXXN
- Model:4-way, 2-position, pilot-to-shift directional valve
- Summary:Cartridge
Due to extremely high demand, please call 888-905-7411 for availability
***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 DCFFXXN (DCFFXXN) is a two-position, 4-way directional cartridge valve characterized by its spring-offset, 6-port configuration. This model allows for customization through nine different spool options, catering to various hydraulic flow requirements. Each port on the DCFFXXN, including the pilot ports (port 5 and port 6), can handle up to 5000 psi or 350 bar. The capacity of these pilot-to-shift valves varies depending on the chosen spool type due to differences in flow forces, which are influenced by flow rate and pressure drop across the valve. The DCFFXXN features hardened spool and sleeve components that ensure low leakage rates and superior wear characteristics, contributing to the valve's reliability and longevity in demanding applications. It also employs Sun's floating style construction which helps prevent internal parts from binding\u2014a common issue that can arise from excessive installation torque or variations in cavity/cartridge machining. Additional technical specifications include a flow capacity ranging from 50 to 200 gpm (200 to 760 L/min), a minimum pilot pressure requirement of 125 psi (9 bar) for valve shifting, and maximum leakage at 110 SUS (24 cSt) noted at 2 in\u00b3/min at 1000 psi (30 cc/min at 70 bar). The valve's hex size is specified at 1-5/8 inches (41.3 mm), with an installation torque range between 350 and 375 lbf\u00b7ft (474 \u2013508 Nm). The model weighs approximately 3.90 lbs (1.75 kg). For maintenance or repair, a Viton seal kit (990064006) is available for this model.
The Sun Hydraulics DCFFXXN (DCFFXXN) is a two-position, 4-way directional cartridge valve characterized by its spring-offset, 6-port configuration. This model allows for customization through nine different spool options, catering to various hydraulic flow requirements. Each port on the DCFFXXN, including the pilot ports (port 5 and port 6), can handle up to 5000 psi or 350 bar. The capacity of these pilot-to-shift valves varies depending on the chosen spool type due to differences in flow forces, which are influenced by flow rate and pressure drop across the valve. The DCFFXXN features hardened spool and sleeve components that ensure low leakage rates and superior wear characteristics, contributing to the valve's reliability and longevity in demanding applications. It also employs Sun's floating style construction which helps prevent internal parts from binding\u2014a common issue that can arise from excessive installation torque or variations in cavity/cartridge machining. Additional technical specifications include a flow capacity ranging from 50 to 200 gpm (200 to 760 L/min), a minimum pilot pressure requirement of 125 psi (9 bar) for valve shifting, and maximum leakage at 110 SUS (24 cSt) noted at 2 in\u00b3/min at 1000 psi (30 cc/min at 70 bar). The valve's hex size is specified at 1-5/8 inches (41.3 mm), with an installation torque range between 350 and 375 lbf\u00b7ft (474 \u2013508 Nm). The model weighs approximately 3.90 lbs (1.75 kg). For maintenance or repair, a Viton seal kit (990064006) is available for this model.
Two-position, 4-way directional cartridges are spring-offset, 6-port directional valves that can be configured from a choice of 9 different spool options. The supply port is port 3 and all ports will accept 5000 psi (350 bar). Capacity for these pilot-to-shift valves is dependent on the spool type specified.
- All ports will accept 5000 psi (350 bar), including the x and y pilot ports (port 5 and port 6).
- The reason for the different capacities, or performance limits, for the different spool configurations are flow forces. Flow forces are proportional to flow and pressure drop. Typically, they resist the opening of a passage. Spool configurations that open passages as they spring center are the most susceptible. If the flow forces due to the flow and pressure conditions exceed the centering spring force the valve may not shift completely. Higher flows may be used at lower pressures.
- Leakage listed in technical data is for each path.
- The pilot ports, 5 and 6, are positively sealed from the work ports.
- Hardened spool and sleeve provide consistent and low spool leakage rates and excellent wear characteristics.
- 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-64A |
| Series | 4 |
| Capacity | 50 - 200 gpm200 - 760 L/min. |
| Minimum Pilot Pressure Required to Shift Valve | 125 psi9 bar |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 2 in³/min.@1000 psi30 cc/min.@70 bar |
| Pilot Volume Displacement | .42 in³6,9 cc |
| Valve Hex Size | 1 5/8 in.41,3 mm |
| Valve Installation Torque | 350 - 375 lbf ft474 - 508 Nm |
| Model Weight | 3.90 lb1,75 kg |
| Seal kit - Cartridge | Viton: 990-064-006 |
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