SUN HYDRAULICS
DSFDXEN
$394.40 USD
Tags:
- SUN HYDRAULICS
- Material:DSFDXEN
- Model:DSFD-XEN
- 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 DSFDXEN (DSFDXEN) is a lowside hot oil shuttle cartridge designed to manage hot oil diversion in closed loop systems. This valve features a spring-centered mechanism that blocks all ports when work ports 2 and 4 are at equal pressures. Upon detecting a higher pressure at either port, it connects the opposite work port to the common port, effectively managing flow transients downstream of the hot oil circuit. The valve ensures stability by centering quickly and remaining centered until a low side is established, opening in a controlled manner after a delay of approximately two seconds. It incorporates a hydraulic stop to prevent mechanical impact, ensuring durability and reducing potential internal damage. This feature also allows for verification of the hot oil relief setting with the transmission in neutral. With a capacity of 40 gpm (160 L/min) and maximum operating pressure of 5000 psi (350 bar), it fits into a T-33A cavity and uses Sun's floating style construction to minimize binding risks due to installation torque or machining variations. The valve has dimensions including a hex size of 1-1/4 inches (31.8 mm) and requires an installation torque between 150-160 lbf ft (203-217 Nm). The model weight is approximately 1.40 lb (0.65 kg), and it uses Viton seal kits for optimal performance under varying conditions.
The Sun Hydraulics DSFDXEN (DSFDXEN) is a lowside hot oil shuttle cartridge designed to manage hot oil diversion in closed loop systems. This valve features a spring-centered mechanism that blocks all ports when work ports 2 and 4 are at equal pressures. Upon detecting a higher pressure at either port, it connects the opposite work port to the common port, effectively managing flow transients downstream of the hot oil circuit. The valve ensures stability by centering quickly and remaining centered until a low side is established, opening in a controlled manner after a delay of approximately two seconds. It incorporates a hydraulic stop to prevent mechanical impact, ensuring durability and reducing potential internal damage. This feature also allows for verification of the hot oil relief setting with the transmission in neutral. With a capacity of 40 gpm (160 L/min) and maximum operating pressure of 5000 psi (350 bar), it fits into a T-33A cavity and uses Sun's floating style construction to minimize binding risks due to installation torque or machining variations. The valve has dimensions including a hex size of 1-1/4 inches (31.8 mm) and requires an installation torque between 150-160 lbf ft (203-217 Nm). The model weight is approximately 1.40 lb (0.65 kg), and it uses Viton seal kits for optimal performance under varying conditions.
Low-side (hot oil) shuttle cartridges allow hot oil to be diverted from the low pressure side of a closed loop system. When both work ports (ports 2 and 4) are at equal pressures the valve is spring-centered to an all-ports-blocked position. When one of the work ports (port 2 or 4) sees a higher pressure the opposite work port is connected to the common port (port 3). The delay shift shuttle prevents flow transients downstream of the hot oil circuit.
- The valve is designed to center quickly and stay centered until conditions are correct for it to open as explained in the next 2 technical features.
- The valve prevents flow transients downstream of the hot oil relief in 2 ways. The shuttle stays centered until one side of the transmission actually becomes the low side. Once a low side has been established the valve opens in a controlled fashion after a delay of about 2 seconds.
- The valve centers and remains centered as long as pressures at ports 2 and 4 are both at or above a value equal to 300 psi (20 bar) plus the setting of the hot oil relief. For instance, if the hot oil relief is set at 200 psi (14 bar) the shuttle will not open unless one side of the transmission drops below 500 psi (34 bar).
- The spool incorporates a hydraulic stop that eliminates mechanical impact and therefore the potential for internal damage.
- The hydraulic stop results in a small pilot flow from the high side work port (port 2 or 4) to the common port (port 3).
- A unique feature due to the hydraulic stop is that the hot oil relief setting can be confirmed with the transmission in neutral.
- Although this valve goes into a 4-port cavity, the nose (port 1) is not used.
- 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-33A |
| Series | 3 |
| Capacity | 40 gpm160 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Pilot Flow | 23 in³/min.0,38 L/min. |
| Valve Hex Size | 1 1/4 in.31,8 mm |
| Valve Installation Torque | 150 - 160 lbf ft203 - 217 Nm |
| Model Weight | 1.40 lb0,65 kg |
| Seal kit - Cartridge | Viton: 990-033-006 |
Show FAQ