SUN HYDRAULICS
DOFSXHV
$167.88 USD
- SUN HYDRAULICS
- Material:DOFSXHV
- Model:DOFS-XHV
- 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 DOFSXHV (DOFSXHV) is a normally open, balanced poppet switching element designed for precise hydraulic control. It operates by using pilot pressure at port 3 to shift the valve into the closed position, with a minimum required pilot pressure of 300 psi (20 bar). This valve features unique balanced construction that supports predictable switching at high pressures of up to 5000 psi (350 bar) at both ports 1 and 2, provided the external drain is open. The design ensures that port 1 and port 2 are completely sealed from ports 3 and 4, with positive sealing on ports 3 and 4. Backpressure at the drain port directly affects the pilot pressure needed for reliable operation. The leakage rate between ports is minimal, typically less than 10 drops per minute at maximum pressure. The valve reopens when pilot pressure drops below 145 psi (10 bar). It's important to note that cartridges with EPDM seals should only be used in systems with phosphate ester fluids, as exposure to petroleum-based substances can damage these seals. This hydraulically balanced valve fits into a T22A cavity and belongs to Series 2, offering a capacity of up to 30 gpm (120 L/min). It incorporates Sun's floating style construction, which minimizes internal binding due to excessive installation torque or machining variations in the cavity or cartridge. With an installation torque range of 45\u201350 lbf ft (61\u201368 Nm), this robust component is suitable for various high-pressure applications requiring reliable switching performance.
The Sun Hydraulics DOFSXHV (DOFSXHV) is a normally open, balanced poppet switching element designed for precise hydraulic control. It operates by using pilot pressure at port 3 to shift the valve into the closed position, with a minimum required pilot pressure of 300 psi (20 bar). This valve features unique balanced construction that supports predictable switching at high pressures of up to 5000 psi (350 bar) at both ports 1 and 2, provided the external drain is open. The design ensures that port 1 and port 2 are completely sealed from ports 3 and 4, with positive sealing on ports 3 and 4. Backpressure at the drain port directly affects the pilot pressure needed for reliable operation. The leakage rate between ports is minimal, typically less than 10 drops per minute at maximum pressure. The valve reopens when pilot pressure drops below 145 psi (10 bar). It's important to note that cartridges with EPDM seals should only be used in systems with phosphate ester fluids, as exposure to petroleum-based substances can damage these seals. This hydraulically balanced valve fits into a T22A cavity and belongs to Series 2, offering a capacity of up to 30 gpm (120 L/min). It incorporates Sun's floating style construction, which minimizes internal binding due to excessive installation torque or machining variations in the cavity or cartridge. With an installation torque range of 45\u201350 lbf ft (61\u201368 Nm), this robust component is suitable for various high-pressure applications requiring reliable switching performance.
This is a normally open, balanced poppet, switching element. Pilot pressure at port 3 shifts the valve to the closed position.
- Unique balanced construction provides predictable switching with 5000 psi (350 bar) at both ports 1 and 2, with the external drain open and a minimum pilot pressure of 300 psi (20 bar).
- Port 1 and port 2 are fully sealed from port 3 and port 4. Ports 3 and 4 are positively sealed.
- Any backpressure at the drain port is directly additive to the required pilot pressure for reliable operation.
- Leakage rate between port 1 and port 2 is very low, typically less than 10 drops/min. at 5000 psi (0,7 cc/min at 350 bar).
- Valve will open when the pilot pressure falls below 145 psi (10 bar).
- Cartridges with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage the seals.
- These valves are hydraulically balanced between port 1 and port 2.
- All ports will accept 5000 psi (350 bar).
- 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-22A |
| Series | 2 |
| Capacity | 30 gpm120 L/min. |
| Minimum Pilot Pressure Required to Shift Valve | 300 psi20 bar |
| Maximum Operating Pressure | 5000 psi350 bar |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 10 drops/min.@5000 psi0,7 cc/min.@350 bar |
| Pilot Volume Displacement | .02 in³0,33 cc |
| Valve Hex Size | 1 1/8 in.28,6 mm |
| Valve Installation Torque | 45 - 50 lbf ft61 - 68 Nm |
| Seal kit - Cartridge | Viton: 990-022-006 |
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