SUN HYDRAULICS
DKFR8HV
$178.70 USD
- SUN HYDRAULICS
- Material:DKFR8HV
- Model:DKFR-8HV
- 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 DKFR8HV (DKFR8HV) is a high-performance hydraulic valve designed for precise control in fluid power applications. This normally closed, balanced poppet switching element features an integral T8A control cavity, ensuring reliable operation under high-pressure conditions. The valve operates effectively with a maximum operating pressure of 5000 psi (350 bar) across ports 1 and 2, with both ports fully sealed from ports 3 and 4 to prevent leakage. Unique to this model is its balanced construction which allows for predictable switching when both a minimum pilot pressure of 400 psi (30 bar) is present and the pilot control valve is open. This makes it suitable for applications requiring precise fluid control and where backpressure at the drain port influences the required pilot pressure for operation. The valve's leakage rate is exceptionally low, typically less than 10 drops/min at 5000 psi, enhancing system efficiency. The DKFR8HV also incorporates Sun's floating style construction which minimizes internal parts binding caused by excessive installation torque or cavity/cartridge machining variations. This feature ensures long-term reliability and consistent performance. The valve includes options for pilot control cartridges that can be directly incorporated into the logic cartridge via the T8A cavity, available in various operational modes including electroproportional, solenoid, air pilot, and hydraulic pilot. With a flow capacity of up to 30 gpm (120 L/min), the DKFR8HV meets demanding hydraulic system requirements while offering robust construction and versatile installation options. This model weighs approximately 0.65 lb (0.30 kg) and requires specific installation torque settings to maintain optimal performance and safety standards during operation.
The Sun Hydraulics DKFR8HV (DKFR8HV) is a high-performance hydraulic valve designed for precise control in fluid power applications. This normally closed, balanced poppet switching element features an integral T8A control cavity, ensuring reliable operation under high-pressure conditions. The valve operates effectively with a maximum operating pressure of 5000 psi (350 bar) across ports 1 and 2, with both ports fully sealed from ports 3 and 4 to prevent leakage. Unique to this model is its balanced construction which allows for predictable switching when both a minimum pilot pressure of 400 psi (30 bar) is present and the pilot control valve is open. This makes it suitable for applications requiring precise fluid control and where backpressure at the drain port influences the required pilot pressure for operation. The valve's leakage rate is exceptionally low, typically less than 10 drops/min at 5000 psi, enhancing system efficiency. The DKFR8HV also incorporates Sun's floating style construction which minimizes internal parts binding caused by excessive installation torque or cavity/cartridge machining variations. This feature ensures long-term reliability and consistent performance. The valve includes options for pilot control cartridges that can be directly incorporated into the logic cartridge via the T8A cavity, available in various operational modes including electroproportional, solenoid, air pilot, and hydraulic pilot. With a flow capacity of up to 30 gpm (120 L/min), the DKFR8HV meets demanding hydraulic system requirements while offering robust construction and versatile installation options. This model weighs approximately 0.65 lb (0.30 kg) and requires specific installation torque settings to maintain optimal performance and safety standards during operation.
This is a normally closed, balanced poppet, switching element with an integral T-8A control cavity. With a 2-way valve in the closed position installed in the T-8A control cavity, the poppet remains closed. Opening the 2-way valve shifts the poppet to the open position, provided there is sufficient pressure at port 3.
- Unique balanced construction provides predictable switching with 5000 psi (350 bar) at port 1 and port 2. Switching will only occur when both a minimum pilot pressure of 400 psi (30 bar) is present and pilot control valve is open.
- These valves are hydraulically balanced between port 1 and port 2.
- 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 reseat when the pilot pressure falls below 145 psi (10 bar).
- NOTE: With the -8 control option, the main stage valve should first be installed to the correct torque value. The T-8A pilot control valve should then be installed into the main stage valve to its required torque value.
- The -8 control option allows the pilot control valve to be incorporated directly into the end of the logic cartridge via the T-8A cavity. These pilot control cartridges are sold separately and include electro-proportional, solenoid, air pilot, and hydraulic pilot operation. See Pilot Control Cartridges.
- 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 |
| Control Pilot Flow | See Performance DataSee Performance Data |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 10 drops/min.@5000 psi0,7 cc/min.@350 bar |
| Pilot Control Cavity | T-8AT-8A |
| Pilot Control Valve Installation Torque | 20 - 25 lbf ft27 - 33 Nm |
| Pilot Control Valve Hex Size | 7/8 in.22,2 mm |
| Valve Hex Size | 1 1/8 in.28,6 mm |
| Valve Installation Torque | 45 - 50 lbf ft61 - 68 Nm |
| Model Weight | .65 lb0,30 kg |
| Seal kit - Cartridge | Viton: 990-022-006 |
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