SUN HYDRAULICS
DODR8HV
$136.51 USD
- SUN HYDRAULICS
- Material:DODR8HV
- Model:DODR-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 DODR8HV (DODR8HV) is a normally open, balanced poppet switching element featuring an integral T8A control cavity. This advanced hydraulic component remains open with a 2-way valve in the closed position installed in the T8A control cavity. When the 2-way valve opens, and sufficient pressure is present at port 3, the poppet shifts to a closed position. The valve's unique balanced construction ensures predictable switching capabilities at pressures up to 5000 psi (350 bar) at ports 1 and 2, requiring a minimum pilot pressure of 400 psi (28 bar) for operation. The valve reopens when pilot pressure drops below 145 psi (10 bar). The DODR8HV is hydraulically balanced between ports 1 and 2, with both ports fully sealed from ports 3 and 4, ensuring positive sealing and minimal leakage\u2014less than 10 drops/min or approximately 0.7 cc/min at maximum pressure. The design incorporates Sun\u2019s floating style construction to minimize binding risks due to installation torque or machining variations. This model supports various pilot control options, including electroproportional, solenoid, air pilot, and hydraulic pilot operations via the T8A cavity. The valve fits into a T21A cavity with a series capacity of up to 15 gpm (60 L/min). Proper installation requires specific torque values for both the main stage valve (30-35 lbf ft or 41-47 Nm) and the pilot control valve (20-25 lbf ft or 27-34 Nm), both utilizing a hex size of .78 inches (22.2 mm). For maintenance or replacement purposes, Viton seal kits are available under part number 990021006.
The Sun Hydraulics DODR8HV (DODR8HV) is a normally open, balanced poppet switching element featuring an integral T8A control cavity. This advanced hydraulic component remains open with a 2-way valve in the closed position installed in the T8A control cavity. When the 2-way valve opens, and sufficient pressure is present at port 3, the poppet shifts to a closed position. The valve's unique balanced construction ensures predictable switching capabilities at pressures up to 5000 psi (350 bar) at ports 1 and 2, requiring a minimum pilot pressure of 400 psi (28 bar) for operation. The valve reopens when pilot pressure drops below 145 psi (10 bar). The DODR8HV is hydraulically balanced between ports 1 and 2, with both ports fully sealed from ports 3 and 4, ensuring positive sealing and minimal leakage\u2014less than 10 drops/min or approximately 0.7 cc/min at maximum pressure. The design incorporates Sun\u2019s floating style construction to minimize binding risks due to installation torque or machining variations. This model supports various pilot control options, including electroproportional, solenoid, air pilot, and hydraulic pilot operations via the T8A cavity. The valve fits into a T21A cavity with a series capacity of up to 15 gpm (60 L/min). Proper installation requires specific torque values for both the main stage valve (30-35 lbf ft or 41-47 Nm) and the pilot control valve (20-25 lbf ft or 27-34 Nm), both utilizing a hex size of .78 inches (22.2 mm). For maintenance or replacement purposes, Viton seal kits are available under part number 990021006.
This is a normally open, 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 open. Opening the 2-way valve shifts the poppet to the closed 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.
- Valve will open when the pilot pressure falls below 145 psi (10 bar).
- 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).
- 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-21A |
| Series | 1 |
| Capacity | 15 gpm60 L/min. |
| Minimum Pilot Pressure Required to Shift Valve | 400 psi28 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 - 34 Nm |
| Pilot Control Valve Hex Size | 7/8 in.22,2 mm |
| Valve Hex Size | 7/8 in.22,2 mm |
| Valve Installation Torque | 30 - 35 lbf ft41 - 47 Nm |
| Model Weight | .35 lb0,15 kg |
| Seal kit - Cartridge | Viton: 990-021-006 |
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