SUN HYDRAULICS
DOJR8HV
$534.60 USD
Tags:
- SUN HYDRAULICS
- Material:DOJR8HV
- Model:DOJR-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 DOJR8HV (DOJR8HV) is a normally open, balanced poppet switching element featuring an integral T8A control cavity. This component remains open when a 2-way valve in the closed position is installed in the T8A control cavity. Upon opening the 2-way valve and ensuring sufficient pressure at port 3, the poppet shifts to a closed position. The valve's unique balanced construction facilitates predictable switching at pressures up to 5000 psi (350 bar) at ports 1 and 2. Switching occurs only when both a minimum pilot pressure of 400 psi (30 bar) is present and the pilot control valve is open. Designed for hydraulic balance, ports 1 and 2 are fully sealed from ports 3 and 4, with positive sealing on ports 3 and 4 as well. Backpressure at the drain port directly adds to the required pilot pressure for reliable operation, while leakage between port 1 and port 2 remains minimal, typically less than ten drops per minute at maximum pressure. The product incorporates Sun's floating style construction to minimize potential binding of internal parts due to excessive installation torque or machining variations in cavities or cartridges. The DOJR8HV has a capacity of up to 120 gpm (480 L/min) and requires a minimum pilot pressure of 300 psi (20 bar) for shifting. All ports can handle up to the maximum operating pressure of 5000 psi (350 bar). The design includes options for incorporating various pilot control cartridges directly into the logic cartridge via the T8A cavity, which are sold separately. These options include electroproportional, solenoid, air pilot, and hydraulic pilot operations. The overall model weight is approximately 3.50 lb (1.60 kg), with specific torque requirements for installation outlined in its specifications.
The Sun Hydraulics DOJR8HV (DOJR8HV) is a normally open, balanced poppet switching element featuring an integral T8A control cavity. This component remains open when a 2-way valve in the closed position is installed in the T8A control cavity. Upon opening the 2-way valve and ensuring sufficient pressure at port 3, the poppet shifts to a closed position. The valve's unique balanced construction facilitates predictable switching at pressures up to 5000 psi (350 bar) at ports 1 and 2. Switching occurs only when both a minimum pilot pressure of 400 psi (30 bar) is present and the pilot control valve is open. Designed for hydraulic balance, ports 1 and 2 are fully sealed from ports 3 and 4, with positive sealing on ports 3 and 4 as well. Backpressure at the drain port directly adds to the required pilot pressure for reliable operation, while leakage between port 1 and port 2 remains minimal, typically less than ten drops per minute at maximum pressure. The product incorporates Sun's floating style construction to minimize potential binding of internal parts due to excessive installation torque or machining variations in cavities or cartridges. The DOJR8HV has a capacity of up to 120 gpm (480 L/min) and requires a minimum pilot pressure of 300 psi (20 bar) for shifting. All ports can handle up to the maximum operating pressure of 5000 psi (350 bar). The design includes options for incorporating various pilot control cartridges directly into the logic cartridge via the T8A cavity, which are sold separately. These options include electroproportional, solenoid, air pilot, and hydraulic pilot operations. The overall model weight is approximately 3.50 lb (1.60 kg), with specific torque requirements for installation outlined in its specifications.
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.
- 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.
- Valve will open when the pilot pressure falls below 145 psi (10 bar).
- 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-24A |
| Series | 4 |
| Capacity | 120 gpm480 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 - 34 Nm |
| Pilot Control Valve Hex Size | 7/8 in.22,2 mm |
| Valve Hex Size | 1 5/8 in.41,3 mm |
| Valve Installation Torque | 350 - 375 lbf ft475 - 508 Nm |
| Model Weight | 3.50 lb1,60 kg |
| Seal kit - Cartridge | Viton: 990-024-006 |
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