SUN HYDRAULICS
DNDMLUN
$139.49 USD
- SUN HYDRAULICS
- Material:DNDMLUN
- Model:DNDM-LUN
- 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 DNDMLUN (Material Number: DNDMLUN) is a manually operated, 2-position, 4-way directional cartridge valve designed for controlling the direction of flow in hydraulic circuits. This direct-acting, balanced spool valve features Sun's Twist-Lock manual override mechanism, making it suitable for intermittent and infrequent use. The valve offers three control options: momentary-twist (T), detent-lock (L), and dual-operation (D). The momentary-twist option allows the operator to shift the valve temporarily by twisting the knob clockwise; upon release, it returns to its normal position. The detent-lock option lets the operator mechanically detent the valve by twisting counterclockwise, maintaining this position until twisted clockwise again. However, this is not intended for load holding but rather temporary shifting. The dual-operation combines both functionalities. Designed for hand operation only, modifications such as adding levers are not recommended. The DNDMLUN incorporates Sun's floating style construction to reduce internal binding due to installation torque or machining variations. It fits into a T-31A cavity and belongs to Series 1 with a capacity of 10 gpm (40 L/min). It can withstand a maximum operating pressure of 5000 psi (350 bar) and has a maximum leakage rate of 10 in\u00b3/min at 3000 psi (160 cc/min at 210 bar). Operating torque is rated at 10 lbf-in (1.2 Nm), with an installation torque between 30-35 lbf-ft (41-47 Nm). For systems using phosphate ester fluids, EPDM seals are available; however, exposure to petroleum-based substances can damage these seals. A Viton seal kit is also available under part number 990431006.
The Sun Hydraulics DNDMLUN (Material Number: DNDMLUN) is a manually operated, 2-position, 4-way directional cartridge valve designed for controlling the direction of flow in hydraulic circuits. This direct-acting, balanced spool valve features Sun's Twist-Lock manual override mechanism, making it suitable for intermittent and infrequent use. The valve offers three control options: momentary-twist (T), detent-lock (L), and dual-operation (D). The momentary-twist option allows the operator to shift the valve temporarily by twisting the knob clockwise; upon release, it returns to its normal position. The detent-lock option lets the operator mechanically detent the valve by twisting counterclockwise, maintaining this position until twisted clockwise again. However, this is not intended for load holding but rather temporary shifting. The dual-operation combines both functionalities. Designed for hand operation only, modifications such as adding levers are not recommended. The DNDMLUN incorporates Sun's floating style construction to reduce internal binding due to installation torque or machining variations. It fits into a T-31A cavity and belongs to Series 1 with a capacity of 10 gpm (40 L/min). It can withstand a maximum operating pressure of 5000 psi (350 bar) and has a maximum leakage rate of 10 in\u00b3/min at 3000 psi (160 cc/min at 210 bar). Operating torque is rated at 10 lbf-in (1.2 Nm), with an installation torque between 30-35 lbf-ft (41-47 Nm). For systems using phosphate ester fluids, EPDM seals are available; however, exposure to petroleum-based substances can damage these seals. A Viton seal kit is also available under part number 990431006.
This manually operated, 2-position, 4-way directional cartridge is a direct-acting, balanced spool valve used to control the direction of flow in a hydraulic circuit. Manual operation is achieved via Sun's Twist/Lock manual override mechanism and is designed for intermittent (infrequent) use only.
- This valve is designed for intermittent use such as a manual override. The manual control assembly has a mechanical life expectancy of approximately 7,000 cycles.
- The momentary/twist control option "T" allows the operator to momentarily shift the valve by twisting the knob clockwise and releasing. Once released, the valve returns to its normal position.
- The detent/lock control option "L" allows the operator to shift the valve into a mechanically detented position by twisting the knob counter-clockwise. This detented position will be maintained until the operator twists the knob clockwise and allows the valve to return to its normal position. Please note that the detented position is not intended for load holding applications but for temporary shifting only.
- The dual-operation control option "D" allows the operator to either shift the valve momentarily by twisting the knob clockwise or shift it into a mechanically detented postion by twisting counter-clockwise. Please note that the detented position is not intended for load holding applications but for temporary shifting only.
- The control on this valve is meant to be operated by a person's hand. The control should not be modified, for instance fastening a lever to the knob. Under no circumstances should the control be operated by other mechanical devices.
- 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.
- 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-31A |
| Series | 1 |
| Capacity | 10 gpm40 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 10 in³/min.@3000 psi160 cc/min.@210 bar |
| Operating Torque | 10 lbf in.1,2 Nm |
| Valve Hex Size | 7/8 in.22,2 mm |
| Valve Installation Torque | 30 - 35 lbf ft41 - 47 Nm |
| Seal kit - Cartridge | Viton: 990-431-006 |
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