SUN HYDRAULICS
DNDYTXN728
$304.29 USD
- SUN HYDRAULICS
- Material:DNDYTXN728
- Model:DNDY-TXN@728
- 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 DNDYTXN728 (DNDYTXN728) is a solenoid-operated 6-way, 2-position cartridge valve designed for selecting between two separate hydraulic circuits. In its de-energized state, it connects ports P and T to the first circuit, and when energized, it switches to connect P and T to the second circuit. This direct-acting valve does not require any minimum hydraulic pressure for operation and is fatigue-rated for service up to 5000 psi (350 bar). The spool valve's unique magnetic design ensures high efficiency with significant spool actuating force per watt, providing reliable valve shifting. It features a wet armature design that allows the working fluid to surround the armature, which can impact performance if the coil is energized for extended periods. Various coil termination and voltage options are available, including configurations with surge protection. The manual override options include choices like no manual override or models with temporary actuation detent mechanisms, although these are incompatible with weatherized coils. The cartridge incorporates Sun's floating style construction to minimize internal part binding due to excessive installation torque or machining variations. It fits into a T-61A cavity from Series 1 and has a capacity of 5 gpm (20 L/min). The typical response time is around 50 ms, with maximum leakage at 5 in\u00b3/min (80 cc/min) under specified conditions. It can handle switching frequencies of up to 15,000 cycles per hour. Manual override requires a force of approximately 5 lbs/1000 psi at Port 1, with an override stroke of .10 inches (2.5 mm). The solenoid tube diameter measures .75 inches (19 mm), while the valve hex size is .78 inches (22.2 mm). Installation torque ranges from 30 to 35 lbf\u00b7ft (41 to 47 Nm), and the model weighs approximately .60 lb (.30 kg). Seal kits for both cartridge and coil components are available using Viton material numbers: 990461006 for cartridges and 990770006 for coils.
The Sun Hydraulics DNDYTXN728 (DNDYTXN728) is a solenoid-operated 6-way, 2-position cartridge valve designed for selecting between two separate hydraulic circuits. In its de-energized state, it connects ports P and T to the first circuit, and when energized, it switches to connect P and T to the second circuit. This direct-acting valve does not require any minimum hydraulic pressure for operation and is fatigue-rated for service up to 5000 psi (350 bar). The spool valve's unique magnetic design ensures high efficiency with significant spool actuating force per watt, providing reliable valve shifting. It features a wet armature design that allows the working fluid to surround the armature, which can impact performance if the coil is energized for extended periods. Various coil termination and voltage options are available, including configurations with surge protection. The manual override options include choices like no manual override or models with temporary actuation detent mechanisms, although these are incompatible with weatherized coils. The cartridge incorporates Sun's floating style construction to minimize internal part binding due to excessive installation torque or machining variations. It fits into a T-61A cavity from Series 1 and has a capacity of 5 gpm (20 L/min). The typical response time is around 50 ms, with maximum leakage at 5 in\u00b3/min (80 cc/min) under specified conditions. It can handle switching frequencies of up to 15,000 cycles per hour. Manual override requires a force of approximately 5 lbs/1000 psi at Port 1, with an override stroke of .10 inches (2.5 mm). The solenoid tube diameter measures .75 inches (19 mm), while the valve hex size is .78 inches (22.2 mm). Installation torque ranges from 30 to 35 lbf\u00b7ft (41 to 47 Nm), and the model weighs approximately .60 lb (.30 kg). Seal kits for both cartridge and coil components are available using Viton material numbers: 990461006 for cartridges and 990770006 for coils.
This solenoid-operated 6-way, 2-position cartridge is a direct-acting, balanced spool valve. The typical use for this valve is to select between two separate circuits. The de-energized condition connects P and T to the first circuit and when energized connects P and T to the second circuit.
- The solenoid tube assembly is fatigue rated for 5000 psi (350 bar) service.
- This valve is direct actuated and requires no minimum hydraulic pressure for operation.
- On models equipped with the D or L control, the detent mechanism in the manual override is meant for temporary actuation. The D, L and T manual control assembly has a mechanical life expectancy of approximately 7,000 cycles.
- This cartridge has several manual override choices, including no manual override. See the CONFIGURATION section. Please note: Manual override functionality is not compatible with weatherized coils.
- This valve utilizes a wet armature design. This means that the working fluid surrounds the armature and is exposed to the heat generated by the coil. This can be a factor if the coil is energized for long periods of time. Some fluids, notably water/glycol mixtures, break down at these temperatures over time and form varnishes that will affect the function of the cartridge.
- A wide variety of coil termination and voltage options are available, with and without surge protection. See the CONFIGURATION section.
- The solenoid's unique magnetic design results in a high efficiency solenoid, yielding high spool actuating force per Watt expended, leading to reliable valve shifting.
- Coils are interchangeable with other Sun Series 1 solenoid products and can be mounted on the tube in either direction.
- Coil connector options offer ratings up to IP69K. See individual coil product pages for details. Additional weatherized coils and kits are available for more complete environmental protection.
- 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-61A |
| Series | 1 |
| Capacity | 5 gpm20 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Response Time - Typical | 50 ms50 ms |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 5 in³/min.@3000 psi80 cc/min.@210 bar |
| Switching Frequency | 15000 cycles/hr15000 cycles/hr |
| Manual Override Force Requirement | 5 lbs/1000 psi @ Port 133 N/100 bar @ Port 1 |
| Manual Override Stroke | .10 in.2,5 mm |
| Solenoid Tube Diameter | .75 in.19 mm |
| Valve Hex Size | 7/8 in.22,2 mm |
| Valve Installation Torque | 30 - 35 lbf ft41 - 47 Nm |
| Model Weight | .60 lb0,30 kg |
| Seal kit - Cartridge | Viton: 990-461-006 |
| Seal and nut kit - Coil | Viton: 990-770-006Viton: 990-770-006 |
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