ATOS proportional servo valve DLHZO-LE-040-L03/DL27SB40
LEHIY item code: LH-ATOS-0001
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Two ATOS proportional servo valves (DLHZO-LE-040-L03/DL27SB40) are in stock. The ATOS electro-hydraulic proportional valve consists of: an ATOS amplifier (E-R1-LE-01H41/DL27SB), an ATOS primary valve (DLHZO-LE-040-L03/DL27SB40), and an ATOS secondary valve (DPZO-LE-271-S5-41).
These two ATOS proportional servo valves are in short supply and are being sold off urgently.
Order now! Futures orders will take approximately 16 weeks to complete once stock is sold out. ATOS proportional servo valves offer performance between servo valves and proportional valves. We have a large stock of ATOS servo proportional valves (DLHZ) from Italy, at a good price.
They are genuine Italian products with original factory quality.
We provide technical support, after-sales installation guidance, and repair services. The main valve of the Italian ATOS servo valve is generally a spool valve, similar to a directional control valve.
However, the valve core is not driven by an electromagnet, but by the hydraulic pressure output from the pilot valve.
This is similar to an electro-hydraulic directional control valve, except that the pilot valve of the ATOS electro-hydraulic directional control valve is an electromagnetic directional control valve, while the pilot valve of the ATOS servo valve is a nozzle-flange valve or jet valve with better dynamic characteristics.
It belongs to the same product category as the German REXROTH 4WRPEH6 servo valve.
In other words, the main valve of the ATOS servo valve is controlled by the output pressure of the pilot valve, and the pressure of the pilot valve comes from the inlet p of the servo valve.
If the pressure at port p is insufficient, the pilot valve cannot output enough pressure to drive the main valve core.
We know that when the load is zero, if the four-way spool valve is open, the pressure at port p = the pressure at port t + the pressure loss at the valve port (ignoring other pressure losses in the oil circuit).
If the pressure loss at the valve port is very small, and the pressure at port t is zero, then the pressure at port p is insufficient to supply the pilot valve to actuate the main valve spool, and the entire servo valve will fail.
Therefore, the valve port of the ATOS servo valve is made relatively small, so even when the valve port is fully open, there must be a certain pressure loss to maintain the normal operation of the pilot valve.
ATOS servo valves actually have many disadvantages: high energy consumption, prone to failure, poor contamination resistance, high price, etc., etc., but only one advantage: the highest dynamic performance among all hydraulic valves.
Because of this one advantage, servo valves are necessary in many applications with high dynamic performance requirements, such as aircraft and rocket servo control, and turbine speed regulation. For applications with lower dynamic requirements, proportional valves are generally preferred.
The main differences between ATOS proportional valves and ATOS servo valves are as follows:
- ATOS servo valves have no dead zone in the neutral position, while proportional valves do.
- ATOS servo valves have a higher frequency response, reaching up to approximately 200Hz, while proportional valves generally have a maximum frequency of tens of Hz.
- ATOS servo valves have higher requirements for hydraulic fluid, requiring fine filtration to prevent clogging, while ATOS proportional valves have lower requirements.
- The valve core structure and machining precision differ. Servo valves and ATOS servo proportional valves use a valve core + valve sleeve structure.
- The types of neutral position functions differ. Proportional directional valves have neutral position functions similar to ordinary directional valves, while ATOS servo valves only have an O-type neutral position function (E-type for Rexroth products).
- The rated pressure drop of the valves differs. The last two ATOS proportional servo valves, DLHZO-LE-040-L03/DL27SB40, are in stock. ATOS proportional directional valves are a type of ATOS proportional valve used to control flow rate and direction. This valve is a direct-acting servo valve with a 6-way valve and a built-in amplifier. Rated maximum pressure is 35MPa, and rated force is 40 liters. ATOS servo valve models: ATOS electro-hydraulic proportional valve amplifier E-R1-LE-01H41/DL27SB;
- primary valve DLHZO-LE-040-L03/DL27SB40;
- secondary valve DPZO-LE-271-S5-41;
- DLHZO-TE-040-L03 31, DLHZO-TE-040-L11, DLHZO-TE-040-L11 40, DLHZO-TE-040-L11/I. DLHZO-TE-040-L11/I 40, DLHZO-T-040-L11 31, DLHZO-T-040-L13, DLHZO-T-040-L13 31 DLHZO-T-040-L31, DLHZO-T-040-DT71 31, DLHZO-TE-040-L51, DLHZO-TE-040-L51 40, DLHZO-TE-040-L51/FI 40, DLHZO-TE-040-L51/I, DLHZO-TE-040-L53, DLHZO-TE-040-L53 40, DLHZO-TE-040-L53/I, DLHZO-TE-040-L53/I 40, DLHZO-T-040-L31 31, DLHZO-T-040-L51, DLHZO-T-040-L53, DLHZO-T-040-L71, DLHZO-T-040-L71 31, DLHZO-TE-040-L13 40, DLHZO-TE-040-L31 40, DLHZO-TE-040-L31/FI 40, DLHZO-TE-040-L31/I, DLHZO-TE-040-L71, DLHZO-TE-040-L33/I 40, DLHZO-LE-040-L03/DL27SB40, DLHZO-LE-040-L13/B/DL37SB 40
Plain language sourcing guide for ATOS proportional servo valve DLHZO-LE-040-L03/DL27SB40
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| Brand Name: | ATOS | Certification: | ISO9001, CE |
|---|---|---|---|
| Place of Origin: | China | Condition: | New |
| Warranty: | 1 year | Customized sourcing: | available |
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ATOS proportional servo valve DLHZO-LE-040-L03/DL27SB40
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