ATOS proportional valve DLKZA-TES-SN-NP-140-L71/M in stock

Brand

ATOS/Italian Atos

The structure of ATOS proportional valves: The main valve of a servo valve is generally a spool valve, similar to a directional 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 electro-hydraulic directional valves, except that the pilot valve of an electro-hydraulic directional valve is an electromagnetic valve, while the pilot valve of a servo valve is a nozzle-flange valve or jet valve with better dynamic characteristics.

In other words, the main valve of a 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 p is insufficient, the pilot valve cannot output enough pressure to actuate the main valve core.

We know that when the load is zero, if the four-way spool valve is open, the pressure at p = the pressure at 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 t is zero, then the pressure at p is insufficient to supply the pilot valve to actuate the main valve core, and the entire servo valve fails. Therefore, the servo valve's orifice is made relatively small. Even when the orifice is fully open, a certain pressure loss is necessary to maintain the normal operation of the pre-stage valve.

ATOS Proportional Valve Structure and Principle:

When the input signal to the ATOS proportional valve increases, the supply solenoid pilot valve 1 reverses, while the exhaust solenoid pilot valve 7 remains in the reset state. The supply pressure then enters the pilot chamber 5 from the SUP port through valve 1. The pilot chamber pressure rises, and the air pressure acts above the diaphragm 2. This opens the supply valve core 4 connected to the diaphragm 2, while the exhaust valve core 3 closes, generating output pressure. This output pressure of the ATOS proportional valve is fed back to the control loop 8 via pressure sensor 6. Here, a rapid comparison and correction is performed with the target value until the output pressure is proportional to the input signal, thus demonstrating that the output pressure changes proportionally to the change in the input signal. Because there is no nozzle-baffle mechanism, the valve is insensitive to impurities and has high reliability.

ATOS proportional valve DLKZA-TES-SN-NP-140-L71/M/I in stock

DHZO-AE-073-S5/I 10

DHZO-AT-073-P3 20

DHZO-ATE-073-P3/B/DP27SB 20

DHZO-T-051-L1

DHZO-T-051-L5 31

DHZO-T-071-D5

DHZO-T-071-L5

DHZO-T-071-S5

DHZO-TE-051-L5/Y 40

DHZO-TE-071-L5

DHZO-TE-071-S5 40/PE

DHZO-TE-073-S5 DKZA-A-173-L5/PA-M/7

DKZO-A-151-S5

DKZO-A-171-L5

DKZO-A-173-S5

DKZOR-A-151-S5

DKZOR-A-151-S5/18 40

DKZOR-A-151-S5/B

DKZOR-A-153-L5/B

DKZOR-A-171-D5 40

DKZOR-A-171-L5

DKZOR-A-171-S5

DKZOR-A-171-S5/18

DKZOR-A-173-D5

DKZOR-A-173-L5

DKZOR-A-173-L5/18 40 DKZOR-A-173-L5/Y

DKZOR-A-173-S3

DKZOR-A-173-S5

DKZOR-A-173-S5/18

DKZOR-AE-171-L5 10 Our company primarily deals with European and American brands, and can source brands from any European country. For example, our key German brands include: FESTO, BURKERT, BOSCH-REXROTH, IFM, TURCK, P+F, BALLUFF, SICK, HIRSCHMAN, MURR, HYDAC, GSR, CROUZET, E+H, PILZ, HAWE, SIEMENS, STAUFF, EUCHNER, EMG, UNIVER, ATOS, NORGREN, and approximately 500 other European brands of varying sizes. We have cooperative relationships with approximately 500 other European brands.

We also have companies in the US, and we cooperate with approximately 200 brands, including ASCO, Vickers, MAC, Parker, MOOG, Fairchild, Denison, Ross, UE, MTS, and GEFRAN.

We have distribution rights for Japanese brands, such as CKD, TOYOOKI, NACHI, DAIKIN, SMC, KOGANEI, TACO, NOK, and TOKIMEC.