Atos S.p.A. – Proportional valves and servo valves | TFS Oleodinamica

Authorized Atos S.p.A. Distributor in Italy

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Atos S.p.A.: the Italian manufacturer of proportional valves and servo valves

Atos S.p.A. is an Italian manufacturer of industrial hydraulic components with its historic headquarters and main production plant in Sesto Calende (Varese). Specializing in proportional valves, digital servo valves, and electronic pilot and control systems for industrial and mobile hydraulics, Atos operates in over 80 countries through an international sales network of subsidiaries and agents. The company positions itself as an Italian alternative to Bosch Rexroth and Moog in the proportional valve and servo valve segment, with a long-standing advantage in the valve-plus-integrated-electronics combination and in customization to OEM specifications.

Over the past two decades, Atos has expanded its portfolio to include on-board digital drivers, fieldbus interfaces (CANopen, EtherCAT), and PID control logic integrated into the valve. The range includes CETOP NG6/NG10/NG16/NG25/NG32 directional valves (ISO 4401, up to 350 bar), DKZOR/DPZO/DLKZOR proportional valves, DLHZO and DLHZO-T digital servo valves (response <5 ms, LVDT feedback), AGAM/ARAM/AGMZO modular valves, E-MI-AC/E-RI-AES/E-BM-AC electronics, servo-controlled axis units, and special ATEX versions (Zones 1 and 2) and for marine applications.

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Atos ↔ Bosch Rexroth, Moog, Parker Cross-Reference

TFS manages cross-referencing between the Atos series and equivalents from major global manufacturers. The following table is useful for retrofitting existing test benches, presses, and systems where original replacement parts have excessive lead times.

Atos Family	Equivalent Bosch Rexroth	Moog equivalent	Parker Equivalent
DLHZO / DLHZO-T (digital servo valve)	4WRPEH, 4WRPH	D633, D636, D638	DFplus, DSE
DKZOR (high-dynamic proportional)	4WRE, 4WREE	–	D1FP, D3FP
DPZO (proportional directional)	4WRA, 4WRZ	–	D1FB, D3FB
DLKZOR (Servo-Proportional Feedback)	4WRP, 4WRSE	D660	DFplus with feedback
AGAM (CETOP pressure regulator)	DBE, DBEM, DZ	–	R4U, R5U
AGMZO (proportional pressure)	DBET, DBETE	–	RDM, R4V
E-MI-AC / E-RI-AES (drivers)	VT-VRPA, VT-MRPA	G123/G129	PCD, PWD

Technical equivalents for informational purposes only. Always verify compatibility regarding pressure, flow rate, feedback, and electrical interface on a case-by-case basis.

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Industries served by TFS with Atos products

• Test & Simulation – fatigue test benches, automotive durability test benches, dynamic simulators, suspension test benches: DLHZO and DLHZO-T servo valves for high-dynamic closed-loop position/force control.
• Plastic injection molding machines – proportional injection and hold control with DKZOR and DPZO, DLKZOR proportional-servo valves for repeatable cycles.
• Machine tools and industrial automation – axis position control, spindles, dynamic balancing systems with CANopen/EtherCAT interface.
• Metal forming and forging – forming presses with proportional flow and pressure valves, AGAM controllers for multi-stage cycles.
• Oil & Gas and industrial process – proportional valves with ATEX Zone 1 and 2 versions for chemical plants, refineries, and storage facilities.
• Shipbuilding and marine – versions with product certification issued by classification societies (RINA, Lloyd’s, ABS, DNV, Bureau Veritas) for offshore and on-board applications.

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Why buy Atos from TFS Oleodinamica

TFS Oleodinamica, a Bosch Rexroth Certified Excellence Service Partner since 1997, supplies new Atos valves, servo valves, and electronics; performs repairs and calibration on Bosch Rexroth test benches; and integrates Atos servo valves into its custom-designed power units. The dual expertise of Bosch Rexroth and Atos is rare in the Italian market and can be matched by only a few specialized service centers.

• Repair and calibration on Bosch Rexroth test benches for Atos DLHZO, DLHZO-T, and DKZOR/DPZO proportional servo valves. Disassembly, inspection, replacement of parts, recalibration of zero, hysteresis, and linearity, final testing with response curve documentation.
• Immediate stock of high-turnover Atos part numbers (NG6 and NG10 directional valves, AGAM, E-MI-AC drivers) and direct access to the Atos sales network for rapid delivery throughout Italy.
• Atos ↔ Bosch Rexroth ↔ Moog ↔ Parker cross-referencing for the retrofitting of existing test benches, presses, and systems while maintaining ISO 4401 pinout.
• Custom multi-brand control units – integration of Atos servo valves with Bosch Rexroth valve blocks, Hengst or Hydac filters, Emmegi heat exchangers, and Alfagomma tubing for complete precision HPUs.
• Application support – analysis of control requirements, selection of the correct valve family based on flow rate, pressure, response frequency, feedback type, and electrical interface (analog, CAN, EtherCAT).
• Special versions – ATEX Zone 1 and 2 for Oil & Gas, certified for marine applications, stainless steel versions for aggressive environments.
• National and international coverage – service and supply for OEMs and industrial maintenance providers throughout Italy and EU exports.

Do you have a press, a test bench, a Test & Simulation system, or a machine tool where you need to evaluate the integration, repair, or retrofit of Atos proportional valves and servo valves? Contact the TFS technical team – we work with the entire DLHZO, DKZOR, DPZO, AGAM, and E-MI-AC driver range, including stock, a Bosch Rexroth test bench, and application support.