DLHZO subplate proportional
ISO size 06 subplate-mounted Atos proportional valves. Spool service, coil rebuild, seal kits, and onboard driver-card checks where the model has integrated electronics.
NC Servo Technology - Westland, Michigan
734-326-6666
Independent Repair Shop. Not Atos.
Third-Party Repair of Atos Servoproportional Valves
Independent third-party repair of Atos servoproportional and proportional valves: DLHZO ISO 06 subplate, DLKZOR ISO 06-32 cartridge, and LVDT-feedback hardware with onboard TEB digital electronics. Italian-made, with long part-number strings that decode every option of the build. Backed by a 19,000+ unit in-house inventory we pull aftermarket and donor parts from. NC Servo is not affiliated with Atos. Working on this kind of hardware since 1975.
DLHZO + DLKZOR coverage
Both ISO 06 subplate-mounted and ISO 06-32 cartridge proportional valves serviced.
LVDT feedback servicing
LVDT position transducer verification and trim on Atos servoproportional bodies.
One-year warranty
Standard on parts and workmanship for Atos repairs and rebuilt units.
Part-Number Anatomy
Decoding an Atos part number
Atos packs every build option into the part-number suffix. Below is a representative example we have seen on the bench. The actual decode varies by family, but the structure is consistent: each block of characters maps to a specific spec on the unit.
DLKZ0R-TEB-SN-NP-140-L71-20
DLKZ0R
Family: cartridge servoproportional with LVDT feedback
TEB
Onboard digital electronics
SN
Spool option
NP
Port and connector configuration
140
Rated pressure or size code
L71
Solenoid / coil option
20
Build / revision code
Service Coverage
What NC Servo does with an Atos valve
Atos valves often arrive with their LVDT feedback open or out of trim. The shop opens each unit, verifies the feedback path, and rebuilds the valve at the component level using parts from inventory or pulled off donor units when needed.
DLKZOR cartridge servoproportional
ISO sizes 06 to 32 cartridge servoproportional valves with LVDT position feedback. Pilot stage cleaning, spool service, LVDT verification, and bench testing.
Pressure, flow, and speed controls
Atos pressure valves, flow valves, and pressure-compensated speed controls. Body internals, poppet seats, and signal-conditioning electronics.
Atos Coverage
Atos families through the door
We are a small repair shop, not an Atos distributor. The families below are simply the ones that come through often enough to be familiar. If your part number is not on this list, send it anyway. We work on what we can.
DLHZO series
ISO size 06 subplate-mounted proportional directional valves with onboard digital electronics.
DLKZOR series
ISO sizes 06-32 cartridge servoproportional valves with LVDT position feedback. Examples: DLKZ0R-TEB-SN-NP-140-L71-20.
Pressure and flow valves
Atos pressure control valves, flow control valves, and pressure-compensated speed controls.
Discontinued and obsolete
Older Atos lines the OEM no longer services. Donor parts from inventory keep these in service.
Common Faults
What usually shows up on an Atos repair
A description of the symptom helps the diagnosis, but a part number is often enough. The categories below cover the kinds of trouble that come in across Atos servoproportional and proportional valves.
| LVDT and feedback | LVDT signal drift, broken feedback wires, position-feedback null shift, or signal-conditioning faults on the onboard driver card. |
|---|---|
| Spool and body | Spool wear, contamination scoring, sticky spool action, internal leakage past the spool, or seal failure on the cartridge or subplate body. |
| Coils and onboard driver | Burned proportional coils, failed TEB digital electronics, blown output stages, or open windings on the pilot stage. |
| Connector and electrical | Damaged or corroded connectors, cable strain at the entry point, and contamination on the connector pins after years of service. |
Repair Path
From part number to ship-back
Most Atos jobs follow the same four steps. Lead time varies because some repairs need parts pulled off a donor unit, so we only commit to timing once a tech has the valve in hand.
Get in touch
Phone or email with the full Atos part-number string, a quick note on the symptom, and a photo of the nameplate if it helps.
Bench review
Once the unit arrives, a tech opens it, inspects spool and LVDT, and runs it on the hydraulic stand to confirm what failed.
Cost & approval
We call back with the cost and a rough turnaround. Nothing happens without your sign-off.
Repair, test, ship
Failed components are replaced from inventory or off donors, the valve is verified under pressure, and the unit ships back.
Bench Verification
Each Atos valve gets pressurized before ship
Repaired Atos valves are checked on the hydraulic test stands before they leave. Flow, pressure gain, response, null, and LVDT signal are verified against documented procedures for the family.
- Flow characterization across the operating range for the model.
- Pressure gain and step-response measurement against documented procedures.
- LVDT position-feedback verification across the full stroke.
- Internal and external leakage checked after seal and spool work.
Inventory & Parts Pool
A 19,000+ unit pool with Atos hardware in it
NC Servo's in-house inventory holds over 19,000 valves and drives accumulated since 1975, including DLHZO, DLKZOR, and other Atos servoproportional bodies. That pool is where the shop pulls aftermarket parts and donor components for older Atos units that the OEM no longer stocks.
- Aftermarket and donor parts for Atos DLHZO, DLKZOR, pressure, and flow valves.
- If we have a rebuilt match for your part number, trade in your old valve for a discount on the rebuilt.
- No match on the shelf? We can suggest a comparable Atos or cross-brand option, or repair yours.
- Rebuilt valves carry the same 1-year warranty as a fresh repair.
Repair Scope
Where the line is on an Atos repair
NC Servo works on the valve hardware itself: the body, spool, coils, LVDT feedback, and onboard driver-card components. Hydraulic system design, fluid selection, and getting the valve back on the machine stay with your team or your installer.
- Internal valve work: spool service, seal replacement, coil rebuild, LVDT verification.
- Onboard driver-card service on TEB-equipped units.
- System pressure setup and hydraulic schematic decisions remain on your side.
- Putting the valve back on the machine follows your normal startup process.
More on Atos Repair
Related pages and brands
Atos hardware often shares a machine with valves and electronics from related brands. The pages below cover related coverage and adjacent valve work.
Valve repair hub
The full range of servo and proportional valve repair NC Servo handles, across the brands that come through the shop.
Injection molding
How Atos and other valves get repaired off injection molding machines, where Atos servoproportional hardware is common.
Moog servo valves
Another LVDT-feedback servo valve brand the shop services. Useful when an Atos valve needs a cross-brand replacement.
Repair vs replace
When component-level repair makes sense versus buying new or rebuilt.
Atos valve down?
Give us a call with the full part-number string off the nameplate, a photo, or a quick description of the symptom. We will check the shelf, and if we have a rebuilt match you can swap your old one for a discount. If we do not, we can suggest a comparable valve or repair the one you have.
FAQ
Common questions about Atos repair
A few things customers ask before sending a unit in. Anything not covered, give us a call at 734-326-6666.
Is NC Servo affiliated with Atos?
No. NC Servo Technology is an independent, third-party repair facility and is not affiliated with, authorized by, or endorsed by Atos S.p.A. or any related entities. All Atos trademarks are the property of their respective owners.
Which Atos products are in scope?
Servoproportional directional valves with LVDT position feedback, DLHZO subplate-mounted proportional valves (ISO size 06), DLKZOR cartridge proportional valves (ISO sizes 06 to 32), pressure valves, flow valves, and pressure-compensated speed controls. Send a part number to confirm coverage on anything not listed.
Do you read Atos part-number strings?
Yes. Atos part numbers like DLKZ0R-TEB-SN-NP-140-L71-20 carry every option of the build into the suffix: spool, electronics, port arrangement, pressure rating, and feedback type. Send the full string. The suffix is what tells us exactly which configuration we are looking at.
Can NC Servo recover programs from a failed Atos TEB digital valve?
Most failures are hardware, and the unit comes back working with its program intact. Corrupted programs are rare; if one is already corrupted before the unit reaches us, that's the one thing we can't recover.
How long does an Atos repair take?
It varies. NC Servo is a small independent shop, and lead time depends on the valve, what is wrong with it, and whether parts have to come off a donor unit. Give us a call once the unit ships in, and we can give a current estimate after a tech has looked at it.
What if the Atos valve is beyond economic repair?
If the valve is not fixable, we will let you know and help source a replacement: a rebuilt match if we have one on the shelf, or a comparable Atos or cross-brand alternative.
What is the warranty on an Atos repair?
One year on parts and workmanship for repairs and rebuilt units. Standard exclusions apply for contamination, improper installation, and out-of-spec operation. Flushing and filtering the hydraulic system before reinstalling a repaired valve is recommended.
Atos Products We Service
88 models available
ATOS
ATOS
ATOS E-ME-A-01
When your ATOS E-ME-A-01 electronic control fails, production stops. limited stock. NC Servo Tech offers...
ATOS
ATOS
ATOS DHZ0-TEB-SN-NP-071-L5-10
Reliable Services for your ATOS DHZ0-TEB-SN-NP-071-L5-10. We offer cost-effective solutions. Get a quote!
ATOS
ATOS
ATOS DHZ0-AE-071-L310
Need your ATOS DHZ0-AE-071-L310 repaired right the first time? With 50+ years of hydraulic experience...
ATOS
ATOS
ATOS DHZ0-A-071-S3-20
When your ATOS DHZ0-A-071-S3-20 valve fails, production stops. limited stock. NC Servo Tech offers expert...
ATOS
ATOS
ATOS DHRZ0-P5-012125/611
Tested Solutions for your ATOS DHRZ0-P5-012125/611. We offer cost-effective solutions. Contact us now!
ATOS
ATOS
ATOS C0/10-9-32/22X70-H308-22
A broken ATOS C0/10-9-32/22X70-H308-22 valve can disrupt your entire system. We provide fast repairs and...
ATOS
ATOS
ATOS DLKZ0R TEB SN NP 140 L71 20
Every minute your ATOS DLKZ0R TEB SN NP 140 L71 20 is down costs your...
ATOS
ATOS
ATOS E-ME-T-05H
Looking for a reliable fix for your ATOS E-ME-T-05H? NC Servo Tech handles diagnostics, component-level...
ATOS
ATOS
ATOS E-ME-T-01F
Your ATOS E-ME-T-01F keeps your system running. Our technicians perform board-level diagnostics and repair using...
ATOS
ATOS
ATOS E-ME-K-PID20
When your ATOS E-ME-K-PID20 electronic control fails, you need a fast solution. NC Servo Tech...
ATOS
ATOS
ATOS E-ME-AC-05F
Trusted Refurbishment for your ATOS E-ME-AC-05F. We offer cost-effective solutions. Get a quote!
ATOS
ATOS
ATOS DHZU-A-063-S2/30
When your ATOS DHZU-A-063-S2/30 valve fails, production stops. subject to availability. NC Servo Tech offers...
All Atos Products
- ATOS E-ME-A-01 - Model: E-ME-A-01
- ATOS DHZ0-TEB-SN-NP-071-L5-10 - Model: DHZ0-TEB-SN-NP-071-L5-10
- ATOS DHZ0-AE-071-L310 - Model: DHZ0-AE-071-L310
- ATOS DHZ0-A-071-S3-20 - Model: DHZ0-A-071-S3-20
- ATOS DHRZ0-P5-012125/611 - Model: DHRZ0-P5-012125/611
- ATOS C0/10-9-32/22X70-H308-22 - Model: C0/10-9-32/22X70-H308-22
- ATOS DLKZ0R TEB SN NP 140 L71 20 - Model: DLKZ0R TEB SN NP 140 L71 20
- ATOS E-ME-T-05H - Model: E-ME-T-05H
- ATOS E-ME-T-01F - Model: E-ME-T-01F
- ATOS E-ME-K-PID20 - Model: E-ME-K-PID20
- ATOS E-ME-AC-05F - Model: E-ME-AC-05F
- ATOS DHZU-A-063-S2/30 - Model: DHZU-A-063-S2/30
- ATOS E-BI-AC-05F/RR - Model: E-BI-AC-05F/RR
- ATOS RZMO-P1E-010/315-10 - Model: RZMO-P1E-010/315-10
- ATOS RZM0-TER-010/315-40PE - Model: RZM0-TER-010/315-40PE
- ATOS RZG0-AE-033/Z1010 - Model: RZG0-AE-033/Z1010
- ATOS LPZ0HE/373L5 - Model: LPZ0HE/373L5
- ATOS E-RI-TE-05H40/DH07SA - Model: E-RI-TE-05H40/DH07SA
- ATOS DPZU-A-271-S4/21 - Model: DPZU-A-271-S4/21
- ATOS DPZ0HE/271-L5 - Model: DPZ0HE/271-L5
- ATOS DPZ0-LEB-SN-NP-473-L5/E10 - Model: DPZ0-LEB-SN-NP-473-L5/E10
- ATOS DPZ0-LE-271-L540 - Model: DPZ0-LE-271-L540
- ATOS DPZ0-LE-270-L5/D41 - Model: DPZ0-LE-270-L5/D41
- ATOS RZMO-TERS-PS-010/210 - Model: RZMO-TERS-PS-010/210
- ATOS RZMA/UL-P1-010/250/NPT - Model: RZMA/UL-P1-010/250/NPT
- ATOS RZJ0-TER-010/210/M/15 - Model: RZJ0-TER-010/210/M/15
- ATOS QVZ-20/3/A/41 - Model: QVZ-20/3/A/41
- ATOS EHZ0-A-060-S3/6/13 - Model: EHZ0-A-060-S3/6/13
- ATOS DPZU-C-271-S6/20 - Model: DPZU-C-271-S6/20
- ATOS DPZJ-TE-370-L5/10 - Model: DPZJ-TE-370-L5/10
- ATOS DPZ0-RLE-171-1.5/D10 - Model: DPZ0-RLE-171-1.5/D10
- ATOS DPZ0-LEB-SN-NP-171-L5/D10 - Model: DPZ0-LEB-SN-NP-171-L5/D10
- ATOS DPZ0-LE-271-D5/D/M/11 - Model: DPZ0-LE-271-D5/D/M/11
- ATOS DPZ0-LE-270-L550 - Model: DPZ0-LE-270-L550
- ATOS DLKZOR-TE-140-L7141 - Model: DLKZOR-TE-140-L7141
- ATOS DLKZ0TE140L7112 - Model: DLKZ0TE140L7112
- ATOS DLHZO-TE-040-L3140 - Model: DLHZO-TE-040-L3140
- ATOS DLHZ0-TE-040-L3140 - Model: DLHZ0-TE-040-L3140
- ATOS DLHZ0-LEB-SN-NP-471 - Model: DLHZ0-LEB-SN-NP-471
- ATOS DLHZ0-LE-040-V3340 - Model: DLHZ0-LE-040-V3340
- ATOS DLHZ0-LE-040-L13/B? - Model: DLHZ0-LE-040-L13/B?
- ATOS DLHZ0-L-040-V33 - Model: DLHZ0-L-040-V33
- ATOS DKZ0R-TE-171-L5-40 - Model: DKZ0R-TE-171-L5-40
- ATOS DKU-1631/2/24 - Model: DKU-1631/2/24
- ATOS DLHZ0-LEB-SN-NP-040-L03-10 - Model: DLHZ0-LEB-SN-NP-040-L03-10
- ATOS DPZO-L-270-L3/E - Model: DPZO-L-270-L3/E
- ATOS DPZ0-T-271-05111 - Model: DPZ0-T-271-05111
- ATOS DPZ0-LEB-SN-NP-471/L5A - Model: DPZ0-LEB-SN-NP-471/L5A
- ATOS DPZ0-LE-271-D540 - Model: DPZ0-LE-271-D540
- ATOS DPZ0-LE-270-L540 - Model: DPZ0-LE-270-L540
- ATOS DPZ0-L-373-L5/10 - Model: DPZ0-L-373-L5/10
- ATOS DLKZJ-TE-140-L81/12 - Model: DLKZJ-TE-140-L81/12
- ATOS DLKZ0-TE-140-L71/12 - Model: DLKZ0-TE-140-L71/12
- ATOS DLHZ0-TE-L1131 - Model: DLHZ0-TE-L1131
- ATOS DLHZ0-RLE-040-L03/DL17SB10 - Model: DLHZ0-RLE-040-L03/DL17SB10
- ATOS E-RI-TE-05H 41/DH07SA - Model: E-RI-TE-05H 41/DH07SA
- ATOS DLHZ0-LE-040-V33-DL26SB40 - Model: DLHZ0-LE-040-V33-DL26SB40
- ATOS DLHZ0-LE-040-L03 - Model: DLHZ0-LE-040-L03
- ATOS DKZE-T-163-L2/B/0/10 - Model: DKZE-T-163-L2/B/0/10
- ATOS DKZ0-T-173-S5/13 - Model: DKZ0-T-173-S5/13
- ATOS DKER-1713/LDC10 - Model: DKER-1713/LDC10
- ATOS DHZO-A-071-D5-20 - Model: DHZO-A-071-D5-20
- ATOS DHZ0-AE-071-S2-10 - Model: DHZ0-AE-071-S2-10
- ATOS DHZ0-A-260-S320 - Model: DHZ0-A-260-S320
- ATOS DHS/610/30 - Model: DHS/610/30
- ATOS DHA/UL-0631/2/NPT22 - Model: DHA/UL-0631/2/NPT22
- ATOS DKU-1630-21 - Model: DKU-1630-21
- ATOS DPZ0-LE-171-L5/D - Model: DPZ0-LE-171-L5/D
- ATOS DLKZOR-TE-140-L71 - Model: DLKZOR-TE-140-L71
- ATOS DLKZ0-TE-140-L71/M31 - Model: DLKZ0-TE-140-L71/M31
- ATOS DLHZ0HE-040-L0340 - Model: DLHZ0HE-040-L0340
- ATOS DLHZ0-TE-040-L31-40 - Model: DLHZ0-TE-040-L31-40
- ATOS DLHZ0-LEB-SN-NP-040-L1310 - Model: DLHZ0-LEB-SN-NP-040-L1310
- ATOS DLHZ0-LE-040-V33/DL26SB41 - Model: DLHZ0-LE-040-V33/DL26SB41
- ATOS DLHZ0-LE-040-L0340 - Model: DLHZ0-LE-040-L0340
- ATOS DKZET163L2-8-0 - Model: DKZET163L2-8-0
- ATOS DKZ0-TE-153-S5/M/13 - Model: DKZ0-TE-153-S5/M/13
- ATOS 04E009RI-LE - Model: 04E009RI-LE
- ATOS DHZO-TE-071-LI/B40 - Model: DHZO-TE-071-LI/B40
- ATOS DHZ0-TE-053-S5 - Model: DHZ0-TE-053-S5
- ATOS DHZ0-AE-071-1310 - Model: DHZ0-AE-071-1310
- ATOS DHZ0-A-060-S3/20 - Model: DHZ0-A-060-S3/20
- ATOS DHQ-016/C/Z6-UX - Model: DHQ-016/C/Z6-UX
- ATOS 860873DPZU-T-171-00 - Model: 860873DPZU-T-171-00
- ATOS RZMO-AE-010/31510 - Model: RZMO-AE-010/31510
- ATOS RZM0-A-030/315 40 - Model: RZM0-A-030/315 40
- ATOS QZUA06311 - Model: QZUA06311
- ATOS KR-012/35 - Model: KR-012/35
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