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Home/Product Series/AirTAC Sourcing/Air Pilot Valves/4A-400
AirTAC sourcing reference•Air Pilot Valves
SERIES4A-400

AirTAC 4A400 Five-Port Air-Pilot Valves

4A400 air-pilot valves
Series product image
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Externally air-piloted 5/2 and 5/3 valves with 1/2 inlet, outlet and exhaust ports. Send the...

Official reference

Based on manufacturer documentation

Model support

For model confirmation

Parts lists

Code, photo, or BOM

Availability / lead time

By model and quantity

Sourcing route & inquiry details

Externally air-piloted 5/2 and 5/3 valves with 1/2 inlet, outlet and exhaust ports. Send the full circuit code or label, quantity and destination for a quotation.

Know your model? Send it with the quantity for a quote. Not sure? Start with a photo, label or description. We help identify the model and clarify availability and lead time. Mixed parts lists are welcome too.

Request type
AirTAC originalModel matchingChina-source alternative

Find your 4A-400 type

Choose a type; send a model or photo if unsure.

4A410

5/2 single air pilot

4A420

5/2 double air pilot, memory function

4A430C

5/3 closed center

4A430E

5/3 exhaust center

4A430P

5/3 pressure center

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Send the model, quantity and destination. For multiple items, attach a parts list or BOM.

Match a 4A400 model code

Matching manifold base: 400M

1–8 stations, 1/2 base inlet; request the base, blank plates or valve assembly. The 3V bases for 3A are separate.

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Drawings & dimensions

Installation Drawings & Technical Specifications

Compare installed dimensions
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4A400 ordering-code fieldsClick to open full drawing ↗

4A400 ordering-code fields

Helpful for Model Matching:

  • Full 4A400 code or readable label
  • 10/20 two-position or 30C/30E/30P three-position circuit
  • 15=1/2 inlet/outlet/exhaust; pilot ports 1/8
  • PT/G/NPT thread, pilot connections and installed base/interface
  • Use matching 4A410, 4A420 or catalogue shared 4A430 dimensional drawing
  • 15 inlet/outlet/exhaust ports 1/2; separate pilot ports 1/8
  • Shared 4A430 outline does not equate C/E/P center circuits
  • 400M base for 4A400, max8 stations, inlet1/2; confirm complete assembly

Catalogue Technical Specifications

AirTAC reference data
Function5 ports; 5/2 (10/20) or 5/3 (30C/E/P); external air pilot
Main ports15: inlet/outlet/exhaust 1/2; pilot ports 1/8; PT/G/NPT
Equivalent flow area / Cv4A410-15 / 4A420-15: 48.0 mm² / Cv 2.82; 4A430C-15: 40.0 mm² / Cv 2.35. E/P values not stated.
Operating pressure0.15–0.8 MPa (21–114 psi)
Proof pressure1.2 MPa (175 psi)
Temperature−20 to +70 °C
Maximum no-load frequency5/2 and 5/3: 3 cycles/s (no load)
Medium / lubricationAir filtered through 40 μm element. Lubrication not required; once lubricated, continue the same medium; ISO VG32 or equivalent recommended.
BodyAluminum alloy
Common Model Codes & Configurations:Useful for an RFQ
4A4004A410-154A420-15-G4A430C-15-T

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Technical reference & selection notes

Ordering Codes, Fit Verification & Specifications

Specifications, installation dimensions, and ordering-code notes.

Ordering code matching

Match each code segment

Send a photo if the code is incomplete

Code format

4A4[10/20/30C/30E/30P]-15-[blank/G/T]Full circuit, main port and thread
4A410-154A420-15-G4A430C-15-T4A430E-154A430P-15
①Circuit②Port / thread
10 single-pilot 5/2; 20 double-pilot 5/2; 30C closed, 30E exhaust, 30P pressure center 5/3.15=1/2 inlet/outlet/exhaust. Blank PT, G, T=NPT.

Avoid a wrong match

  • 30C, 30E and 30P have different center circuits; retain the suffix.
  • 15 main inlet/outlet/exhaust ports are 1/2; pilot connections separately 1/8.
  • Maximum no-load frequency: 3 cycles/s for both 5/2 and 5/3.
  • 40.0 mm² / Cv 2.35 is explicitly listed for 4A430C-15 only; no E/P value is inferred.
  • Official P124 lists 400M for 4A400, 1–8 stations; base inlet 1/2. Confirm valve code, station count, thread and blank plates.

Read the model code

If the label is incomplete, send the readable parts together with a photo.

4A430E-15-G

4A4Valve family / size

400 range, externally air-piloted 5/2 or 5/3.

10 / 20 / 30C / 30E / 30PControl / circuit

10 single pilot; 20 double pilot; 30C closed, 30E exhaust, 30P pressure center.

15Main port

1/2 inlet/outlet/exhaust. Pilot ports separately 1/8.

blank / G / TThread

Blank PT, G or T=NPT.

About 4A-400

4A400 includes single-pilot 4A410 and double-pilot 4A420 5/2 valves, plus double-pilot 4A430C/E/P 5/3 valves. All main inlet, outlet and exhaust ports are 1/2; pilot ports are separately 1/8. Retain the full circuit code and installed interface for replacement inquiries.

Matching Questions

Are the main and pilot ports the same size?

No. 4A400 uses port code 15: inlet, outlet and exhaust are 1/2. The installation drawings show pilot connections separately as 1/8. Match the actual connection and PT/G/NPT thread.

What flow and frequency values are published for 4A400?

48.0 mm² / Cv 2.82 is listed for 4A410-15 and 4A420-15; 40.0 mm² / Cv 2.35 specifically for 4A430C-15. E/P flow values are not stated. Maximum no-load frequency is 3 cycles/s for both 5/2 and 5/3.

Can I request help with an incomplete code or manifold base?

Yes. Send the label or photos, circuit function, quantity and destination. Official P124 lists 400M for 4A400 with 1–8 stations and a 1/2 base inlet. Send occupied stations, thread and blank-plate needs for a base or valve-assembly quotation.

4A-400

Include this series in a project RFQ

4A-400 Add other models, quantities, photos, drawings, or a BOM. One request can cover several product groups.

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Confirm inspection requirements before quotation•Specify shipping preference•Confirm timing in the quotation•Ocean & Rail Available
COMPANION PRODUCTS

Products to use together

Build your pneumatic circuit with complementary components. Confirm dimensions and operating conditions before selecting a combination.

PneuPart tube fittings
Connect the air line

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PneuPart tube fittings

Connect tubing to a valve or actuator. Match tube outside diameter, port thread and seal type.

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PneuPart pneumatic tubing
Route the air supply

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PneuPart pneumatic tubing

Run air lines between fittings and components. Confirm outside diameter, bend radius, pressure and temperature.

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Air filters & regulators
Prepare the air supply

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Air filters & regulators

Filter and regulate supply air. Confirm filtration, pressure range and flow requirements for the connected equipment.

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Planning a Complete Circuit or Multi-Item BOM?

Send your parts list, connection sizes and operating conditions for a matching check and combined quotation.

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Pneupart

Pneupart is a China-based pneumatic sourcing brand for distributors, factories, and MRO buyers. Send a model, label, drawing or BOM for technical confirmation and quotation. Specify whether original AirTAC sourcing or an alternative is required.

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