Choose the 4H family first
A similar body does not guarantee the same function. Confirm the function and interface first, then compare size and installed dimensions.
4H
Maintained manual-return form
4HA
Spring-return form
AirTAC 4H Manual Five-Port Valves
4H is a manual five-port, two-position and three-position valve family. Confirm 4H maintained or 4HA spring-return operation, size, circuit, port and mounting before RFQ.
Request type
AirTAC originalModel matchingChina-source alternative
4HManual, Mechanical, and Special Valves
Ordering code matching
Match each code segment
Code format
4H / 4HA [2/3] [10/20/30C/30E] [06/08/10] [PT/G/NPT]Published 4H code layout4H210-064H230C-084H230E-084HA330C-10| ①Return form | ②Size / circuit | ③Port | ④Thread |
|---|---|---|---|
| 4H maintained manual return; 4HA spring return. | 2 or 3 size; 10/20 two-position, 30C closed centre or 30E exhaust centre. | 06 PT1/8; 08 PT1/4; 10 PT3/8. | Blank PT; G G-thread; T NPT. |
About 4H
4H is the maintained manual-return form; 4HA is the spring-return form. The source covers 200 and 300 sizes, two-position 10/20 circuits and three-position 30C/30E circuits. Circuit, return style and mounting form must be retained with the port size when replacing a valve.
Product matching reference
Compare the photo, drawing, and measurable details first
Identify from the photo
- Full 4H or 4HA code, or a clear installed photo
- 4H maintained manual return or 4HA spring return
- 200 or 300 size
- 10/20 two-position or 30C/30E three-position circuit
- PT1/8, PT1/4 or PT3/8 port, thread and panel/body mounting
Drawing reference
- Confirm 4H maintained manual return or 4HA spring-return construction
- Match 200 or 300 size, 10/20/30C/30E function, port, thread and panel or body mounting
Key details for matching
Model patterns
- 4H210-06
- 4H230C-08
- 4H230E-08
- 4H310-10
Reference details
- Product type: Manual five-port two-position and three-position directional valve
- Published sizes: 200 and 300 series
- Published ports: PT1/8, PT1/4, PT3/8
- Published operating / proof pressure: 0–1.0 MPa / 1.5 MPa
- Reference pages: PDF pages 1–4
Matching Questions
Is a 4H valve interchangeable with a 4HA valve?
Not automatically. The PDF distinguishes maintained manual return from spring return; match the circuit, return style, port and installed mounting...
4H
Include this series in a project RFQ
4H Add other models, quantities, photos, drawings, or a BOM. One request can cover several product groups.