- Used where air is the preferred source of energy, where electricity is unavailable, or where sparks are a concern
- For operating pressures to 10,000 psi
- Two-speed operation for high speed cylinder advance
Single Acting
| Part No. | Valve Type | Valve No. | Valve Function | Reservoir Capacity |
| PA172 | 2-way | 9517 | Advance Return | 2 gallon |
| PA462 | 2-way | 9584 | Advance Hold Return | 2.5 gallon |
Double Acting
| Part No. | Valve Type | Valve No. | Valve Function | Reservoir Capacity |
| PA174 | 4-way | 9500 | Advance Return | 2 gallon |
| PA464 | 4-way | 9500 | Advance Hold Return | 2.5 gallon |
| PA464R | 4-way | 9594 | Advance Hold Return | 2.5 gallon |
| PA464RA^ | 4-way | 9594 | Advance Hold Return | 2.5 gallon |
| PA554 | 4-way | 9500 | Advance Hold Return | 2.5 gallon |
^ not to be used for lifting
Steel Reservoir Conversion Kit
| Part No. | Description | Capacity | Gasket and Fasteners |
| 213895 | Steel reservoir used for PA172 and PA174 | 2.5 gallon | included |
