Heinrich 34-12CI 3-Way Single Acting Air Fixture Valve Cast Iron
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The Heinrich 34-12CI is a new, factory-original 3-way, single-acting pneumatic air fixture valve manufactured by Heinrich Co. (Racine, Wisconsin), designed as a dedicated vise jaw accessory for use with Heinrich air-actuated workholding fixtures and pneumatic vise systems. The cast iron body (CI suffix) provides rigidity and vibration damping suited to machine tool environments, while the integrated pivot treadle/rocker pad allows foot-operated actuation, freeing the operator's hands for part loading. Two brass 1/8 NPT male fittings are visible at the air supply and cylinder ports, and the base features four mounting-hole ears for secure floor or machine-frame attachment. This valve directs compressed air to a single-acting clamping cylinder and exhausts it upon release, making it the correct replacement or spare control component for Heinrich pneumatic vise and fixture assemblies.
Product Specifications
| Brand | Heinrich Co. |
| Part Number | 34-12CI |
| MSC Part Number | 09135120 |
| Valve Type | 3-Way, Single Acting |
| Body Material | Cast Iron |
| Actuation Type | Foot Treadle / Rocker Pad |
| Port Fitting Type | Brass Male NPT |
| Port Size | 1/8 in NPT |
| Number of Ports | 2 (Supply, Cylinder) |
| Mounting | 4-hole bolt-down base |
| Condition | New |
| Country of Origin | USA (Racine, WI) |