Midland Metal Mfg. 20339 Poly‑Flo Bulkhead Union — 3/8‑in
The 20339 Poly‑Flo Bulkhead Union from Midland Metal Mfg. provides leak-free connectivity through panels or wall partitions, allowing secure and reliable fluid transfer using 3/8″ OD tubing. Made of durable brass with a flareless bulkhead configuration, it installs quickly without fittings, ensuring robust performance for refrigeration, pneumatic, and fluid control systems.
Item Attributes
| Material | Brass |
| Length | Approx. 1.31″ |
| Temperature Range | –40 °F to +150 °F |
| Pressure Rating | 150 psi |
| Part Number | 20339 |
| Product Type | Bulkhead Union — Flareless Brass Fitting |
| Thread Size | 1/2‑24 (bulkhead nut) |
| Connection Size | 3/8″ OD tubing (both ends) |
| Mounting Style | Bulkhead (through-panel) |
| Fitting Type | Union, flareless design |
| Hex Size | 0.69″ |
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