Turn a 10" opening into a working 4" port.
This solid 304 stainless concentric reducer takes a 10" Tri-Clamp opening down to 4", so you can mount standard 4" TC gear — still columns, condenser hardware, sight glasses, butterfly valves or a simple blind cap — directly on the manway or top port of a commercial-scale tank. No adapters, no improvising.
Key points
- 10" → 4" — clamps onto any standard 10" TC ferrule and presents a standard 4" TC connection on top.
- Opens up the 4" ecosystem — pair it with the 4" Band Clamp, 4" Tri-Clamp Gasket and any 4" TC accessory.
- One-piece, heavy-gauge 304 — sanitary finish, clamps and seals like any standard Tri-Clamp fitting.
Specifications
| Bottom connection | 10" Tri-Clamp |
| Top connection | 4" Tri-Clamp |
| Type | Concentric reducer, one-piece construction |
| Material | 304 stainless steel, sanitary finish |
| Scope | Clamps and gaskets not included — use standard 10" and 4" TC clamps and gaskets |
Complete the installation: 10" Band Clamp + 10" Gasket on the bottom · 4" Band Clamp + 4" Gasket on top.
Smaller port? See the 4" to 2" Concentric Reducer · More spare parts · All 10" TC fittings.