![Weil Mclain 635-100-003 Automatic Air Vent, 1/2 in. FNPT specifications — New England Supply House [NESH-SPECTABLE-V1]](http://newenglandsupplyhouse.com/cdn/shop/files/nesh-635100003-specs.png?v=1794034519&width=1445)
The Weil Mclain 635-100-003 is an automatic air vent with a 1/2 in. FNPT connection. It mounts on the heating system to automatically release trapped air, helping prevent airlock and improve circulation through the boiler and piping. This is a genuine Weil Mclain replacement part. Confirm this part number against your equipment's parts list before ordering.
Specifications
| Part Number | 635-100-003 |
|---|---|
| Brand | Weil Mclain |
| Type | Automatic Air Vent |
| Connection Size | 1/2 in. FNPT |