Pressure, sorted — big-port edition.
A 4" tri-clamp cap with a built-in gas post and pressure relief valve. Pressurise or purge through the gas post, and let the PRV vent automatically if pressure climbs too high (around ±4 PSI tolerance). Ideal for closing and pressurising a 4" lid port.
Key points
- Gas post — pressurise or purge with CO₂
- Built-in PRV (~±4 PSI tolerance)
- 4" tri-clamp connection
- 304 stainless, sanitary
Note: ships without a 4" band clamp — add one separately.
See all 4" Tri-Clamp Fittings
Specifications
| Connection | 4" Tri-clamp |
| PRV | Built-in (±4 PSI tolerance) |
| Gas post | Yes |
| Material | 304 stainless steel |