This is a variable pressure relief valve, sometimes referred to as a "Bunging" or "Spunding" valve, traditionally used for controlled carbonation of products over time. Its operating range is 0.2 - 2.2 bar (2.9 - 30.9 PSI) however it is not recommended for use beyond the pressure rating of the vessel. Clear polycarbonate housing.
1. 1.5" triclamp
2. SS304 material
3. without pressure gauge
4. polish inside and outside
5. 38mm or 25mm pipe outter diameter optional, clamp ferrule with the same 50.5mm.