SS304 or SS316 stainless steel
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.DN25 11851 nut
2. SS304 material
3. without pressure gauge
4. polish inside and outside