The PROTEGO® DZ/T is a high-performance in-line pressure or vacuum relief valve designed to protect tanks, vessels, and process systems from excessive overpressure or vacuum. Featuring PROTEGO’s patented 10% full-lift technology, the valve activates precisely at set points and opens fully with only a 10% pressure differential. It ensures reliable operation with extremely low leakage, preventing both product loss and environmental emissions. The modular design supports both pressure and vacuum protection and is ideal for hazardous area installations.
25–300
±3.5–60 mbar
10% overpressure
25 to 300
25 to 300
Housing: Steel, Stainless Steel, Hastelloy (coated options available) Valve Pallet: Aluminum, Stainless Steel, Titanium, PTFE Seal: FEP, PTFE, Metal-to-metal
Full lift type at 10% overpressure
Sample Text
DN 25/32: ±3.5 to ±60 mbar (±1.4 to ±24 in. W.C.) DN 40–300: ±2.0 to ±60 mbar (±0.8 to ±24 in. W.C.)
Liquid and gas storage tanks
Chemical, petrochemical, and pharma plants
Pressure-sensitive systems in industrial environments
Vacuum-protected pipelines or processing vessels
Systems requiring tight emission control
Hydrostatic Pressure Test
Dye Penetrant Testing (DPT)
Positive Material Identification (PMI)
Ultrasonic Testing (UT)
Magnetic Particle Inspection (MPI)
Radiography/X-Ray (if applicable)
Tensile, Hardness & Impact Testing
Hydrostatic Pressure Test
Dye Penetrant Testing (DPT)
Positive Material Identification (PMI)
Ultrasonic Testing (UT)
Magnetic Particle Inspection (MPI)
Radiography/X-Ray (if applicable)
Tensile, Hardness & Impact Testing
Hydrostatic Pressure Test
Dye Penetrant Testing (DPT)
Positive Material Identification (PMI)
Ultrasonic Testing (UT)
Magnetic Particle Inspection (MPI)
Radiography/X-Ray (if applicable)
Tensile, Hardness & Impact Testing
Hydrostatic Pressure Test
Dye Penetrant Testing (DPT)
Positive Material Identification (PMI)
Ultrasonic Testing (UT)
Magnetic Particle Inspection (MPI)
Radiography/X-Ray (if applicable)
Tensile, Hardness & Impact Testing
From forging and casting to machining, assembly, and testing — every step is managed under one roof to ensure consistent quality, faster lead times, and zero compromise.
Get in touch with our team for additional information on product pricing, technical data, project support and more.
