DZ/EA-F
Pressure or Vacuum Relief Valve, In-Line With ETFE Lining

Features
10% Technology
Extreme Tightness
Optimum Pressure Maintenance
Inner Lining
For Over- and Underpressure
Compact Design
High Flow Capacity
Sturdy Housing Design
Spring-Loaded

Pressure or Vacuum Relief Valve for High System Pressures

Full Lift Technology

Advanced Manufacturing Technology
Dimensions
To select the nominal size Nominal size The nominal size is an alphanumeric designation of size for components in a piping system, used for reference purposes, comprising the letters DN followed by a dimensionless integer that is indirectly related to the physical size of the bore or outside diameter of the connections, expessed in millimeters. (DN), please use the flow capacity chart on the following page
| DN | 50 / 2" | 80 / 3" | 100 / 4" | 150 / 6" |
| a | 168 / 6.61 | 180 / 7.09 | 200 / 7.87 | 228 / 8.98 |
| b | 167 / 6.57 | 177 / 6.97 | 200 / 7.87 | 232 / 19.13 |
| c | 615 / 24.21 | 785 / 30.91 | 915 / 36.02 | 1160 / 45.67 |
| d | 200 / 7.87 | 240 / 9.45 | 280 / 11.02 | 335 / 13.19 |
Dimensions in mm / inches
Material for housing
| Design | B |
| Housing Housing A housing is a solid shell, which surrounds a content, either protecting the content from external influences, or protecting the environment from the content. | Steel |
| Lining | ETFE |
| Cover | Steel |
| Valve seat Valve seat The valve seat is a component on which the valve pallet rests when the valve is closed. | Hastelloy |
| Guiding disc | PTFE |
| Valve pallet | A |
Semi-conductive material and special material (e.g. PFA) upon request
Special materials upon request
Material selection for valve pallet
| Design | A |
| Pressure range [mbar] [inch W.C.] | ±60 up to ±500 ±24 up to ±200 |
| Valve pallet | Hastelloy |
| Spindle / Guiding | Hastelloy |
| Sealing | Metal to Metal |
Special materials upon request
Devices with higher set pressure or vacuum are available upon request, for lower set pressure or vacuum refer to type DZ/EA
Flange connection type
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 R.F. |
other connections upon request
Flow Capacity Chart

The flow capacity charts have been determined with a calibrated and TÜV certified flow capacity test rig. Volume flow V in (m³/h) and CFH refer to the standard reference conditions of air ISO 6358 (20°C, 1bar). For conversion to other densities and temperatures refer to Sec. 1: “Technical Fundamentals”.


Detail X

Tank connection for pressure relief function

Tank connection for vacuum relief function
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