VD/SV-HRL
Flammendurchschlagsicherung Armatur, die an der Öffnung eines Gehäuses oder an den Verbindungsrohren eines Gehäusesystems angebracht ist und deren beabsichtigte Funktion darin besteht, den Durchfluss zu ermöglichen, aber die Übertragung einer Flamme zu verhindern. Pressure/Vacuum Relief Valvedeflagration- and endurance burning-proof
Dimensions
To select the nominal size (DN), please use the flow capacity charts on the following pages
| DN | 100 / 4" | 150 / 6" |
| a | 650 / 25.59 | 760 / 29.92 |
| b | 1000 / 39.37 | 1155 / 45.47 |
| c | 600 / 23.62 | 600 / 23.62 |
Dimensions in mm / inches
Selection of explosion group
| MESG | Expl. Gr. (IEC / CEN) | Gas Group (NEC) |
| > 0,90 mm | IIA | D |
Special approvals upon request
Flange connection type
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 R.F. |
other types upon request
Material selection for housing
| Design | A | B |
| Housing | Steel | Stainless Steel |
| Valve saets | Stainless Steel | Stainless Steel |
| Gasket | PTFE | PTFE |
| Weather hood | Steel | Stainless Steel |
| Flame arrester unit | A, B | B |
Special materials upon request
Material combinations of flame arrester unit
| Ausführung | A | B |
| FLAMEFILTER® cage | Steel | Stainless Steel |
| FLAMEFILTER® | Stainless Steel | Stainless Steel |
Special materials upon request
Material selection for pressure valve pallet
| Design | A | B | C | D |
| Pressure range [mbar] [inch W.C.] | +3.5 up to +5.0 +1.4 up to +2.0 | >+5.0 up to +14 >+2.0 up to +5.6 | >+14 up to +35 >+5.6 up to +14 | >+14 up to +35 >+5.6 up to +14 |
| Valve pallet | Aluminium | Stainless Steel | Stainless Steel | Stainless Steel |
| Sealing | FEP | FEP | Metal to Metal | PTFE |
Special material as well as higher set pressure upon request
Material selection for vacuum valve pallet
| Design | A | B | C | D |
| Vacuum range [mbar] [inch W.C.] | -2.0 up to -3.5 -0.8 up to -1.4 | <-3.5 up to -14 <-1.4 up to -5.6 | <+14 up to +35 <-5.6 up to -14 | <-14 up to -35 <-5.6 up to -14 |
| Valve pallet | Aluminium | Stainless Steel | Stainless Steel | Stainless Steel |
| Sealing | FEP | FEP | Metal to Metal | PTFE |
Special material as well as higher set vacuum 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”.
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