EF/V-IIB3
Detonation Flame Arrester, Detonation-proof foot valve for suction lines
Caractéristiques
Fonction et description
Protects the Suction Line in a Storage Tank
The PROTEGO® EF/V-IIB3 Detonation Detonation Explosion, die sich mit Überschallgeschwindigkeit fortpflanzt, gekennzeichnet durch eine Stoßwelle. -Safe Foot Valve protects the suction line in a storage tank. The virtually maintenancefree device is installed at the end of the emptying line within the tank. During suction, the valve opens at an approximate under-pressure of 30 mbar / 12 inch W.C. When the pump is turned off, the device functions as a check valve and prevents the line from emptying. This is very helpful when the pump is restarted.
Detonation-Proof Foot Valve Prevents Flame Transmission and Destruction
Combustible mixtures can form in filling and drain lines of storage containers that are not always filled with product. Ignition of explosive atmospheres can lead to highly accelerated pipe deflagration or detonations. The detonation-proof foot valve prevents the combustion from being transmitted into the tank and destroying it. The design of the foot valve ensures that the strainer is always filled with residual product. Together with the special valve design, this combination prevents flame flash back from the inside out.
For Explosion Group IIB3
The application limits for the device are a product vapor/air mixture temperature of up to +60°C / 140°F and an absolute pressure up to 1.1 bar / 15.9 psi. This covers all the possible operating conditions of empty lines for flammable liquids. The device protects against nearly all flammable liquids and is permitted for explosion group IIB3 (C MESG ≥ 0.65 mm). EU conformity according to the currently valid ATEX directive. Approvals according to other national/international regulations on request.
Dimensions
To select the nominal size (DN), please use the flow capacity chart on the following pages
| DN | 25 / 1" | 32 / 1¼“ | 40 / 1½“ | 50 / 2" | 65 / 2½“ | 80 / 3" | 100 / 4" | 125 / 5" | 150 / 6" | 200 / 8" | 250 / 10" |
| a | 125 / 4.92 | 125 / 4.92 | 135 / 5.31 | 135 / 5.31 | 160 / 6.29 | 160 / 6.29 | 200 / 7.87 | 235 / 9.25 | 260 / 10.24 | 400 / 15.75 | 450 / 17.72 |
| b | 85 / 3.35 | 85 / 3.35 | 85 / 3.35 | 85 / 3.35 | 95 / 3.74 | 95 / 3.74 | 125 / 4.92 | 130 / 5.12 | 135 / 5.31 | 175 / 6.89 | 200 / 7.87 |
| c | 155 / 6.10 | 155 / 6.10 | 180 / 7.09 | 180 / 7.09 | 210 / 8.27 | 210 / 8.27 | 250 / 9.84 | 310 / 12.20 | 365 / 14.37 | 480 / 18.90 | 565 / 22.24 |
Dimensions in mm / inches
Material selection for housing
| Design | A | B | C | D |
| Housing | Steel | Stainless Steel | Steel | Stainless Steel |
| Valve | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel |
| Gasket (Valve) | PTFE | PTFE | PTFE | PTFE |
| Gasket (Housing) | FPM | FPM | PTFE | PTFE |
| Strainer | Stainless Steel | Stainless Steel | Stainless Steel | Stainless Steel |
Special materials upon request
Selection of explosion group
| MESG | Expl. Gr. (IEC / CEN) | Gas Group (NEC) |
| > 0,90 mm | IIA | D |
| ≥ 0,65 mm | IIB3 | C |
Special approvals upon request
Specification of max. operating temperature
| ≤ 60°C / 140°F | Tmaximum allowable operating temperature in °C |
| - | Designation |
higher operating temperatures upon request
Flange connection type
| EN 1092-1; Form B1 |
| ASME B16.5 CL 150 F.F. |
other connections upon request
Flow Capacity Chart
The volume flow V in m³/h was determined with water according to DIN EN 60534 at a temperature Tn = 20°C and an atmospheric pressure pn = 1,013 bar, kinematic viscosity v = 10-6 m²/s
To avoid electrostatic charge of flammable liquids the maximum flow is limited (refer to TRGS 727, CENELEC-Report CLC/TR 60079-32-1).
