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Type 06820
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Safety Valves, angle type, stainless steel, type tested, TÜV-SV.1130. S/G/L Standard safety valve metal to metal seated, "cleaned and degreased for oxygen service" closed bonnet, gastight cap Inlet: male thread type G (BSPP) acc. to ISO 228/1 Outlet: female thread type G (BSPP) acc. to ISO 228/1 Part No. 06820.X.000000M (Pmax 550.0 bar) Part No. 06820.X.000000H (Pmax 550.0 bar) stellited version with gastight cap Available options - on request only: - Flange- or NPT- connection for in- and outlet - Inlet: Cone & thread connection for d0 6mm - 9M 13/16''-16 UN or 12M 3/4'' - 14NPS - Special materials such as Monel, Hastelloy or Duplex for medium wetted parts Applications: Provided as safety device for protection against excessive pressure in gas cylinders and pressure vessels. Approved for gases, vapours and liquids. Working temperature: -270°C / -454°F (3K) up to +400°C / +752°F (673K) Pressure-temperature must be observed, suitable for horizontal installation up to 300 bar |
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| Type 06820 | Technical data | |
| Nominal size | GW | 3/4 |
| Orifice | d0 | 6.0 |
| Dimension code | .X. | 0633 |
| Set pressure range | bar | 30-550 |
| Outlet | GA | 3/4 |
| Height | H1 | 247 |
| Length | L1 | 45 |
| Length | L2 | 29 |
| Length | A1 | 16 |
| Weight 06820 | ca. kg | 2.9 |
| Coeff. of discharge gases, vapours | αw | 0.52 |
| Coeff. of discharge fluids | αw | 0.42 |
| Dimensions in mm. |
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Discharge capacities Calculation of flow rate acc. to AD2000-Merkblatt A2 / DIN EN ISO 4126-1 Medium: A = Saturated steam in kg/h B = Air in m³/h at 0°C and 1013,25 mbar C = Water in kg/h at 20°C The capacity indicated below is for a fully opened valve. d0 - orifice A0 - flow area |
| Set pressure in bar (ü) | GW | 3/4 | ||
| d0 (mm) | 6.0 | |||
| A0 (mm²) | 28.27 | |||
| Medium | A | B | C | |
| 30.0 | 254 | 350 | 3473 | |
| 40.0 | 336 | 468 | 4011 | |
| 60.0 | 503 | 708 | 4912 | |
| 80.0 | 670 | 953 | 5672 | |
| 100.0 | 845 | 1203 | 6341 | |
| 120.0 | 1032 | 1451 | 6947 | |
| 140.0 | 1230 | 1703 | 7503 | |
| 160.0 | 1437 | 1952 | 8021 | |
| 180.0 | 1688 | 2194 | 8508 | |
| 200.0 | 2215 | 2429 | 8968 | |
| 220.0 | - | 2659 | 9406 | |
| 240.0 | - | 2893 | 9824 | |
| 260.0 | - | 3133 | 10225 | |
| 280.0 | - | 3374 | 10611 | |
| 300.0 | - | 3614 | 10983 | |
| 320.0 | - | 3854 | 11344 | |
| 340.0 | - | 4094 | 11693 | |
| 360.0 | - | 4334 | 12032 | |
| 380.0 | - | 4575 | 12361 | |
| 400.0 | - | 4815 | 12683 | |
| 420.0 | - | 5055 | 12996 | |
| 440.0 | - | 5295 | 13302 | |
| 460.0 | - | 5535 | 13601 | |
| 480.0 | - | 5776 | 13893 | |
| 500.0 | - | 6016 | 14180 | |
| 520.0 | - | 6256 | 14460 | |
| 550.0 | - | 6616 | 14872 | |
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Pressure-Temperature Rating |
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