PURPOSE AND SCOPE OF APPLICATION
Explosion-proof coupling NVV is applied for the connection of the equipment and conduit elements of the same diameter. It enables users to solve their most difficult problems that occur in the process of installation of pipe conduit.
Scope of application - hazardous indoor and outdoor areas in accordance with explosion protection marking, GOST 30852.13-2002 (IEC 60079-14:1996) and areas hazardous with combustible dust ignition, as per GOST IEC 61241-3-2011, dangerous production facilities of I, II, III, IV hazard classes under supervision of Rostekhnadzor and national supervisory bodies of the CU and the CIS countries.
Marking:
1Ex db IIC Gb 1Ex e IIC Gb 2Ex nR IIC Gc Ex tb IIIC Db Ex db IIC Gb U Ex e IIC Gb U Ex nR IIC Gc U Ex tb IIIC Db U РВ Ex db I Mb РП Ex e I Mc Ex db I Mb U Ex e I Mc U
| Dimension type | Thread, М | H min., mm | Mass, kg |
| NVV02 | 1/4" | 33 | 0,03 |
| NVV01 | 3/8" | 33 | 0,05 |
| NVV1 | 1/2" | 39 | 0,09 |
| NVV2 | 3/4" | 39 | 0,08 |
| NVV3 | 1" | 51 | 0,15 |
| NVV4 | 1 1/4" | 51 | 0,27 |
| NVV5 | 1 1/2" | 51 | 0,27 |
| NVV6 | 2" | 51 | 0,45 |
| NVV7 | 2 1/2" | 65 | 0,65 |
| NVV8 | 3" | 65 | 0,80 |
| NVV10 | 4" | 65 | 1,0 |
| NVV12 | 5" | 65 | 2,3 |
| NVV14 | 6" | 65 | 2,8 |
| NVV | X | X | X | / | Х | – TU 3400-007-72453807-07 | |||
| Type of the element | |||||||||
| Dimension type | |||||||||
| Thread type: taper inch NPT - N; metric GOST 24705 - M; taper pipe GOST 6211-81 - R; Pipe cylindrical GOST 6357-81 - G | |||||||||
| Material: nickel-plated brass - NK; stainless steel - N; galvanized steel code - О | |||||||||
| Options, accessories and versions |
EXAMPLE: NVV3MN-TU 3400-007-72453807-07
