 | 37202900 | BV | Check valve kit | | | | |
 | 37000400 | VTA932 | Exchange kit, 35 - 60°C | | VTR320 | |  |
 | 37001500 | VTA932 | Exchange kit, 45 - 65°C | | VTA320 | |  |
 | 37001600 | VTA932 | Exchange kit, 50 - 75°C | | VTA320 | |  |
 | 37100200 | VTA952 | Exchange kit series VTA520, 45 - 65°C | | | |  |
 | 37100300 | VTA952 | Exchange kit series VTA520, 50 - 75°C | | | |  |