| OB-2000 |
Diaphragm type / Large capacity / For heating |
| OB-30 |
Small and compact / For heating / Screwed |
| OB-30U |
Small and compact / For heating / Screwed (Union joint) |
| OB-31 |
Small and compact / For cooling Screwed |
| OB-31U |
Small and compact / For cooling / Screwed (Union joint) |
| OB-1 |
Double valve structure / For heating / Screwed |
| OB-1G |
Double valve structure / For heating / Screwed |
| OB-2 |
Double valve structure / For heating / Flanged |
| OB-2G |
Double valve structure / For heating / Flanged |
| OB-3 |
Double valve structure / For cooling / Screwed |
| OB-3G |
Double valve structure / For cooling / Screwed |
| OB-4 |
Double valve structure / For cooling / Flanged |
| OB-4G |
Double valve structure / For cooling / Flanged |
