Feature:
| Features | Plain type, ductile cast iron, screwed | |
| Type | Plain type sight glass | |
| Specifications | Product type | Sight Glass_Plain | 
| Nominal size | 15A (1/2") - 50A (2") | |
| Application | Hot and cold water, oil | |
| End connection | JIS Rc screwed | |
| Max. pressure | 1 MPa | |
| Max. temperature | 150 degree(C) | |
| Max. thermal shock | 100 degree(C) | |
| Material | Body | Ductile cast iron | 
| Size | L (mm) | Weight (kg) | 
| 15A(1/2) | 80 | 0.7 | 
| 20A(3/4) | 90 | 0.8 | 
| 25A(1) | 115 | 1.4 | 
| 32A(1 1/4) | 127 | 2.1 | 
| 40A(1 1/2) | 140 | 2.7 | 
| 50A(2) | 162 | 5.2 | 
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