china type b flexible coupling manufacturer
Compliant with the EN 877, GB/T 12772
A type b flexible coupling is a kind of mechanical grooved coupling used to connect two sections of pipe.
Widely used in municipal engineering, industry, construction, water conservancy and other fields, it has the advantages of convenient installation, easy maintenance, compact and lightweight structure, and high reliability.
HWKG provides following type b flexible coupling
The surfaces of washers, screws, and nuts are galvanized and show no red rust after a neutral salt spray test of not less than 48 hours.
type b flexible coupling (with rubber ring)
Better sealing, reducing vibration and impact.
type b flexible coupling specification table
| Part NO. | Size | D | t | L | Bolt | Part NO. | |||||||
| Material | |||||||||||||
| W2 | W4 | W5 | |||||||||||
| DN50 | 2″ | 70mm | 0.45mm | 41mm | M8 | B-DN50W2 | B-DN50W4 | B-DN50W5 | |||||
| DN75/DN80 | 3″ | 94mm | 0.45mm | 45mm | B-DN75W2 | B-DN75W4 | B-DN75W5 | ||||||
| DN100 | 4″ | 124mm | 0.5mm | 45mm | B-DN100W2 | B-DN100W4 | B-DN100W5 | ||||||
| DN125 | 5″ | 152mm | 0.5mm | 54mm | B-DN125W2 | B-DN125W4 | B-DN125W5 | ||||||
| DN150 | 6″ | 178mm | 0.5mm | 54mm | B-DN150W2 | B-DN150W4 | B-DN150W5 | ||||||
| DN200 | 8″ | 230mm | 0.6mm | 66mm | M10 | B-DN200W2 | B-DN200W4 | B-DN200W5 | |||||
| Material | Band | Bolt | Nut | Gasket | Bridge | Sealing Ring |
| W2 | 304 | Carbon steel | Carbon steel | Carbon steel | 304 | EPDM/NBR |
| W4 | 304 | 304 | 304 | 304 | 304 | EPDM/NBR |
| W5 | 316 | 316 | 316 | 316 | 316 | EPDM/NBR |