Check Valves
H74 Wafer Dual Plate Swing Check Valve
- Ultra-Thin, Space-Saving: With a face-to-face length of only 1/4 to 1/8 that of traditional flanged check valves, it is small, lightweight, and significantly reduces costs, making it ideal for locations with limited installation space.
- Dual Plate Design, Anti-Water Hammer: Two semi-circular discs, assisted by springs, close rapidly to effectively eliminate water hammer and ensure silent operation.
- Convenient Installation: Utilizes a wafer-style connection and can be installed both horizontally and vertically with great ease.
- Low Flow Resistance: Provides a wide flow path when fully open, resulting in minimal pressure loss.
- Reliable Sealing: The valve seat can be made from NBR, EPDM, or metal to meet the requirements of different media and temperatures.
The H74 Wafer Dual Plate Swing Check Valve is an ultra-thin check valve with a novel and highly compact structure. It primarily consists of a body, two semi-circular discs (plates), and springs, and is installed by being clamped between two flanges. It operates by using fluid pressure to push the two discs open; once the medium passes, the discs close rapidly under the force of the springs and fluid back-pressure. The dual-plate design results in a small opening angle and a short closing stroke, making it extremely effective at reducing and preventing water hammer, serving as an ideal replacement for traditional swing check valves.
PN1.0/1.6/2.0/4.0 MPa
| DN | L (PN1.0/1.6/2.0) | L (PN4.0) | D | D1 | Bolts | Thread |
|---|---|---|---|---|---|---|
| 50 | 14.5 | 14.5 | 109 | 25 | 4 | M16 |
| 65 | 14.5 | 14.5 | 129 | 38 | 4 | M16 |
| 80 | 14.5 | 14.5 | 144 | 46 | 8 | M16 |
| 100 | 14.5-16 | 16 | 164 | 71.5 | 8 | M16-M20 |
| 125 | 16-19 | 19 | 194-196 | 95 | 8 | M16-M24 |
| 150 | 19-29 | 29 | 221-226 | 114 | 8 | M20-M24 |
| 200 | 29 | 29 | 275-286 | 140 | 8-12 | M20-M27 |
| 250 | 29-38 | 38 | 330-343 | 188 | 12 | M20-M30 |
| 300 | 38 | 41 | 380-403 | 216 | 12 | M20-M33 |
| 350 | 41 | 41 | 440-460 | 263 | 16 | M20-M30 |
| 400 | 51 | 51 | 492-517 | 305 | 16 | M24-M33 |
| 500 | 51 | 65 | 596-627 | 406 | 20 | M27-M36 |
| 600 | 65-70 | 70 | 698-737 | 482 | 20 | M30-M39 |
No drawing available.
