Low Resistant Slow Closing Check Valve
Low Resistant Slow Closing Check Valve
Low Resistant Slow Closing Check Valve
Low resistant slow closing check valve is utilized for drainage system. The check valve is installed at the exit of pump to avoid refluence of medium and eliminate destructive water hammer. It can also decrease the pressure of water hammer effectively to ensure safety when check valve closed.
Characteristics：
1. Utilizing hydraulic slow closing installation
2. Light weight, large aperture, energy conservation
3. Reliable seal, wearing resistance, long service life, no vibration, no noise, etc.
Standards：
Design: GB/T 12233
Face to Face : GB/T 12221
Flange: JB/T 79,HG20592,GB9113,ANSI
Test & Inspection: JB/T 9092,GB/T13927
Pressure & Temperature: GB/T 9131
Marking: GB/T 12220
Model No.
| Materials | Model No. |
| HT200 | HH44H/X-10,HH44H/X-16 |
| WCB | HH44H/X-16C,HH44H/X-25 |
Components Materials：
| Components | Body & Bonnet | Disc | Stem |
| Materials | Gray cast iron | rubber | Stainless steel |
Main Dimensions：
| Nominal Diameter | 40 | 50 | 65 | 80 | 100 | 125 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 800 |
| L | 200 | 230 | 290 | 310 | 350 | 400 | 480 | 500 | 600 | 700 | 800 | 900 | 1000 | 1100 | 1300 | 1400 | 1500 |
| H | 300 | 300 | 320 | 354 | 350 | 380 | 500 | 580 | 670 | 730 | 820 | 920 | 950 | 1100 | 1200 | 1550 | 1700 |
| B | 220 | 270 | 290 | 300 | 320 | 340 | 410 | 450 | 550 | 580 | 630 | 700 | 800 | 900 | 990 | 1120 | 1300 |
