+86 186 3170 8948
+86 186 3170 8948
Check Valve
The Ball Check Valve uses a ball as the opening and closing element. It relies on the pressure of the flowing medium to push the ball, allowing unidirectional flow and effectively preventing backflow.
When the medium flows in the forward direction, the ball is pushed away from the valve seat, allowing smooth passage of the medium.
When the flow stops or a reverse flow tendency occurs, the ball automatically returns to the valve seat under the influence of gravity or reverse pressure, forming a reliable seal.
Product Description
Used in municipal water supply, wastewater treatment plants, and drainage systems, it prevents water backflow and reduces contamination risks. The Ball Check Valve for Water and Wastewater Applications is also suitable for industrial wastewater treatment and rainwater recycling systems.
In applications involving corrosive media, solvent transport, and oil pipelines, the corrosion-resistant ball check valve ensures high chemical resistance.
High-quality iron casting ball check valves are used in pharmaceutical liquid transport.
In HVAC, cooling water circulation, and fire protection networks, the low-pressure drop ball check valve reduces energy consumption, prevents backflow, and ensures the safe operation of piping systems.
Technical Parameter
Part & Materials
| No | Part | Material |
| 1 | Body | Ductile Iron GGG50 |
| 2 | Ball | CS/DI+NBR |
| 3 | O-Ring | NBR |
| 4 | Bonnet | Ductile Iron GGG50 |
| 5 | Bolts | A2-70 |
| 6 | Washer | Stainless Steel |
| 7 | Washer | PTFE |
| 8 | Plug | Carbon Steel |
Dimensions(mm)
| DN | L | D | C | B | n-d | b | f | H | |||||
| PN10 | PN16 | PN10 | PN16 | PN10 | PN16 | PN10 | PN16 | PN10 | PN16 | ||||
| DN40 | 180 | 150 | 110 | 84 | 4-19 | 19 | 3 | 85 | |||||
| DN50 | 200 | 165 | 125 | 99 | 4-19 | 19 | 3 | 115 | |||||
| DN65 | 240 | 185 | 145 | 119 | 4-19 | 19 | 3 | 124 | |||||
| DN80 | 260 | 200 | 160 | 133 | 8-19 | 19 | 3 | 138 | |||||
| DN100 | 300 | 220 | 180 | 154 | 8-19 | 19 | 3 | 162 | |||||
| DN125 | 350 | 250 | 210 | 184 | 8-19 | 19 | 3 | 202 | |||||
| DN150 | 400 | 285 | 240 | 210 | 8-23 | 19 | 3 | 228 | |||||
| DN200 | 500 | 340 | 295 | 265 | 8-23 | 12-23 | 20 | 3 | 298 | ||||
| DN250 | 600 | 405 | 350 | 355 | 319 | 12-23 | 12-28 | 22 | 3 | 368 | |||
| DN300 | 700 | 460 | 400 | 410 | 370 | 12-23 | 12-28 | 24.5 | 4 | 438 | |||
| DN350 | 800 | 520 | 460 | 470 | 429 | 16-23 | 16-28 | 26.5 | 4 | 585 | |||
| DN400 | 900 | 580 | 515 | 525 | 480 | 16-28 | 16-31 | 28 | 4 | 660 | |||
| DN500 | 1100 | 715 | 620 | 650 | 582 | 609 | 20-28 | 20-34 | 31.5 | 4 | 850 | ||
Technical Data
| No | Description | Specification |
| 1 | Nominal Dia | DN40-DN500 |
| 2 | Nominal Pressure | PN10&PN16 |
| 3 | Valve Design Standard | DIN3202 F6 |
| 4 | Face to Face Standard | EN558&ISO5752 Series-48 |
| 5 | Flange Standard Conformity | DIN2533 |
| 6 | Testing Standard | DIN3230 |
| 7 | Expoxy Coating | Epoxy powder coating with minimum thickness of 250 microns inside and outside. |
| 8 | Testing Pressure | |
| Shell Test | PN*1.5Times | |
| Sealing Test | PN*1.1Times | |
| 9 | Working Temperature(Max) | 120℃ |
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Why Choose Us
Quality Assurance
Our valves meet product certifications from different countries (ASME, DIN, SNI, etc.).
Production Scale
We have well-established production and quality control processes to ensure scale and meet customer delivery deadlines
Raw Material Casting Scale
We have our own raw material factory with casting inventory to guarantee production output
Botou Yaxing Fluid Equipment Co., Ltd. specializes in providing design, development, and manufacturing services for the water valve industry. We produce high-quality valve products.
+86 186 3170 8948
No.4 Road Botou Industrial Zone, Cangzhou City Hebei Province, China
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