Material:Stainless Steel (SS304, SS316)
Size Range: DN300-DN1200
Connection Options:Flange
Working Pressure:1.0MPa-1.6MPa
Working Temperature:-53°C to 148°C
Sealing Options:PTFE, Graphite
Manufacturing Method:Forging, Carbon Steel
Applicable Medium:Oil, Gas, Water
Manufacturing Standard:ANSI, ASME, GB
The Vertical Check Valve is a unidirectional valve designed to prevent backflow in piping systems. Installed vertically, it operates automatically, relying on fluid pressure to open and close. This valve type is ideal for systems requiring reliable backflow prevention, especially in vertical pipelines, ensuring continuous and unidirectional flow.
Compact Vertical Design: Fits easily into vertical pipelines where space is limited.
Automatic Operation: Operates based on fluid pressure, requiring no manual intervention.
Low Maintenance: Minimal moving parts, resulting in reduced maintenance requirements and increased reliability.
Backflow Prevention: Prevents reverse flow effectively, protecting pumps and other upstream equipment.
Variety of Materials and Seals: Available in multiple materials to handle various fluids and temperatures.
Main Parts and Materials
| Part Name | material |
| Body | Cast iron, ductile iron, carbon steel |
| Flow guide | Cast iron, ductile iron, carbon steel |
| Seat | Bronze, chrome stainless steel |
| Disc | Bronze, chrome stainless steel |
| axis | Bronze, chrome stainless steel |
| spring | stainless steel |
The main shape and connection dimensions
| model | Nominal diameter | D1 | D2 | D3 | N-ΦD | L | |||||
| 1.0 MPa | 1.6 MPa | 1.0 MPa | 1.6 MPa | 1.0 MPa | 1.6 MPa | 1.0 MPa | 1.6 MPa | ||||
| H42H | DN300 | 370 | 400 | 410 | 460 | 12-13 | 12-28 | 181 | |||
| H42H | DN350 | 429 | 460 | 470 | 520 | 16-23 | 16-28 | 184 | |||
| H42H | DN400 | 480 | 515 | 525 | 580 | 16-28 | 16-31 | 191 | |||
| H42H | DN450 | 530 | 565 | 585 | 640 | 20-28 | 20-31 | 203 | |||
| H42H | DN500 | 582 | 620 | 650 | 715 | 20-28 | 20-34 | 219 | |||
| H42H | DN600 | 682 | 725 | 770 | 810 | 840 | 20-31 | 20-37 | 222 | ||
| H42H | DN700 | 794 | 840 | 840 | 895 | 910 | 24-31 | 24-37 | 280 | ||
| H42H | DN800 | 901 | 950 | 950 | 1015 | 1025 | 24-34 | 24-40 | 356 | ||
| H42H | DN900 | 1001 | 1050 | 1050 | 1125 | 1125 | 28-40 | 28-40 | 368 | ||
| H42H | DN1000 | 1112 | 1160 | 1170 | 1230 | 1255 | 28-43 | 28-43 | 432 | ||
| H42H | DN1200 | – | 1380 | 1390 | 1455 | 1485 | 32-49 | 32-49 | 524 | ||
Water Supply Systems: Used to prevent backflow in water distribution lines and pumping systems.
HVAC Systems: Controls flow direction in heating, ventilation, and air conditioning systems.
Chemical Processing: Ensures unidirectional flow of chemicals in processing lines.
Oil and Gas Pipelines: Prevents backflow in vertical sections of oil, gas, and other fluid pipelines.
Wastewater Treatment: Used in drainage and wastewater systems to prevent reverse flow of contaminated water.
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