Check valves, swing check valves
A simple check valve allows fluid to flow in one direction with a low opening pressure, while closing off the flow in the opposite direction.
It is installed in the system whenever backflow of the medium must be prevented for any reason.
They are often installed downstream of pumps (centrifugal pumps) to protect the pump against backflow.
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Check valves, swing check valves – product group overview
A simple check valve allows fluid to flow in one direction with a low opening pressure, while closing off the flow in the opposite direction.
It is installed in the system whenever backflow of the medium must be prevented for any reason.
They are often installed downstream of pumps (centrifugal pumps) to protect the pump against backflow and water hammer.
By design, there are flanged, butt-weld, threaded, wafer (between flanges), spring-loaded and counterweighted versions
Material grades: carbon steel, stainless steel, acid-resistant stainless steel; special materials: copper, bronze, Hastelloy
Suppliers and product catalogues for this product group
Supplier product information
Check valves
Applications
- For liquids, vapours and gases in industrial and heating installations
Design
- wafer type (between flanges); body material: steel, stainless steel, acid-resistant stainless steel, bronze
- connection: between EN 1092-1 B1 flanges
Ritag wafer check valve, type SR, DN15-200 PN 6-40, ANSI 150-300
Ritag high-pressure wafer check valve HSR DN15-200 PN 63-163, ANSI 600-2500
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RITAG wafer check valveType: SR 20.40-St, 20.40, 22.40, SR 30.40 DN 15-200 PN 6-40Swing check valves
Applications
- ZRK – for industrial ventilation and cooling systems; ZRD – for process systems
Design
- wafer type (between flanges); body material: steel, stainless steel, acid-resistant stainless steel, bronze
- connection: between EN 1092-1 flanges
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RITAG wafer swing check valveRITAG wafer swing check valve
TVT (DOO Termovent)
TVT flanged and butt-weld check valves
TVT flanged and butt-weld check valves: CLEN to EN 16767, DN 15-350 PN 16-160; CLBS to BS 1868, 2″–14″ Class 150-900
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TERMOVENT flanged and butt-weld check valvesTERMOVENT flanged and butt-weld check valvesTVT flanged and butt-weld swing check valves
Applications
- chemical industry, general industry, power plant engineering, oil refining
Design
- to EN 16767, with flanged connection to EN 1092-1 and butt-weld connection to EN 12627
