Check Valves-ANSI
A swing check valve ensures unidirectional flow in a pipeline. Fluid pressure pushes the disc against the seat, providing reliable backflow protection. For enhanced operation, a lever with a weight can be installed to assist the closing mechanism.
Key Characteristics of Check Valves
Check valves are self-acting, non-return valves that allow fluid to flow in one direction only, reliably avoiding backflow without requiring external control. Available in various designs -including swing, piston, or dual-plate types- these valves can be installed both horizontally and vertically, covering nominal sizes up to DN 900.
Automatic backflow prevention
All valve types close automatically when fluid pressure drops or backflow occurs, ensuring reliable protection.
Optimized flow (swing type)
The unguided disc allows full, unobstructed flow, minimizing pressure losses and making it ideal for high-flow applications.
Precise control under high pressure (piston type)
Guided piston or ball discs provide accurate seating and reliable performance under high pressures and flow rates, offering robust and durable operation.
Haeger ANSI Swing Check Valve according to ANSI Standard
Data Sheets
Size: 2” to 30”
LBS: 150, 300, 600, 900, 1500, 2500
Body Materials: 1.0619, A216 WCB, 1.4408, 1.4306, 1.4404, 1.1138, 1.4308, 1.5419, 1.7357, 1.7379, CF8M, CF3M, CF3, WC1, WC6, WC9, LCB, LCC
Description:
Face-to-face dimensions comply with ASME B16.10. The valve operates fully autonomously, opened by fluid flow. Connections are available as flanged ends (RF, ASME B16.5) or butt weld ends (ASME B16.25) and the valve features a bolted bonnet design.
- Disc available in various materials
- Depending on the material selected, check valves are suitable for water, steam, oil, gas, or other aggressive media
- Special coating available according to customer requirements
- Operation and maintenance manuals for gate valves can be provided in various languages
- EAC TR-TS conformity declarations of the Customs Union available independently of specific orders, for export and use of products in the Russian Federation, Belarus, or Kazakhstan (EAC), valid for 1, 3, or 5 years
- EAC GOST TR TS 010/2011 (Machinery Directive) or EAC GOST TR TS 032/2013 for valves DN25 and larger
- Valve passport TP according to GOST 2.601 – 2006
- TÜV certifications (3.2)
Haeger ANSI Spring-Loaded Check Valve
Data Sheets
Size: 1/2” to 12”
LBS: 150, 300, 600, 900
Body Materials: 1.0619, A216 WCB, 1.4408, 1.4306, 1.4404, 1.1138, 1.4308, 1.5419, 1.7357, 1.7379, CF8M, CF3M, CF3, WC1, WC6, WC9, LCB, LCC
Description:
Face-to-face dimensions comply with ASME B16.10. This industrial valve operates completely autonomously and opens automatically with the fluid flow. Connections are available as flanged ends (RF, ASME B16.5) or butt weld ends (ASME B16.25), and the valve features a bolted bonnet design.
- Disc (cone) available in various materials
- Spring also available in INCONEL or equivalent materials
- Depending on the material selected, check valves are suitable for water, steam, oil, gas, or other aggressive media
- EAC TR-TS conformity declarations of the Customs Union available independently of specific orders, for export and use of products in the Russian Federation, Belarus, or Kazakhstan (EAC), valid for 1, 3, or 5 years
- EAC GOST TR TS 010/2011 (Machinery Directive) or EAC GOST TR TS 032/2013 for valves DN25 and larger
- Valve passport TP according to GOST 2.601 – 2006
- TÜV certifications (3.2)
Haeger Dual Plate Check Valve (Wafer Type)
Data Sheets
Size: 2” to 24”
LBS: 150, 300, 600, 900
Body Materials: 1.0619, A216 WCB, 1.4408, 1.4306, 1.4404, 1.1138, 1.4308, 1.5419, 1.7357, 1.7379, CF8M, CF3M, CF3, WC1, WC6, WC9, LCB, LCC
Description:
Face-to-face dimensions comply with ASME B16.10. This valve operates fully autonomously, requires no manual intervention, and opens through the flow of the medium. All valves are supplied with a declaration of conformity. Connection options include flanged ends (RF, ASME B16.5) or welded ends (ASME B16.25), and the valve features a bolted bonnet design.
- Disc or plates available in various materials
- Spring also available in INCONEL or equivalent materials
- Depending on the selected material, dual plate check valves are suitable for water, steam, oil, gas, or other aggressive media
- EAC TR-TS conformity declarations of the Customs Union available independently of specific orders, for export and use of products in the Russian Federation, Belarus, or Kazakhstan (EAC), valid for 1, 3, or 5 years
- EAC GOST TR TS 010/2011 (Machinery Directive) or EAC GOST TR TS 032/2013 for valves DN25 and larger
- Valve passport TP according to GOST 2.601 – 2006
Industry - Check Valves (Spring Loaded)
A spring-loaded check valve closes automatically when pressure falls below a defined level and reopens with the support of its internal spring. It operates completely autonomously.
It can be installed horizontally or vertically and can be fitted with a control plug for more precise flow regulation. Nominal sizes range from ½” to 12”, with flanged or welded ends according to ASME standards. Upon request, Inconel materials and heavy-duty lugs for larger sizes are also available.
- Many years of experience in project business
- Personal advice and customized solutions
- High quality standards and reliability
- Wide product portfolio for various applications
Industry - Check Valves (Dual Plate)
To prevent backflow in pipelines, a disc is positioned between two flanges, allowing flow in only one direction. This dual plate check valve requires no manual operation or adjustments, as it functions entirely automatically.
A key advantage is its low opening pressure. The valve opens easily with the aid of a spring, which is also available in Inconel. When the pressure decreases, the valve closes automatically. The dual plate check valve must be installed horizontally in the pipeline. An arrow on the valve indicates the correct flow direction.
