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Fasani Bolted Bonnet Check Valves
Bolted Bonnet Check Valves
The bolted bonnet type valves are manufactured to guarantee the highest performance in the widest spectrum of oil and gas applications
Fasani Bolted Bonnet Check Valves


ASME B31.1, India Boiler Registration, NACE
End Connection
Butt Weld, Flanged
Waste to Energy, Steam turbine, Steam Headers, Pumps, Valves & Manifolds, HRSG, High Temp, Boilers, Biomass Boiler and Power Boiler, Balance of Plant, Boiler
Body Design
Top Entry, Long Pattern
Stainless Steel, Metal, Duplex, Carbon Steel, Alloy, Stainless, Steel
Operating Temperature
Standard Temperature (-40 - 250F), Standard Temperature, High Temperature, Greater Than 400 F (204 C)
Pressure Class
Process Connection Type
300RF, 600RF, 900RF, CL150RF, CL300RF, CL600RF, Flanged, Weld end, 2500RF, 150RF, 1500RF
Seat/Seal Type
Metal-to-Metal, Swing
Shutoff Class
Class V (FCI 70-2)
ASME B16.34
Valve Size
5 inch, NPS 2 / DN 50, 6 inch (DN150) and Larger, NPS 6 / DN 150, NPS 4 / DN 100, NPS 3 / DN 80, NPS 2-1/2 / DN 65
Valve Size Standard
Valve Type
Engineered Product


  • Swing check valves can fit on both horizontal and vertical (up-flow) piping.
  • Lift check valves are designed to be installed on horizontal piping or, with the aid of a spring, on vertical piping. They can also offer a quick closing service type.
  • Tilting disc check valves are designed to prevent the disc slamming and to ensure, at the same time, a quick closing service.
  • Standards for check valves design manufacturing are ASME B16.34 and BS 1868.
  • Robust valve body in a wide range of materials (NACE compliance included).
  • Threaded seat rings facilitate maintenance and/or replacement. On request, they can also be supplied as tack or seal welded. Above NPS 24 seats are seal welded as standard.
  • Connections are offered as flanged, buttweld or special, such as clamp type, to meet any customers’ request.