Carbon Steel Check Valve (A105/WCB) operates automatically on line pressure and fluid flow velocity to permit unidirectional media flow while instantaneously preventing backflow. Built with high-strength forged A105 carbon steel for small-bore piping or heavy-wall cast A216 WCB steel for larger diameter lines, these non-return valves utilize internal discs, pistons, or dual plates that lift or swing open under forward pressure and snap shut tight when reverse flow or pressure drop occurs.
By automatically arresting reverse flow, these robust check valves serve as critical safety components that protect upstream pumps, compressors, and pressure equipment from back-pressure surges and hydraulic water hammer. The heavy-duty forged and cast carbon steel bodies offer exceptional mechanical durability and thermal endurance, while API trim options with hardfaced seating surfaces ensure long-term seat tightness and erosion resistance across high-pressure utility and process lines.
Practical Advantages in the Field
-
Automatic Backflow & Water Hammer Protection: Instantly seals against reverse fluid surges to safeguard expensive upstream pumps, turbines, and compressors.
-
Rugged High-Pressure Carbon Steel Construction: Forged A105 and cast WCB bodies provide high tensile strength and structural integrity under severe thermal cycling up to 425°C.
-
Hardfaced Stellite Seating (Trim 5 / Trim 8): Stellite-overlaid seat rings and disc sealing faces resist wire-drawing, cavitation scoring, and high-velocity particle erosion.
-
Versatile Design Configurations: Available in Swing, Lift, and Dual Plate Wafer designs to suit horizontal or vertical pipeline orientations and space constraints.
-
Low Opening Pressure & Tight Sealing: Engineered for minimal cracking pressure to open smoothly while maintaining bubble-tight shutoff under minimum back-pressure.
Brands We Provide
-
FLOWORK
-
EMERSON
Typical Deployments
-
High-pressure boiler feed water lines, steam condensate return loops, and cooling systems
-
Crude oil transmission pipelines, refinery discharge lines, and petrochemical facilities
-
Pump discharge manifolds, compressor stations, and turbine exhaust piping
-
Power generation plants, industrial utility steam lines, and high-pressure gas distribution
-
Municipal water distribution, desalination plants, and industrial water treatment lines
Our Carbon Steel Check Valves at AustraliaValves.com are manufactured and tested in accordance with international safety standards, complete with optional external dashpots, counterweights, and spring-assisted closure options across Australia.
For pressure drop calculations, cracking pressure selection, or to request a quote, click here.
Reviews
There are no reviews yet.