Cast Steel Gate Globe Check Valve

A gate valve operates by vertically lifting a wedge-shaped gate from the fluid path, enabling unrestricted straight-line flow with zero pressure drop when fully open. Its hallmark feature is the precision-machined planar sealing surfaces between the gate and seats, ensuring bubble-tight closure in high-pressure systems.

Key Features & Advantages:
☑ Full-Port Design:
Eliminates flow turbulence and energy loss, ideal for oil, gas, and water transmission pipelines.
Wedge gates (flexible, solid, or split) compensate for thermal expansion and seat wear.
☑ Robust Sealing Performance:
Parallel or tapered sealing faces (metal-to-metal or resilient seated) for leak-proof operation up to ASME Class 2500.
Bi-directional sealing capability for versatile installation.
☑ Industrial Durability:
Bodies in cast steel (WCB/WCC), stainless steel (CF8M/CF8), or alloy steel (WC6/WC9).
Compliant with API 600/603 standards for refinery, petrochemical, and power generation applications.

Common Applications:
Oil & Gas: Crude oil trunk lines, wellhead isolation.
Water Treatment: Mainline shutoff in distribution networks.
Steam Systems: Boiler isolation, turbine bypass control.

A globe valve regulates fluid flow through a linear motion plug (disc) and stationary seat, which divide the valve into two distinct chambers. By rotating the handwheel to actuate the stem, the plug seats against or retracts from the seat, enabling precise throttling and repeatable flow control in applications requiring frequent adjustments.

Key Features & Advantages of Globe Valves:
☑ Superior Throttling Capability:
Multi-turn stem design provides fine flow modulation, ideal for steam, condensate, or chemical dosing systems.
Low cavitation risk compared to gate or ball valves.
☑ Bubble-Tight Shutoff:
Conical or parabolic plug profiles ensure leak-proof closure under high differential pressures.
Metal-to-metal or soft (PTFE/Graphite) seating options for varied media compatibility.
☑ Durable Construction:
Bodies in cast steel (WCB), stainless steel (CF8M), or bronze, compliant with API 602 (compact design) and ANSI B16.34 standards. Bolted bonnet or pressure-seal designs for high-temperature/pressure services.

Common Applications:
Power Generation: Boiler feedwater control, turbine bypass.
Oil & Gas: Refinery process lines, pressure relief bypass.
HVAC: Chilled water balancing, heat exchanger control.

A check valve (non-return valve) automatically ensures fluid flow in one direction only, preventing backflow and protecting pumps, compressors, and piping systems. Activated solely by fluid pressure, it requires no external control, making it ideal for fail-safe applications.

Key Types of Check Valves:
☑ Swing Check Valve: A hinged disc swings open with forward flow and closes under reverse pressure.
☑ Lift Check Valve: Also known as Piston Check Valve - A piston-like disc lifts vertically to allow flow, then seats tightly under backflow.
☑ Ball Check Valve: A spring-loaded ball retracts during forward flow and seals against the seat when flow reverses.

Advantages Across Industries:
☑ Zero Backflow Risk: Critical for oil & gas pipelines, chemical processing, and boiler feed systems.
☑ Low Maintenance: No manual intervention required for standard operation.
☑ Material Versatility: Bodies in cast iron, stainless steel (SS316), or alloys (Inconel®) for corrosive or high-temperature media.

Typical Applications of Check Valves:
Pump discharge protection, Steam condensate recovery, HVAC chilled water systems, Refinery hydrocarbon transfer