Prevost Check Valve

Description

Prevost Check Valve

Reliable One-Way Flow Control for Pneumatic Systems

The Prevost Check Valve is a high-performance directional control component designed to allow compressed air to flow in one direction while automatically preventing backflow. Essential for maintaining system pressure and protecting sensitive equipment, these valves use a precision-engineered internal spring and seal mechanism to ensure a fast, bubble-tight shutoff the moment air attempts to reverse direction.

Whether used to protect a compressor from tank pressure or to maintain a vacuum in a reservoir, Prevost check valves are built to handle the rigorous demands of industrial air distribution.

Key Features

• Instantaneous Backflow Prevention: The internal spring-loaded poppet reacts immediately to changes in flow direction. This prevents downstream pressure from bleeding back toward the source, ensuring system stability and safety.
• Low Cracking Pressure: Engineered to open with minimal forward pressure, ensuring that the valve does not cause significant energy loss or air restriction during normal operation.
• High-Grade Materials: Typically constructed from nickel-plated brass or high-strength alloys, providing excellent resistance to corrosion and mechanical wear in oily or humid air environments.
• Airtight Sealing: Features high-quality NBR or Viton seals that ensure a 100% leak-proof closure even at low back-pressures, reducing the workload on your compressor and saving energy.
• Versatile Mounting: Available in multiple thread configurations (Male-to-Female, Female-to-Female, or Male-to-Male), allowing for direct installation into manifolds, tanks, or inline hose assemblies.

Technical Specifications

Common Applications

• Compressor Discharge: Installed between the compressor pump and the air tank to prevent pressurized air from pushing back against the pump head during the “off” cycle.
• Reservoir Protection: Maintaining pressure in a secondary air tank or accumulator if the main supply line loses pressure.
• Vacuum Systems: Ensuring that vacuum levels are maintained in suction cups or holding tanks even if the vacuum pump stops.
• Multi-Source Manifolds: Preventing air from one compressor from back-filling a second compressor in a parallel-linked system.

Installation Pro Tip

Always observe the flow arrow etched onto the body of the Prevost check valve. The arrow must point in the direction of the desired airflow. Installing the valve backward will completely block the air path and potentially cause system damage.