Flowline valve
Dart Check Valve
Axial nonreturn valve for automatic reverse-flow protection in pressure-control flowlines.
One-way
Flow function
Axial dart
Closing mechanism
Automatic
Reverse-flow response
To spec
Connections and service
Overview
A dart check valve uses an axially guided dart and seat to permit forward flow and limit reverse flow. Forward differential pressure moves the dart away from the seat; when flow stops or reverses, the dart returns toward the seat to close the flow path.
- Automatic one-way flow control
- Axially guided dart closing element
- Closes when forward differential pressure is lost or reversed
- Install in the specified flow direction
- Pressure class, spring, materials, and connections confirmed per configuration
Specifications
- Product type
- Axial dart nonreturn check valve
- Primary function
- Prevent reverse flow
- Closing mechanism
- Axially guided dart and seat
- Operation
- Forward pressure opens; stopped or reverse flow closes
- Orientation
- Install for the specified flow direction
- Pressure and service
- Application specific; confirm required rating and service class
Exact dimensions, materials, pressure ratings, and service limits must be confirmed for the selected configuration.
