Treating Iron

Dart Style Check Valve

The SPM® dart style check valve acts as an independent pressure actuated response system in well service applications including acidizing, cementing, fracturing, sand control, and well kill.

When fluid enters from the inlet side, it overcomes the dart’s low spring force. The dart then travels away from the inlet and allows fluid to flow out. When the flow stops, a light spring force closes the dart firmly against its seat, preventing fluid from backing through the flow line.

Dart valves are intended for use in services where the fluid media does not contain abrasive materials. For those applications, the SD clapper check valve will provide enhanced performance and extended life. These dart valves are manufactured in 2-inch and 3-inch sizes for operating pressures up to 15,000 psi.

Key Features & Benefits

  • Locking tab installed after assembly helps prevent backing off of threaded assembly
  • Dart seal provides additional protection from back flow upstream of valve
  • Light spring force closes the dart against seat


  • Fracking
  • Well Service


  • Well completion