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@keyframes dash {
  from {
    stroke-dashoffset: 290;
  }
  to {
    stroke-dashoffset: 0;
  }
}

svg.heartbeat{
  width:200px;
  height:120px;
}
.heartbeat .path {
  stroke-dasharray: 290;
  stroke-dashoffset: 130;
  animation: dash 1.5s 0s forwards infinite;
  stroke-width:7px;
  stroke-linecap:round;
  stroke-linejoin:round;
}

<div align="center"><svg class="heartbeat" width="200" height="160" xmlns="http://www.w3.org/2000/svg">
  <path class="path" d="M10 70 L 70 70, 90 30, 110 90, 120 50, 130 70, 190 70" stroke="#F26B3B" fill="transparent"></path>
</svg></div>