... uper pressure, then the fluid will be forced to go through the stationary valve and flow into the tubing ... side hole of the extractor, then go into the tubing,Testing:1, Conform to API Spec 11AX2, All the ... accessories of the sucker rod pump conform to the API standard and the drawing.3, Test ... fast, smooth or not5, all the materials conform to the drawing and request.Features:1, The sucker rod ...