neck 32 and head 34 provide for a less turbulent laminar flow through the valve chamber around the poppet which reduces the pressure drop across the valve under normal operation head 34 is shown with four bevels 68 a 68 d and radiusing therebetween to maintain smooth flow through the valve this long poppet 24 embodiment would typically be preferred within larger pipe diameters such as one inch gas pipes and pipes otherwise having a high nominal flow velocity fig2 and fig2 depict a shut off valve 70 wherein elongated poppet 24 is retained in a valve body 12 whose connectors are configured with the same connection styles in this case threaded male pipe ends accordingly it will be seen that this invention provides a combination fluid flow surge suppressor and automatic shut off valve that in a preferred embodiment also provides for automatic resetting back to nominal flow state it will be appreciated that although various implementations of poppets and valve bodies have been shown that a person of ordinary skill in the art may implement a number of variations thereof without departing from the present invention furthermore the flow bypass described may be implemented within the shut off valve by various means a few of which were.