Tom Wheatley check valves have been an integral part of the sub-sea and surface flow control arenas for over 70 years. with valves in service around the world, in the most critical back-flow prevention applications, Tom Wheatley is recognized as the industry leader for check valve products. Tom Wheatley offers fire resistant valves used in surface pipeline and processing applications, Tom Wheatley offers a complete line of swing, piston and nozzle check products to meet our customers’ most demanding applications. Tom Wheatley Swing Check are used in critical service applications worldwide. The swing check design prevents back-flow in a fraction of a second and there is no need for expensive actuation.