The Cameron TOM WHEATLEY swing check valve is used in critical service applications worldwide. The swing check design prevents backflow in a fraction of a second and there is no need for expensive actuation. The TOM WHEATLEY swing check valve’s subsea model features a unique, free-swinging clapper. If a reverse flow or critical pigging operation is required, the clapper can be manually, ROV, or hydraulically actuated and held in a full open position.