4''emergency bottom valve

Emergencyshut-off valve installed on the bottom of the tanker with flange connection, and the seals extend into the tanker. Utilizing stainless steel spring pressure with axial self-sealing to maintain emergency valve in closed state and operate opening and closing by transmission device. External shear groove can effectively absorb the energy from the pipe when the tanker is crashed down. The valve body cuts off from the shear groove and make the tanker and pipe separate to