Expanding Gate Valve is manufactured in accordance with API-6D. This type of valve is suitable for onshore and offshore applications where suspended and abrasive solids are present in the fluid or for oil and gas transportation and isolation service. Expanding Gate Valve are full opening valves with rising stem and Parallel Expanding Gate and segment for tight mechanical seal and positive shut-off, both upstream and downstream and under both low and high differential pressure. The Double Block and Bleed design offers a proper seal in between both seats and the gate in high and low pressure, for this reason, line pressure is not needed to seal the valve