Isolation gate valves belong to a prominent family of isolation valves. Like other isolation valves, the isolation gate valve’s function is on/off, fully open or closed. The typical isolation valves used in the industry are wedge gate valves, parallel slide valves, check valves, and globe valves.

Isolation means there is no fluid control purpose. The flow can go sometimes in both directions, from inlet to outlet and viceversa. They stop the flow and isolate the upstream pipe from the downstream pipe. Even with the same media, there can be different conditions in the upstream and downstream pipelines. This is done with gate or wedge valves depending on the direction of the pipe of the turning element used, splitting the isolation valves into two families.

How do isolation gate valves work?

Isolation valves have no control and no interference with any other valve part. They are split into multi-turn and quarter-turn valves. A multi-turn valve is a gate or globe valve with a vertical stem that only goes up and down. The opening allows the flow to pass through and closes to stop the flow. It’s a multi-turn because you multi-turn on the handwheel to open and close the gate. A quarter turn means you have a stem and the disc which stays in the flow, and it can be fully closed, or you turn quarter, so 90 degrees angle and the flow can pass through.

What makes Trillium isolation gate valves different?

Our Hopkinsons® brand was the first to introduce the venturi feature on the gate valve, which is well known in all industries. Instead of adding a full bore gate, this has a higher velocity across the valve. Our isolation gate valves can handle higher velocity and lower pressure, which means less stress for the valve.

Our highly engineered isolation gate valves come in various styles, materials, and features to prevent leakage with multiple mediums and applications. Our valves are strong and designed to flow effectively, and are ideally suited for high-pressure applications.