Design 

Shield^TM  Gate valves serve as efficient on-off valves with flow in either direction. In such a design, a wedge slides cross a general passageway in order to control fluid flow (like a sliding gate - hence, the name). One of the most significant characteristics of this type of valves is its straight-through, unobstructed passageway when set in the “full open” position. This is made possible by the wedge lifting entirely out of the passageway. As a result, gate valves are characterized by a minimum of turbulence and pressure drop in operation.

While gate valves are good for applications requiring these two factors, they are not recommended for installations in which throttling would be a function. They are designed for on/off service.

Bolted Bonnet					Pressure Seal Bonnet

Features and Benefits

Shield^TM Gate valves are primarily designed to start or stop flow, and when a straight-line flow of fluid and minimum flow restriction are needed. In service, these valves generally are either fully open or fully closed. The disk of a Gate valve is completely removed when the valve is fully open; the disk is fully drawn up into the valve Bonnet. This leaves an opening for flow through the valve at the same inside diameter as the pipesystem in which the valve is installed. A Gate valve can be used for a wide range of liquids and provides a tight seal when closed. There are three different disks or wedges available for Gate valves, solid wedge, flexible and split wedge. Ranging of the Gate valves is usually made by the type of wedge used.

• Casting Steel material;

• Outside screw and Yoke; 

• Rising Stem; 

• Regular Port and full port ; 

• Bolted,  and pressure seal bonnet  joint; 

• Solid wedge, flexible wedge, split wedge; 

• Integral backseat; 

• Metal seated; 

• Extended stem gate valve servers for cryogenic condition;

• Butt weld and flanged end available;   

• Integral body extended available.