Commonly used cut-off valves are the following:

1) DC-type valve: in the DC-type or Y-shaped valve, Bellows Seal Valvesthe valve of the flow channel and the main channel into a slash, this flow state extent of the damage is smaller than the conventional cut-off valve, and thus the pressure loss through the meter valve also the corresponding smaller.

2) Angle type globe valve: the angle globe valve, the fluid simply by changing a direction,Globe Valves so that this instrument through the valve pressure drop than the conventional structure of small cut-off valve.

3) plunger-type valve: This valve is a conventional form of variable valve type. Valve in the meter, valve and seat are usually designed based on the principle of the plunger. Polished into the plunger and valve stem connected to the plunger seal is set on two flexible ring to achieve. Two flexible rings separated by a ring, PLUG VALVESand through the valve cover nut the load applied to the valve cover gasket around the plunger fastened. Elastic ring can be replaced, you can use a variety of materials, the meter valve is mainly used for "open" or "off", but with a special form of plunger or special rings, can also be used adjust the flow.

Valve Selection Guide

Valve stem and valve seat sealing surface of the vertical axis. Open or close the valve stem travel relatively short, and very reliable cutting action, making this instrument very suitable as a medium of the valve or regulator and cutting off use. Once the cut-off valve in the valve open position, its valve seat and valve sealing surface contact between the longer and has a very reliable cutting action, and combine this instrument very suitable for the valve to cut off or adjusted as the medium and throttle use. Once the valve is turned on its valve seat and valve sealing surface between the contacts is no longer, so it's less mechanical wear sealing surface, as most of the cut-off valve of the valve seat and valve repair or replacement easier sealing components without the whole instrument is removed from the pipeline valves, instrumentation valves and piping for which welding into one of the occasions is very applicable. Medium through the valve when such instrument has changed the flow direction, so a higher cut-off valve on the flow resistance of the other instrument valves.

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