What is the stop valve?

Stop valve is mandatory sealed valve, so that when the valve is closed, the pressure must be applied to the valve to force the sealing surface does not leak. Stop valve opening and closing parts are plug-shaped valve, seal appear before plane or cone, valve seat along the center line of a straight line. Stem form of exercise, (generic name: dark bar), but also lift rotating rod, (generic name: the next shot) cut-off valve is closed parts (disc) moves along the centerline of the valve seat. According to this mobile form of valve, the valve seat port change is proportional to the valve travel relationship. As such the valve stem to open or close the relatively short trip, but also have very reliable cutting function, but also because the trip is proportional seat port change valve valve is very suitable for flow regulation. Therefore, this type of valve is suitable for cut or regulation and throttle use.

Brass stop valve/globe valve-307

Stop valve works

Stop valve, also known as stop-gates, is the most widely used of a valve, it is the reason why the popularity is due to the process of opening and closing between the sealing surface friction is small, durable and opening height is not easy to manufacture, maintenance convenient, not only for low-voltage, but also suitable for high pressure.

As the principle of the valve is closed, the pressure valves on the bar, so that the sealing surface of the valve seat sealing surface snug fit to prevent the media circulation.

Stop valve can only medium one-way flow, directional installation. Length of the structure is greater than the cut-off valve gate, while the fluid resistance, long-term operation, the sealing reliability is not strong.

As forms of valve structure

Stop valve body structure in the form of straight-through DC and right angle. Straight-through is the most common structure, but its fluid resistance maximum. DC-type fluid resistance is small, used for containing solid particles or viscosity of the fluid. Multi-angled body forging for smaller circulation, the higher pressure shut-off valve.

The advantage of using a stop valve

1, the dual seal design (bellows + fill) if the bellows failure, stem packing will be avoided;

2, external leakage, and sealed in accordance with international standards;

3, there is no fluid loss, reduce energy loss and improve plant safety equipment;

4, long service life, reduce maintenance times and lower operating costs;

5, Rugged bellows seal design to ensure zero stem leakage, provide maintenance conditions.

As the type of valve stem threads divided by location external thread, and internal thread type. According to the flow of media points, straight-through, DC type and angle type. Stop valve according to the sealing form of points, packing seal shut-off valve and bellows sealed globe 

valve.

Bright Best air conditioning is a chinese private group of companies established in 2012 and specialised in heating and air conditioning parts.

Our workers have years of production experience in fan coil unit,industrial valve,air curtain,air conditioning thermostat,corrugated stainless steel tubing.Mr Ding, our technical manager has eight years of experience in the field of air conditioning and refrigeration.

Brightbest is provided with quality certification according to ISO9001:2000 , SO14001:2004 ,CE and is strongly committed to customer satisfaction.

We guarantee each product through rigorous testing.Our goal is to provide quality products on a timely basis. We pride ourselves on our ability to offer technical knowledge and advice to our customers as well as product of the highest quality.

Our products have been exported to UK, France, Italy, Middle East, Australia,and Africa etc.OEM and minimum orders will be welcome.