What is a globe valve

What is a globe valve?

A Globe valve, also known as a cut-off valve, is a mandatory sealing valve, so when the valve is closed, pressure must be applied to the valve disc to force the sealing surface not to leak. When the medium enters the valve from under the valve disc, the resistance that the operating force needs to overcome is the friction force between the valve stem and the packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the valve stem The diameter of the valve should be large, otherwise, the failure of the top of the valve stem will occur.

The connection method is divided into three types: flange connection, thread connection, and welding connection. After the appearance of the self-sealing valve, the medium flow direction of the globe valve is changed from the top of the valve disc into the valve cavity. At this time, under the action of medium pressure, the force to close the valve is small, while the force to open the valve is large, and the diameter of the valve stem can be adjusted accordingly. decrease. At the same time, under the action of the medium, this form of valve is also tighter. my country's valve "Three Chemicals" once stipulated that the flow direction of the globe valve should be from top to bottom. When the globe valve is opened, the opening height of the valve disc is 25% to 30% of the nominal diameter. The flow rate has reached the maximum, indicating that the valve has reached the fully open position. Therefore, the fully open position of the globe valve should be determined by the stroke of the valve disc.

FRPP FLANGED PLASTIC GLOBE VALVE

Media: Water, Chemical, Indrustry

Temperature: Ordinary Temperature

Driving Mode: Manual

Material: FRPP

Connection Form: Flange

Structure: Through Way Globe Valve

Sealing Form: Bellows Globe Valve

Model NO.: Plastic Globe Valve

Seal Form: Auto Sealed

Stem Thread Position: Inside Screw Stem Globe Valve

Standard: DIN, JIS, ANSI

Trademark: BAODI

Origin: Zhejiang, China

Transport Package: Carton/Plywood Box

Valve Body: Injection

Work Pressure: Low Pressure (Pn<1.6mpa)

Working Temperature: Normal Temperature (-40°C<t<120°c)< p=""> </t<120°c)<>

Application: Industrial Usage, Water Industrial Usage, Household Usage