Pressure manhole

 Pressure type manhole cover series are major use to the pressure tank of food ,wine-producing ,beverage and pharmacy industries and so on.

Operating principles:

When need repair the storage tank,first to unscrew the handwheel(use to fixed manhole cover and supply the force to axial seal),then open the manhole cover by the handle which fixed in the manhole cover (manhole cover is jointed together by hinge and frame,to ensure accuately closure when the manhole cover close,and the hinge can let the opened manhole cover stop above 30 degree angle of upright position),thus the serviceman can check the storage tank,when the manhole cover closed ,both of the seal of manhole cover and the tank can ensure complete sealing ,so we can avoid leakage of the tank.

 Design standard:

We have elliptical or round,without sight glass or with union type sight glass manhole cover .

Pressure manhole cover can have above 4 handwheel to fix the device ,the handwhell quantity is depend on the size, the pressure,and the temperature.also we can produce based on your requirement.

 Technical data:

 Working pressure:max.pressure is 5 bar

Working negative pressure:full vacuum

Range of temperature:-10 ℃ to 250 ℃