stainless steel sanitary atmospheric pressure round manhole cover/manway door for dairy industry
Wenzhou Yuanyu Mechanical Co., Ltd. is a professional manufacturer of high-precision
hygiene grade valves, pipe fittings and liquid equipment
Manhole Cover Type
YUANYU have elliptical or round, without sight glass or with union type sight glass manhole cover. Pressure manhole cover can have above 4 handwheel quatity is depend on the size, the pressure, and the temperature. Also we can produce it accroding to your requirement.
When need repair the storage tank,first to unscrew the handwheel(use to fixed manhole cover and supply the force ro 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 accurately 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.