The Quick Opening Manhole Cover is a manhole assembly on pressure vessels or storage tanks, specifically referring to a sealed cover that realizes quick opening and closing with a special mechanical structure. It replaces the traditional bolt fastening method, and the locking can be released by rotating the handle or loosening a small number of clamps, which greatly improves the operational efficiency.

Product Parameters

Parameter Category	Specific Description
Core Components	Mainly composed of a short shell section (or short pipe), a flange, and a manhole cover with a handle
Opening Requirements	For pressure vessels, the number of manholes to be opened and their minimum dimensions shall be implemented with reference to the relevant standards for "inspection holes"
Material Selection	Carbon steel	Q235B (16mn) 20# A105
	Stainless steel	304, 316, 316L, etc
	Alloy steel	12Cr1MoV, ALLOY59
	Other special materials	C4 steel, HB3, HC276, MONEL 400, N08800, chromium-molybdenum steel, nickel-based alloy, etc
Classification by Pressure Condition	Atmospheric pressure manhole, pressure-bearing manhole

Product Advantages

Extremely fast opening speed
Safe and convenient operation
Reliable sealing performance
Low maintenance cost

Main Applications

Chemical and Pharmaceutical Industries:Quick Opening Manhole Cover is used for reaction kettles, mixing tanks, and pressure vessels that require frequent cleaning, feeding, or inspection.
Food and Beverage Industry:It is widely applied in equipment with high requirements for hygiene and operational efficiency, such as fermentation tanks and liquid storage tanks.
Energy and Environmental Protection Industry:It is installed on devices requiring regular maintenance, including filters, separators, and biogas storage tanks.