Manholes are safety emergency ventilation devices installed on the top of storage tanks. They are typically used in conjunction with fire arresters and mechanical breather valves. They prevent damage to the tank and accidents caused by sudden overpressure or vacuum due to unforeseen circumstances, and also serve as a safety flame arrestor. They are crucial safety devices for protecting storage tanks, particularly suitable for domed atmospheric pressure tanks with nitrogen-sealed roofs. They offer advantages such as constant pressure discharge, constant pressure intake, flexible opening and closing, safety flame arrestor, compact structure, good sealing performance, and high reliability.
Manholes are categorized into emergency pressure relief manholes, explosion-proof flame arrestor breather manholes, tank top manholes, tank wall manholes, and manholes with cores.
YAB stainless steel manhole covers, made of SUS304 and 316L, meet the special requirements of various media in the food and biopharmaceutical industries. Their smooth, seamless design and automatic venting of fluid channels are also ideal for steam cleaning. Manufacturing and processing strictly adhere to FDA quality control requirements, utilizing computer-aided 3D design, and are manufactured to GMP standards. The products are used in large tanks and containers in industries such as dairy, beer, food, beverage, pharmaceuticals, and bioengineering. Oval (pressure): Maximum pressure withstand 5 bar
Specifications: 435×335, 535×435, 635×525 mm
Round (pressure): Maximum pressure withstand 5 bar
Specifications: 400×120, 430×120, 450×120, 500×120, 600×120 mm
Round (non-pressure): Dustproof manhole opening for large tanks; this type of manhole is installed above the liquid.
Specifications: 400×100, 430×100, 450×100, 500×100, 600×100 mm
Rectangular (pressure): Maximum pressure withstand 5 bar. Specifications: 330×430, 435×512, 412×535; Related products offered: YAC type manhole, YAB type manhole, YAC-J type manhole, YAE type manhole, YAA type manhole, YAB-H type manhole, YAD type manhole, oval manhole cover, round manhole, rectangular manhole, round quick-opening pressurized manhole, atmospheric pressure manhole, non-pressure manhole cover;
