How to choose the flange of rubber joint .
How to choose the form a complete set of rubber joint flange, rubber joint mating flange is special flange butterfly valve, butterfly valve flange, special flange is small so the mating flange sealing surface can and rubber joint sealing surface, has the best sealing effect, safe and reliable, if the choice is ordinary big flange on the market, will be pressure to the half of the sealing surface, not fully pressure, when pressure testing will pull the rubber ball, rubber edge from the flange of rato, lead to blasting, so, when selecting a rubber joint mating flange must choose special flange butterfly valve, safe and reliable.
Choose the equivalent flange is to give perfect, durable and safe connection methods;
Choose pipe flat welding flange, please use the following criteria
A) diameter of the pipe crossing the connection must be as the inner diameter of the rubber shock joint.
B) connected to the flange of pipe crossing the flange contact surface must be smooth and flat, in order to ensure to have the largest sealed space.(as shown in the figure below), shockproof rubber joints didn't have a tight joint and the pipe crossing interface, there will be noise, stress and insufficient and there will be a leak phenomenon, etc