Safety valve body and safety valve

The invention provides a safety valve body and a safety valve, and relates to the technical field of water supply pipeline safety. The safety valve body comprises a valve shell, a piston cylinder, a piston body, a second magnetic part and a third magnetic part. At least part of the piston cylinder is located in the valve shell, the piston cylinder is connected with the valve shell, and a water flow opening is formed in the piston cylinder; a first cavity is formed between at least part of the outer wall of the piston cylinder and at least part of the inner wall of the valve shell. And a cavity channel is arranged on the piston cylinder. The piston body comprises a piston and a first magnetic part which are relatively fixed, the piston is arranged in the piston cylinder in a sliding mode, and one side of the piston corresponds to the water flow opening. The second magnetic part is slidably arranged in the piston cylinder, and the third magnetic part is fixedly arranged in the piston cylinder. According to the