The vane pump ensures smooth feeding of the raw material without crushing the meat. The hard chrome plating finish on the inside of the pump housing and teflon vane ensure longer life of the housing. The inside area where the raw material passes can be easily disassembled for washing, maintaining a high standard of hygiene. The pulsation generated when the pump is in motion or when stopped is smoothly absorbed and feeding to the stuffing machine is kept at a constant pressure. For this reason, minute adjustment of the weight in the stuffing machine can be easily made and the fixed quantity maintained with a high degree of precision, thereby increasing yield which is vital to production control. The cylinder shaft of the constant pressure device is of W-pipe configuration, so even if the O-rings surrounding the No.1 piston become worn and meat escapes, the meat is stopped by the No.2 piston and ejected by means of the hollow shaft. Thus, meat is prevented from getting into the air equipment, thereby improving durability as protecting the air equipment which is considered vital to the constant pressure function. On-off action of the constant pressure device is controlled by the air signal, ensuring excellent durability. As the speed can be set easily by means of the inverter control and starting power is required, the pump rotates smoothly. ■ATTRACTIVE STAINLESS STEEL IS USED. The raw material transit parts consisting of the inside of the pipes, connecting parts and the inside of the constant pressure device, are hygienically finished and highly durable. ▲TO THE PAGE TOP