... hydraulic pressure deviceOne is called "hydraulic pressure locknut locking type". After hydraulic pressure, lock the piston rod with ... moving.The other is automatic pressurize type. Automatic pressurize type or automatic pulling plate type filter press, after press the ... material: polypropylene, casting iron, rubber, stainless steel etc.4, 450, 630, 800, 1000, 1250, 1500 type filter press’s operation ...