Component parts of solid-liquid separators, namely, plate handles, movable head roller assemblies, bellows for hydraulic cylinders and plate carriers; Parts for cloth suspension devices to be built in solid-liquid separators, namely, cloth suspension springs, bottom bolts, top bolts and filter cloth suspension arms; Parts of driven sections of solid-liquid separators, namely, fixed torque detecting reducers and cycle start motors; Oil pressure switches as parts of hydraulic piping assemblies to be built in solid-liquid separators; Bellows for hydraulic cylinders to be built in solid-liquid separators; Handles, spacers, springs, bolts, mechanical arms, reducers, motors, switches, bellows, all of which are parts of solid-liquid separators; Component parts for solid-liquid separators, namely, fixed end plates and fixed end plate assemblies, movable end plates and movable end plate assemblies, fixed heads, movable heads, cylinder head frames, filter cloth, side bars and side bar reinforcement ribs; Filter plates and parts thereof, to be built in solid-liquid separators, namely, plate handle protection caps, grooved shoes, flat shoes, plate handle shoes and filter plate assemblies; Compression plates and parts thereof, to be built in solid-liquid separators, namely, pins, stays, cuff packing, filtrate packing, rubber rings, fixing rings, diaphragms, parts for diaphragms, compression plate assemblies and wear plates; Parts for cloth suspension devices to be built in solid-liquid separators, namely, cloth fix rings, filter cloth suspension bars, bottom bars and cloth suspension device assemblies; Parts for plate carriers to be built in solid-liquid separators, namely, plate carrier covers, frames, springs, rollers, levers, carry claws, backup claws, support claws, block claws and depressing claws; Drain port retainers for solid-liquid separators, namely, grommets and grommet spanners; Rings, cylinders and cylinder heads, pins, rollers, brake shoes, cloth suspension devices, packing, plates, covers, claws, frames, bars, rods, levers, caps, wheels and filters, all of which are parts of solid-liquid separators; Valves and valve units, joints, elbows, pulleys, links, rings, tubes, cylinders and cylinder heads, bearings, shafts, non-electric couplers, machine stands, machine guides, pipes and pipe units, hoses, pins, supporting devices, mechanical seals, pumps, regulators, driving units, reducers, sprockets, controllers, cocks, gears, brake shoes and cloth suspension devices, all of which are parts of solid-liquid separators