Purpose
- machine is designed for lapping (polishing) of the flat sealing surfaces of the gate valve wedges, valve spools, and сhristmas-tree wedges;
- special-configuration SP-600 is used for lapping the end-seal rings.
Types of machined parts
- wedges of the gate and christmas-tree valves;
- valve (global valve) spools;
- end-seal rings of the pumps;
- other flat-surface parts.
Lapping-plate diameter
- SP-1200: Ø 1250 mm (40″). Approximately, DN 50…600 mm (2...24″) for the wedges of the gate valves, and DN 40…200 mm (2...8″) for the spools of the valves.
- SP-600: Ø 620 mm (24″). For the wedges of the gate valves DN 50…150 mm (2...6″).
- Each point of the lapped surface of the parts makes complex plane-parallel motion on the lapping-plate surface.
- The machines are equipped with the polishing-compound supply device.
- The spent compound is collected in a special tank.
- The lapping time is automatically controlled by the timer.
- The machines are equipped with the smooth start device with the lapping-plate speed adjustment.
- The machines are designed so that the lapping disc can be adjusted during its operation.
