EFCO ROTAGO – The Ball Valve Lapping Machine

Stationary ball valve lapping machine for the simultaneous finishing of the ball and 2 metallic sealing rings. For small and medium-sized ball workpieces with diameters of up to 300 mm.

The EFCO ROTAGO is the best solution for lapping together metallic ball valve sealing seats and ball. It is suitable for a great variety of sealing seats and balls, i. e. floating ball, carried ball, etc., where surface shape and quality is of particular importance.

Main features of this machine are:

  • Simultaneous lapping of all sealing parts
  • Huge time savings compared to the manual lapping process
  • Ensure an exact fit of ball and sealing seats
  • Control speed of each drive continuously and independently
  • Integrated metering device for steady distribution of lapping mixture
  • Loading of large lapping workpieces from above
  • Adjustable stroke of sealing seat movement
  • Continuously adjustable pressure control to regulate contact between valve seats and ball
  • Drip container for used lapping mixture
  • Door equipped with protection switch
  • Timer with automatic shutoff
  • Ergonomically adjustable control panel
Ball diameters:

Ψ 50 mm – Ψ 300 mm (2" – 11.8")

Maximum ball weight: ca. 100 kg
Speed of main spindle (ball): 3 – 60 U/min
Speed of secondary spindle (valve seats): 3 – 80 U/min
Speed of pendulum mechanism: 3 – 30 U/min
(Eccentric) travel of the pendulum: 0 mm – 60 mm (0 – 2.4")
Grinding and Lapping