Portable Valve Spindle Grinding Machine / PVG

The PVG is designed to be mounted either horizontal or vertical in for instance a vice.

For grinding of valve spindles on high and medium speed engines

The portable valve spindle grinder (PVG) has been developed for on-site machining of all types of cylinder air-intake/exhaust valve spindles on small and medium bore diesel engines onboard the vessel. The pneumatically driven Portable Valve spindle Grinder is designed to be mounted either horizontally or vertically for optimal performance, and is delivered with fixed angles according to the customer’s choice. Being delivered in 2 cases with the heaviest case of 28kgs, the machine is easily transported to the workplace and can even be checked in on airplanes.

The grinding machine is air driven and easy to operate. It is of robust construction and designed as a professional tool for grinding valves both onboard and ashore. An air filter and an oil mist lubricator is fitted for reliable operation. A high precision grinding motor, automatic centering, automatic feed mechanism and air cooled grinding assures a high quality grinding result. Due to its sturdy design and incorporated features, a high quality grinding result is achieved quickly, also under the most demanding operating conditions.



  • Operating range 6-40 mm stem diameter
  • For all 4-stroke medium speed engines
  • Portable and easy to handle
  • Preset angles
  • Pneumatically driven

Technical specification

Machine capacityStem diameter up to mm, Valve disc diameter up to 250 mm
Air pressure0,6 - 0,8 MPa (6-8 BAR OR 85-130 psi)
Air consumption700 l/min
WeightBasic machine with case: 28 kgs, Accessories with case: 15-25 kgs
Max dimensionsCases (LxWxH): 415x400x250 mm
Air hose connection12,5 mm (1/2")
Noise level76 dB(A) / 75 dB(C)
Grinding speed2 mm/min (along the valve face)