Transportable valve grinding machine conical seats

The portable VSK valve grinding machine from EFCO is the ideal solution for precise machining of conical sealing surfaces in high-pressure, shut-off, and control valves. With its compact design and low weight, it is perfectly suited for mobile use on site. Covering a working range from DN 8 to DN 300 (¼"–12"), the VSK is capable of handling a wide variety of valve sizes.

The machine is easy to operate and allows for central alignment using centering cones or a crown clamping chuck. Adjustable tool pressure ensures optimal grinding results, while low-wear components and a high-torque drive motor provide long service life and efficiency. The VSK is available with different drives: electric (230/120 V, 50/60 Hz), pneumatic (6–7 bar), or battery-powered (18 V DC).

Standard seat angles that can be machined include 30° (2x15°), 40° (2x20°), 60° (2x30°), 75° (2x37.5°), and 90° (2x45°); other angles are available on request. The VSK series includes various models tailored to specific nominal diameters, ensuring the best fit for a wide range of applications.

Whether in power plants, refineries, the chemical industry, or on ships—wherever quick valve repairs and cost-effectiveness are needed—the VSK proves its worth. With an attractive price-performance ratio and the option for rental, it offers a flexible and economical solution for valve maintenance.