DN200-600 Vertical Gate Valve Disc Grinding Machine

Removes wear, erosion, scratches, and other sealing face defects to restore flatness and surface finish.

Adapts to hardfaced alloy, stainless steel, and other valve disc materials.

Uniform grinding motion ensures consistent material removal across the entire sealing surface.

Ideal for metallurgy, petrochemical, and power industry medium to large bore gate valve overhaul.

Improves valve sealing performance and extends service life.

Detailed Product Description Brief Points

1 DN200-600 Vertical Gate Valve Disc Grinding Machine is suitable for grinding and lapping sealing faces of gate valve discs, wedges, and seats from DN200 to DN600

2 German-designed Vertical bed with precision rotary structure ensures stable and accurate grinding performance

3 Removes sealing face defects including wear, erosion, scratches, and pitting to restore original flatness and surface finish

4 DN200-600 Vertical Gate Valve Disc Grinding Machine adapts to multiple disc materials including hardfaced alloy Stellite, stainless steel, and other hardened materials

5 Supports coarse grinding, fine grinding, and polishing in sequence with different grit abrasives to achieve required surface quality

6 Uniform planetary or rotary grinding motion ensures consistent material removal across the entire sealing face

7 Achieves surface roughness up to Ra 0.4 and sealing face contact ratio no less than 80 percent from initial rough condition

8 Grinding efficiency is 10 to 30 times that of manual grinding, significantly reducing labor costs and repair time

9 Ideal for metallurgy, petrochemical, power plant, and valve manufacturing industries for medium to large bore gate valve overhaul

10 Heavy duty construction with robust bed ensures long term stability and accuracy for workshop or factory use

Product Features and Applications

Features

German-designed Vertical bed with precision rotary structure for stable grinding

Removes wear, erosion, scratches, and sealing face defects

Adapts to hardfaced alloy, stainless steel, and other disc materials

Supports coarse grinding, fine grinding, and polishing in one setup

Uniform grinding motion ensures consistent material removal

Achieves Ra 0.4 surface roughness and 80%+ contact ratio

10 to 30 times more efficient than manual grinding

Heavy duty construction for long term workshop use

Applications

Gate valve manufacturing plants for disc sealing face finishing

Valve repair and overhaul workshops for MRO services

Metallurgy industry for large bore gate valve maintenance

Petrochemical plants for valve sealing face restoration

Power plants for gate valve overhaul and repair

Mining industry for heavy duty valve maintenance

Third party valve repair and testing service centers

Technical Data Table

FAQ

1. What valve sizes can this machine handle?

It handles gate valve discs, wedges, and seats from DN200 to DN600, covering most medium to large bore industrial gate valves.

2. What defects can this machine repair?

It removes wear, erosion, scratches, pitting, and other sealing face defects to restore the disc to original flatness and surface finish.

3. What materials can it grind?

It adapts to hardfaced alloy such as Stellite, stainless steel, and other hardened disc materials commonly used in gate valves.

4. What grinding stages does it support?

It supports coarse grinding, fine grinding, and polishing in sequence, allowing you to achieve the required surface quality in one setup.

5. What surface quality can it achieve?

It achieves surface roughness up to Ra 0.4 and sealing face contact ratio no less than 80 percent from initial rough condition.

6. What is the grinding principle?

The machine uses a precision rotary or planetary motion that ensures uniform material removal across the entire sealing surface for consistent results.

7. How does it compare to manual grinding?

It is 10 to 30 times more efficient than manual grinding, significantly reducing labor costs and repair turnaround time.

8. What industries use this machine?

It is widely used in metallurgy, petrochemical, power generation, mining, and valve manufacturing industries for gate valve overhaul.

9. Is this a portable or stationary machine?

This is a stationary heavy duty machine designed for workshop or factory use, with a robust Vertical bed for long term stability and accuracy.

10. What information do you need for a quotation?

Please provide valve disc diameter in DN, disc material type and hardness, current surface condition, and required final surface finish.