Product Overview

The MJ-250 is a portable valve grinding machine designed for the maintenance of flat valve seats and safety valve seats.

A clamping frame supports installation on the valve body during grinding, making the machine suitable for both on-site and workshop valve maintenance.

Applications

• Flat valve seats

• Safety valve seats

• On-site valve maintenance

• Workshop sealing-surface restoration

Product Features

• Suitable for flat valve seats and safety valve seats

• Portable clamping-frame installation

• Variable-speed electric drive

• Optional grinding discs for different valve configurations

• Suitable for on-site and workshop maintenance

• Modular structure for transport and installation

Technical Specifications

Model: MJ-250

Applications: Flat valve seats and safety valve seats

Grinding range: Φ90–275 mm

Valve size: DN80–250 (3″–10″)

Maximum grinding depth: 450 mm

Clamping range: 60–480 mm

Power supply: AC 220 V / 50 Hz

Motor power: 1,300 W

Speed control: Variable speed

Equipment weight: 38 kg

Model Selection Information

The nominal valve size is provided for reference. The correct machine and grinding-disc configuration should be selected according to the actual sealing-surface diameter, valve structure, grinding depth, and available clamping space.

Please provide the following information when requesting a recommendation:

• Valve type and nominal size

• Actual flat sealing-surface diameter

• Valve-seat structure

• Required grinding depth

• Available clamping range

• Available installation and operating space

• Valve drawings or clear photos

• Power-supply requirements

Typical Industries

The MJ-250 is used for valve maintenance in power generation, petroleum and petrochemical processing, chemical plants, natural-gas systems, shipbuilding, metallurgy, boiler maintenance, water treatment, and general industrial maintenance.

Technical Support

Technical manuals, product-selection support, and operation guidance are available.

For model confirmation and quotation, please send your valve information and working requirements to sales@metalskingdom.com.