Pressure relief valves (PRVs) are vital safety components in many industrial processes. They are designed to protect equipment and personnel from overpressure situations by relieving excess pressure. However, like any mechanical device, PRVs can wear out or become damaged over time, causing them to malfunction or leak. When repairing PRVs, it is important to use the correct lapping tools and abrasives to ensure that the valves are properly sealed and functioning.

One of the most common reasons for leaking valves after repair is incorrect lapping or the use of the wrong abrasives and lapping tools. Lapping is a process that involves using a rotating abrasive to polish the sealing surfaces of the valve and its seat, creating a tight and effective seal. However, if the wrong abrasive is used, or if the lapping process is not done correctly, it can cause damage to the valve and seat, resulting in leaks and reduced efficiency. For this reason, it is crucial to use the right lapping tools and abrasives when repairing PRVs.

Kemet have developed a lapping kit specifically designed for Tyco, Crosby, and Anderson Greenwood PRVs, which is used to ensure that the valves are repaired correctly the first time. The kit includes all the necessary components for effective and efficient lapping, including lapping compound, lapping tools, and instructions.

The lapping compound included in the kit is a premium quality diamond abrasive, which is specifically formulated for use on PRV seats and discs. The compound is available in various grades, allowing for precise control over the level of abrasion and the degree of polishing. The lapping tools included in the kit are designed to fit the specific size and shape of the PRV seats and discs, ensuring that the lapping is done with the correct pressure and contact area.

Contents of the PRV Lapping Kit

• 15 Lapping / Polishing blocks, double sided with Kemet composite (D through T2 orifice sizes)
• 1 x Applikator of 3 Micron Kemet Diamond Compound.
• 1 x Applikator of 14 Micron Kemet Diamond Compound.
• Bramet Silicon Carbide self adhesive papers. Grades 60, 120, 180, 320 Grit.
• Housed in strong ABS plastic case (Weight approx 11.5 Kg)

Product Code: 352900