Fluid end valve and seats are consumables. JST will help you reduce these costs by recommending when to replace the valve and seat. Due to different conditions in different regions, we cannot know how many hours, stages, strokes or pounds of proppant the valve will last. However, the hydraulic end maintenance plan can be extended to minimize the number of times to pull the cover and throw away good parts.

Product installation

The operating principle is simple - the insert first contacts the fluid end valve seat and forms a seal, and then the differential pressure forces the valve downward until the metal impact surface of the valve contacts the valve seat. The key is that the insert must be sealed; There may be no leak path.

When using the valve, the impact surface and insert will be worn. However, unless rocks or other objects are stuck in the valve, wear is gradual and predictable. Based on your operation and the following guidelines, you can make a better decision on the valve condition and possibly extend the time before pulling the cover, check valve and valve seat.

Early wear

The matching surface of valve insert and valve seat is smooth and clean without depression. The valve has short service life and long remaining life.

The insertion wear did not cross the surface, so the valve still functioned well.

Moderate wear

The matching surface of valve insert and valve seat has good finish, with slight sand inlay and slight depression.

The valve has short service life and long remaining life. The insertion wear did not cross the surface, so the valve still functioned well.

High wear

It's time to replace.

Almost all inserts are damaged, and the valve will soon leak, flush and fail.

Valve seat replacement

Replace the valve seat when the impact surface is worn to 0.06 inch (1.5 mm deep).

Wear gauges are available. Valve seat wear will shorten valve life.