Baker Hughes Safety Relief Valve 19000 Series

The bonnet top should be replaced if: 1. The threads are stripped, torn or galled.;

The O-ring seat seal assembly parts should be replaced as follows: 1. O-ring seat seal (37) – always replace.

a. Lapped seat relief height “R” is less than “R” minimum and dimension “S” cannot be maintained (see Figure 12 and Table 7).

b. Length “S” is less than “S” minimum (see Table 7).

c. Retainer lockscrew - always replace.;

The O-ring disc holder should be replaced if: 1. The outside surface is worn, egged or galled and/or cannot meet “H” dimension (see Figure 14 and Table 8).

2. The spindle pocket bearing surface is galled or pitted.

3. The O-ring groove is nicked, scratched or pitted.

4. The O-ring retainer screw threads are torn, stripped or galled.;

The metal seat disc should be replaced if: 1. Seat surface “Y” (see Figure 12), is damaged beyond lapping or machining limits.

2. Seat relief height “R” is less than “R” minimum and dimension “S” cannot be maintained (see Table 7).

3. Length “S” is less than “S” minimum (see Table 7).;

Replace the spring washers if: 1. The bearing surface is galled, pitted or scratched.

2. Corrosion affects the centering of the spring.;