Instruction Manual
D100394X012
EH (1-1/2x1 through 8x6)
July 2017
16
5. After lapping, again disassemble as necessary, clean the seating surfaces, reassemble, and test for shutoff. Repeat
the lapping procedure if necessary.
Trim Replacement
After all trim maintenance has been completed, reassemble the valve by following the numbered steps below. Be
certain that all gasketed surfaces have been well cleaned. Key numbers referenced in this procedure are shown in
figure 18 for the EHD valve, in figure 19 for the EHS valve, and in figure 20 for the EHT valve.
Figure 8. Trim Surfaces Requiring Lubrication
SEAT RING RETAINER
A3583
SEAT RING GASKET OR O‐RING
SEAT RING
VALVE BODY
LUBRICATION REQUIRED
1
1
1
CAUTION
Thoroughly clean the seat ring (key 6), seat ring retainer (key 7), and the retainer threads in the valve body with a
good‐quality degreaser. Also clean all cage gasket surfaces. All residual gasket material must be removed from the cage
gasket surfaces and, in gasketed seat ring constructions, from the serrated valve body and seat ring gasket surfaces. If the
serrations are scored or damaged during this process, smooth them by hand sanding with 360 grit paper using long,
sweeping strokes. Failure to remove all residual gasket material and/or burrs from the seat ring, cage, and valve body
gasket surfaces will result in leakage.
Thoroughly lubricate the surfaces indicated in figure 8 with the appropriate lubricant shown in table 11. Be certain to
lubricate the mating surfaces of both parts involved (i.e., lubricate the threads on the seat ring retainer and the threads in
the valve body; lubricate the mating surfaces of the seat ring retainer and seat ring).
Failure to lubricate as described may cause galling and improper gasket or O‐ring (key 12) loading that may result in
leakage.
