Chemical Cleaning Trim Kit - Emerson Fisher HP Instruction Manual

HP Control Valve Startup Trim
July 2019
Figure 6. Nut Tightening Pattern
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Installation of Chemical Cleaning Trim Kit
1. Install the bonnet spiral wound gasket (key 11) in the gasket groove on top of the body (key 1), making sure the
gasket sits flush on the surface of the groove.
2. Threaded surfaces of the studs (key 13), faces of the nuts (key 14), washers (key 40) and nut seating surfaces on the
bonnet (key 18) should be lubricated with nickel-based anti-seize lubricant prior to assembly.
Note
Take care not to introduce lubricant between the washer and the bonnet surface.
3. Apply nickel-based anti-seize lubricant to stem (key 46) and two jam nuts (key 47). Lock nuts together by threading
in opposite directions. See table 1 for recommended jam nut (key 47) torque values.
4. Install the stem/nut assembly (key 46, key 47) into the bonnet (key 18) such that the side with the two jam nuts
(key 47) is opposite of the packing box bore and will be inside the body when fully assembled.
5. Install packing per Fisher HP and HPA Control Valve Instruction Manual (D101634X012).
6. Apply nickel-based anti-seize lubricant and install two jam nuts (key 47) onto the side of the stem (key 46)
extruding from the packing box. Snug the nuts together, see table 1 for recommended jam nut (key 47) torque
values. These will be removed after chemical cleaning operation.
7. Lower the bonnet (key 18) and stem/nut assembly (key 46, key 47) over the bonnet studs (key 13) and onto the
valve body (key 1), making sure the bonnet (key 18) skirt will not damage the bonnet spiral wound gasket (key 11)
during assembly. When lowering the bonnet (key 18) in to the body (key 1), take care to ensure that the outside
diameter of the bonnet guides properly with body (key 1).
Note
The bonnet might not sit flush on the bonnet gasket until the bolts are completely tightened. Once tightened properly, the bonnet
will contact metal-to-metal with the valve body.
For bolt size larger than 1-1/2 inch, install washers (key 40) over the bonnet studs, taking care not to introduce
lubricant between the washer and the bonnet surface. Lubricant should be present between the seating surface of
the bonnet stud nut and the washer. Turn the nuts (key 14) onto the studs (key 13) until hand tight.
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Instruction Manual
D104480X012
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