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Instruction Manual

D101634X012

HP and HPA Valves

October 2014

Figure 10. HPD with C-seal Trim

FLOW DOWN FLOW UP

VIEW A

37B1399-A

CAUTION

Failure to comply with good bonnet-to-body bolting practices and the torque values shown in t able 8 may result in damage

to the valve. Cheater bars or slug wrenches should not be used for this procedure.

Hot torquing is not recommended.

Note

Stud(s) and nut(s) should be installed such that the manufacturer's trademark and material grade marking is visible, allowing easy

comparison to the materials selected and documented in the Emerson/Fisher serial card provided with this product.

WARNING

Personal injury or damage to equipment could occur if improper stud and nut materials or parts are used. Do not operate or

assemble this product with stud(s) and nut(s) that are not approved by Emerson/Fisher engineering and/or listed on the

serial card provided with this product. Use of unapproved materials and parts could lead to stresses exceeding the design

or code limits intended for this particular service. Install studs with the material grade and manufacturer's identification

mark visible. Contact your Emerson Process Management representative immediately if a discrepancy between actual

parts and approved parts is suspected.

3. Lubricate the stud threads and the faces of the hex nuts (key 14) with anti-seize lubricant (not necessary if new

factory prelubricated hex nuts are used). Replace the hex nuts, but do not tighten them. Torque the nuts in a

crisscross pattern to no more than 1/4 of the nominal torque value specified in table 8. When all nuts are tightened

tothattorquevalue,increasethetorqueby1/4ofthespecifiednominaltorqueandrepeatthecrisscrosspattern.

Repeat this procedure until all nuts are tightened to the specified nominal value. Apply the final torque value again

and, if any nut still turns, tighten every nut again.

4. Install new packing and packing box parts per steps 15 and 16 of the Replacing Packing procedure. Be certain to

observe the note given prior to step 15 of that procedure.

5. Mount the actuator by following the procedures in the actuator instruction manual. Check for packing leakage as

the valve is being put into service. Retorque the packing flange nuts as required (see table 7).

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PROCEED HPA 3 Bedienerhandbuch Seite 22