Instruction Manual

Instruction Manual

D100390X012

ED Valve

October 2014

Note

The ENVIRO-SEAL stem/bellows assembly has a one-piece stem.

6. To attach the valve plug to the stem of the new ENVIRO-SEAL stem/bellows assembly, it is necessary to first attach

the plug to the adaptor (key 24). Locate the adaptor. Notice that a hole has not been drilled in the threads where

the plug screws onto the adaptor. Secure the valve plug in a soft-jaw chuck or other type of vise. Do not grip the

plug on any seating surface. Position the plug in the chuck or vise for easy threading of the adaptor. Thread the

adaptor into the valve plug and tighten to the appropriate torque value.

7. Select the proper size of drill bit and drill through the adaptor using the hole in the valve plug as a guide. Remove

any metal chips or burrs and drive in a new pin (key 8, figures 19, 20, and 21) to lock the plug/adaptor assembly

together.

8. Attach the plug/adaptor assembly to the ENVIRO-SEAL stem/bellows assembly by first securing the stem/bellows

assemblyinasoft-jawchuckorothertypeofvisesothatthejawsofthechuckorvisegriptheflatsofthestem

extendingoutofthetopofthebellowsshroud.Screwthevalveplug/adaptorassemblyontothevalvestem.

Tighten the plug/adaptor assembly until it is snug. Then turn the plug/adaptor assembly to the next pin hole in the

valve stem. Drive in new pin (key 36, figure 18) to lock the assembly.

9. Inspect the seat ring (key 9). Replace, if necessary.

Table 6. Recommended Torque for ENVIRO-SEAL Bellows Seal Bonnet Packing Flange Nuts

VALVE SIZE,

NPS

VALVE STEM

DIAMETER THROUGH

PACKING

MINIMUM TORQUE MAXIMUM TORQUE

NSm LbfSin NSm LbfSin

1/2 - 2 1/2 2 22 4 33

3-8 1 5 44 8 67

10. Place a new gasket (key 10) into the valve body in place of the bonnet gasket. Install the new stem/bellows

assembly with valve plug/adaptor by placing it into the valve body on top of the new bellows gasket.

11. Place a new gasket (key 22) over the stem/bellows assembly. Place the new ENVIRO-SEAL bonnet over the

stem/bellows assembly.

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.

12. Properly lubricate the bonnet stud bolts. Install and tighten the bonnet hex nuts to t he proper torque.

13. Install the new packing and the metal packing box parts according to the appropriate arrangement in

figure 12 or 13.