The recently concluded 5th annual Connected Plant Conference (CPC COVER STORY Monitoring Ammonia and Other Toxic Gas Hazards After the ring has been installed, remove the instal-Ĥ.× COMMENTARY EDITOR'S PAGE Implementing digital transformation ‘Removal’ section, applying enough pressure to allow the retaining ring to be installed.ģ. Place the installation tools together as outlined in the Necessary to replace all gaskets each time the valve is disassembled.Ģ. Install new seat gasket and relocate seat ring. Refer to Figure 1 and proceed as follows:ġ. With the retaining ring removed, the assembly canīe unbolted and the seat ring and gasket may be pulled out. Ring can be easily removed with a screwdriver in- serted into the slot provided in the ring.ħ. NOTE: High bolt torque will be necessary to com- press the O-ring.Ħ. Tighten until seat ring O-ring gasket is compressed. Bolt the two plates together using the supplied bolts.ĥ. Insert the top compression plate (installation toolĬAUTION: Do this operation carefully, making sure the seating surface is not galled or scored.Ĥ. Seat ring so that the tool engages the body (refer to Figure 1).ģ. Insert the base plate (installation tool No.

Failure to do so can cause serious injury.Ģ. WARNING: Drain all fluids from valve and depres- surize line to atmospheric pressure. Disassemble the valve as outlined in Installation, To disassemble these special Valtek Mark Eight valves, refer to Figure 1 and proceed as follows:ġ. Special tools for disassembly are included with the valve shipment (if replacements are required, contact a local Flowserve sales office). Instead, a spiral retaining ring is used to hold the seat firmly in place. Valtek Mark Eight valves used on high temperature applications do not have a seat retainer. On high temperature applications, Valtek Mark Eight valves use a special seat retaining ring.

Standard Valtek Mark Eight valves are identical to Valtek Mark One valves with exception of the “Y-body” configu- ration. To avoid possible injury to personnel or damage to valve components, WARNING and CAUTION notes must be strictly adhered to. Product users and maintenance personnel should thoroughly review this bulletin in con- junction with separate Flowserve Installation, Opera- tion, Maintenance Instructions 1 (Mark One and Two Control Valves) and 2 (Cylinder Actuators) before in- stalling, operating, disassembling, or performing any maintenance on the valve.

The following instructions are designed to assist in performing maintenance as required on ValtekĮight control valves.

Flowserve valve maintenance manual