Fisher dvc5020 manual

Pierce the rings with the sharp end of the hook in order to remove them. Do not scratch the drive shaft or packing box wall; scratching these surfaces could cause leakage. Clean all accessible metal parts and surfaces to remove particles that would prevent the packing from sealing. For 8-, , and inch, install the packing spacer key 34, figure 15 or 23 if it has been removed.

To help ensure correct centering of the Vee-ball key 2 on the seal key 11 , make sure the ball is closed while you install or tighten new packing. Insert a screw driver, pry bar, or similar tool between the lower ear of the ball and the valve body.

Use the pry to move the ball tightly against the thrust washer and bearing on the actuator side of the valve see figure 7. Keep the ball in that position until you have completed packing installation. Install the new packing parts using the parts sequence shown in figure 6. Install the packing follower key Alloy constructions have a packing follower key 17 and a separate packing flange key 40 that must be replaced.

Secure the packing follower with the packing follower nuts key Tighten the nuts far enough to stop leakage under operating conditions.

Note If the valve is equipped with a bonding strap assembly figure 3 , re-install the assembly. Reconnect the actuator and lever in accordance with the orientations that were noted in step 3 of the disassembly procedures. If necessary, use figures 20 and 14 to identify the correct index marks.

Refer to the appropriate actuator instruction manual to complete actuator assembly and adjustment. When the control valve is in operation, check the packing follower for leakage and retighten the packing follower nuts key 20 as necessary. Replacing the Ball Seal Disassembly Perform this procedure if the control valve is not shutting off properly or if seal inspection is necessary.

If you find upon inspection that the ball, shaft, or bearings need to be replaced, use this procedure to remove the ball seal. Then, proceed to the Bearing and Ball Maintenance procedures. Then, return to this procedure and begin with the assembly of the ball seal steps.

Key numbers are shown in figures 15, 22, and 23, unless otherwise indicated. Ball Seal assembly details with key numbers are also shown in figures 9 and Remove line bolting, remove the control valve from the pipeline, and place the valve on a flat surface with the seal protector ring facing up. Carefully rotate the ball to the open position. Remove protector ring screws and washers keys 21 and Carefully remove the seal protector ring and gasket keys 3 and For flow ring constructions, go to step 4.

For a Fisher TCM seal, remove the seal key 11 from the valve body. For a flat metal seal, remove the spring seal, seal, and shims keys 13, 11, and Note: It may be necessary to re-use some of the original shims when reassembling the flat metal seal. For an HD metal seal, once the protector ring has been removed from the valve, push the metal seal key 11 out of the seal protector ring key 3.

Remove the wave spring and radial seal keys 13 and R It might be necessary to remove the HD metal seal by carefully tapping it with a soft punch and hammer.

Take care not to damage the seal protector ring. R 3- through inch valves, where the seal is difficult to push out, it is recommended that a seal removal plate be used to press the HD metal seal out of the seal protector ring. Refer to figure 9 for dimensions of the seal removal plate. R and inch valves with an attenuator only: Remove the retaining ring key 41 in the seal protector ring.

This retaining ring is an octagonalshaped support wire. To remove the retaining ring, find one of the free ends of the ring. Use a screwdriver or similar tool to pry inward and upward until the ring is removed.

Inspect the gasket and sealing surfaces on the valve body key 1 or 1A , the seal protector ring key 3 , Vee-ball key 2 , and the retaining ring key 41 for and inch valves with an attenuator only.

Be sure the sealing surfaces are not damaged. If replacement of the ball, shafts keys 6 or 9 , or bearings key 10 is needed, proceed to the Bearing and Ball Maintenance procedure. If only the seal is to be replaced, proceed to the Assembly steps below.

Assembly Refer to figures 9 and 10 for key number locations during seal installation. Valve key number locations are shown in figures 15, 22, and Thoroughly clean all parts that are to be re-used and obtain replacement parts. Be sure that all sealing surfaces are in good condition without scratches or wear. If the valve has been installed between line flanges and the flange studs and nuts have been tightened, always replace the gasket key 15 with a new gasket.

To help ensure correct centering of the ball key 2 on the seal key 11 , make sure the ball is closed while you install the seal or flow ring and seal protector ring. Insert a screw driver, pry bar, or similar tool between the lower ear of the or ball and the valve body see figure 7.

Section 1 3. Use the pry to move the ball tightly against the thrust washer and bearing on the actuator side of the valve. Be careful, excessive force may damage the ball.

Keep the ball in that position until you have completed seal or flow ring installation. To avoid injury or property damage, keep hands, tools, and other objects away from the Vee-Ball while stroking the valve.

Installing Fisher TCM ball seals: a. Install the Fisher TCM seal key 11 into the valve body. Refer to figure 8. R Install the gasket key 15 on the valve body. R Install the seal protector ring key 3 into the valve body. Now go to step 8 in this procedure. Installing flat metal seals: a. Install 12 shims in the valve and install the flat metal seal on top of the shims see figure 9.

Install the spring seal key 13 on the flat metal seal key 11 with the convex side of the spring seal facing the ball. Install the seal protector ring, and install the protector ring screws and washers keys 21 and Tighten the screws. Add or remove shims under the ball seal as necessary to obtain zero ball seal deflection as accurately as possible. Zero ball seal deflection for a flat metal seal is the point at which the addition of one 0.

Hold the parts tightly together when determining zero deflection, or improper zero deflection might result. After zero deflection is reached, remove the seal protector ring, spring seal, seal and 4 shims. Final assembly of control valve should not exceed a maximum of 9 shims for zero deflection. If more than 9 shims are required, contact your Fisher Controls sales office or sales representative.

Install the gasket key 15 on the valve body. Install the seal protector ring key 3 into the valve body. Installing HD metal seals: a.

Both rings serve the same function, but are of different dimensions. Refer to the note at the beginning of the Parts List and figure 8 for ring dimensions.

R Lubricate and install the radial seal key 37 onto the ball seal key Make sure the open side of the radial seal faces away from the ball. R Push the ball seal assembly into the seal protector ring key 3. R Go to step 9 in this procedure. For all 3- through 8-inch valves and and inch valves without attenuator: R Lubricate and install the radial seal key 37 into the appropriate groove in the seal protector ring making sure the open side of the radial seal faces away from the ball.

For and inch valves with attenuator: R Lubricate and install the radial seal key 37 into the appropriate groove in the seal protector ring making sure the open side of the radial seal faces away from the ball. R Install the wave spring key 13 into the seal protector ring key 3. R To install the retaining ring key 41 , find one of the free ends of the ring.

Insert the free end into the groove in the seal protector ring. Work around the ring, pressing it into the groove until the ring is completely in its groove. R Install the HD metal seal key 11 into the seal protector ring key 3 , past the radial seal. While pushing it past the radial seal, make sure the HD metal seal is level.

R The HD metal seal uses a retaining ring key 41 for and inch sizes only. This retaining ring is an octagonal-shaped support wire. Go to step 8 in this procedure. Install a replacement gasket key 15 on the valve body key 1 or 1A. Install washers or clips , and screws that clamp the seal protector ring to the valve body [keys 3, 21, and 22; the Design V valve uses clips key 22 in place of washers].

If necessary, refer to the Packing Maintenance procedures to install the packing. Install the actuator using the Actuator Mounting procedures or to the appropriate actuator instruction manual. To assist with break-in of the HD metal seals, it is recommended that the ball and seal be lubricated with Dow Corning dry film lubricant or equivalent moly disulfide.

Bearing and Ball Maintenance Procedures for disassembly and assembly of the bearings and ball can not be accomplished until the ball seal and valve packing are removed from the valve. Refer to the Replacing Packing procedures to remove the actuator, and to remove the packing flange and packing follower from the valve. When the packing disassembly steps are complete, return to this section.

Refer to the Replacing the Ball Seal procedures to remove the ball seal from the valve. For tack welded taper keys, driving the taper key out of the ball ear will shear the tack welding. Working from the small end of the groove pin key 7 , use a pin punch to drive the groove pin out of the ball ear and follower shaft. Pull the drive shaft key 6 out of the actuator side of the valve body.

Remove the thrust washer key Make sure the sealing surface of the ball is not damaged while removing the follower shaft. If a pipe plug key 25 is installed, use a punch to drive the follower shaft key 7 into the center of the ball. To avoid injury, carefully rotate the ball to the bottom of the valve body cavity. Make sure the ball will not rotate. Key numbers in this procedure are shown in figures 15, 22, and 23, unless otherwise indicated. A taper key key 4, figure 20 is used to connect he ball and drive shaft in 3- through inch valves.

Carefully rotate the ball to the open position after the actuator is disconnected. Make sure the ball will not rotate see warning above. Provide support for the ball during the following disassembly.

Unscrew the pipe plug key The pipe plug is optional and may not be available. Locate the small end of the taper key key 4, see figure Using a pin punch on the smaller end of the taper key, drive it out of the ball key 2 and drive shaft key 6.

Note: driving the taper key in the wrong direction will tighten it. If a pipe plug is not installed, use a piece of continuous threaded rod as a removal rod when moving the follower shaft key 7 into the center of the ball. Refer to the table 3 shown below for a description of the size threaded rod needed.

The length of the rod should allow easy working room from the valve body. Removing the ball key 2 : a. For Vee-Ball without attenuator, carefully remove the follower shaft and ball from the valve body. Remove the thrust washer key 38 when the drive shaft is removed. For Vee-Ball with attenuator sizes 4through inch valves , carefully remove the follower shaft and ball from the valve body. For Vee-Ball without attenuator, carefully install the ball into the valve body cavity.

Remove the bearings key 10 by hand. If the bearings are tight in the valve body, then pull or drive them out with a slight pressure.

If you do not have such a tool, you can machine the bearing out. For Vee-Ball with attenuator sizes 4 through inch valves , carefully install the ball into the valve body cavity. After you have installed the ball key 2 into the valve body assembly, firmly support the ball while installing the shafts.

Installing the follower shaft key 9 :. R For 4-inch and larger valves without attenuator: Insert the follower shaft key 9 through the ball, and into the valve body bearing key Insert the follower shaft key 9 into the valve body bearing key Inspect all sealing surfaces to ensure they are in good condition and without scratches or wear.

Install the bearings key 10 by hand. The bearing flanged end should touch the valve body. Installing the Vee-Ball:. To avoid personal injury or damage to the sealing surfaces, support the ball to pre-. R For 3-inch valves: The follower shaft key 9 should already have been inserted into the ball before the ball was put into the valve body. Then for all sizes, align the hole in the follower shaft with the holes in the ball. Insert the small end of the groove pin key 7 into the hole in the ball and into the follower shaft.

The pin will hold the parts in place while the drive shaft key 6 is being installed. Make sure the drive shaft is free of oil or grease, otherwise the taper pin will not seat properly. Insert the drive shaft into the valve body bearing key 10 , and into the ball ear.

Align the hole in the drive shaft with the holes in the ball. Insert the taper key into the ball and drive shaft as shown in figure Use standard welding preparations when preparing parts for reassembly.

Make sure the drive shaft key 6 is free of oil or grease, otherwise the taper key will not seat properly. Install the drive shaft key 6 into the valve body through the ball and into the lower bearing. Insert the taper key key 4 into ball and drive shaft keys 2 and 6 as shown in figure The taper key inserts, with the flat side of the key, facing the drive shaft key 6.

Alloy valve taper keys are normally not welded. When the above conditions are met, tack weld the taper key key 4 to the ball ear on the head end of the key see figure For all constructions: Refer to Replacing the Ball Seal, Packing Maintenance, and other procedures as necessary to complete the assembly of the valve.

Using a flat end punch, drive the groove pin key 7 into the ball ear and follower shaft until it is flat with the ball ear surface. Stake both ends of the pin hole with a center punch to insure the groove pin does not come out.

Use the appropriate actuator instruction manual, this section of this manual, and figures 20 and 14 of this manual when mounting the actuator or changing actuator styles and positions. Using a flat end punch, drive the taper key key 4 into the ball ear and drive shaft key 6 until solid, heavy contact is obtained between the key and shaft. To help ensure correct centering of the Vee-Ball key 2 on the seal key 11 , be sure the ball is closed when mounting the actuator for applications other than Spring Return Fail-Open.

Measure the position of the taper key head. Drive the taper key in further using the minimum distance shown in table 4. Clean the valve shaft and actuator lever splines to be sure the actuator lever will slide on easily. Only drive the lever in if absolutely necessary. If not, the taper key must be driven in further until this condition is satisfied. However, do not exceed the maximum depths shown in table 5. Carefully wedge the ball solidly against the actuatorside thrust washer, if applicable, using a screwdriver or similar tool inserted between the lower ear of the ball and the valve body.

This will center the ball. Determining Closed Position 1. The valve must be removed from the line to check the position of the ball.

The Vee-Ball closes with a shearing, cutting motion. To avoid personal injury, keep hands, tools, and other objects away from the ball while stroking the valve. Rotate the ball to the closed position. Keep the wedge in place while installing the lever, if necessary.

Remove the wedge after you have clamped the actuator lever on the valve shaft and have connected the lever to the actuator piston rod or diaphragm rod. Determining Mounting Position The actuator can be either right or left-hand mounted, with the actuator on the right or left side when viewed from upstream.

The Vee-Ball has one V-notch. For right-hand mounting, the ball will be in the top of the valve body when the valve is open. For left-hand mounting the ball will be in the bottom of the valve body when the valve is open.

A V-notch ball for left hand mounting which rotates into the top of the valve body is available. When viewed from the valve body outlet, the ball is in the proper position when the spot on the top of the ball is exactly in the center of the seal package.

Make a copy of the centering template in figure Place the copy of the centering template over the opening at the seal. Find the bullseye of the template and make sure the spot on the ball is directly below it.

Adjust the actuator linkage as described in the appropriate actuator instruction manual until the ball is centered in the close position. A line is stamped on the actuator end of the drive shaft see figures 20 and 14 to indicate the V-notch ball position. Figure All Type Vee-Ball valves with Attenuators, all 1through 2-inch, and 3- through inch valves produced before the design changes use the Specifications table, the Installation, Maintenance, Packing Maintenance, Replacing Packing, and Replacing the Ball Seal instructions found in Section 1.

All other instructions for these valves may be found below. To avoid injury, carefully rotate the ball to the open position. A taper key key 4, figure 13 is used in 3- through inch valves. And, a taper pin figure 17 is used in the 1-inch size Metal Micro-Notch valve.

Ceramic Micro Notch ball constructions: A screw key 4, figure 19 is used to attach the ball to the drive shaft. The parts are held together with a screw and Loctite product. Remove the screw key 4 and separate the drive shaft from the ball.

In some cases, a small amount of heat can be applied to help loosen the adhesive. However, excessive heat may damage other valve component parts. Once the shafts have been removed from the valve body, the ball may fall. To avoid personal injury or damage to the sealing surfaces, provide support for the ball to prevent it from falling as the shaft s are being removed.

With newer valve constructions, the pipe plug is optional and may not be available. For 3-inch and larger valves with metal bearings, remove the thrust washer key For proper shutoff performance, the ball and seal require the bearing key 10 to be positioned correctly.

If you removed the bearings key 10 , be sure to locate the new bearings as shown in figure Thoroughly clean surfaces of all parts that are to be re-used or obtain replacement parts. If a pipe plug is not installed, use a piece of continuous threaded rod as a removal rod when moving the follower shaft key 7 into the center of the V-notch ball. Refer to the table 6 for a description of the size threaded rod needed. Remove the ball key 2 by carefully removing the follower shaft and ball from the valve body, and for valves with metal bearings, remove the thrust washers on the drive shaft key Remove the packing box spacer key 34 for 8-, , and inch valves.

Previous Page. Next Page. Fieldvue dvc series hazardous area approval nameplates 17 pages. Page 2! Page 3! Page 4! It defines how the HART electro-pneumatic valve mounted positioners. Page 8: Supply Connections Due to the connection on the regulator. Page 9: Electrical Connections Installation Vent Electrical Connections WARNING To avoid personal injury or property WARNING damage caused by fire or explosion, remove power to the instrument be- If a flammable, toxic, or reactive gas is fore removing the terminal box cover to be used as the supply pressure me- in an area which contains a potential- dium, personal injury and property ly explosive atmosphere or has been Page 10 DVC Series 4.

When the loop is ready for startup, apply power to the control system output card. Adjust the exceed 3. If not, perform Initial Setup procedure on page Is calibration complete? If not, perform Auto Calibrate Travel procedure on page Does the final control element correctly respond to a setpoint change and is it stable? If not, perform Stabilizing or Optimizing Valve Response on page Do not bump or damage the bare connector pins on the printed wir- ing board assembly.

Page Submodule Maintenance Maintenance 9. For sliding-stem applications only, install the protective shield key onto the side of the replacement module base assembly. Properly orient the printed wiring board assembly as you install it into the module base. The two Refer to figure for parts identification.