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DeZurik BAW AWWA, Инструкция по установке, эксплуатации и обслуживанию, Страница: 16 / 16

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DeZURIK

 

3-20” BAW AWWA Butterfly Valves  

D10386 

Page 16

 

August 2013

 

Troubleshooting

 

Condition 

Possible Cause 

Corrective Action 

Packing leaks. 

Packing is loose. 

Adjust packing 
See “Packing Adjustment.” 

Packing is worn. 

Replace Packing. 
See “Packing Replacement.” 

Valve leaks when closed. 

Closed position stop is set 
incorrectly. 

Adjust closed position stop 

Seat is worn or Damaged. 

Replace valve. 

Sealing edge of disc is worn or 
damaged. 

Replace disc. 

Valve does not fully close. 

Object is wedged between seat 
and disc. 

Fully open valve to 
remove object. 

Closed position stop is not set 
correctly. 

Adjust closed position stop. 

Valve does not fully open. 

Open position stop is not 
adjusted correctly. 

Adjust open position stop. 

Opening and/or closing torque is 
excessive. 

Bearings, shaft, disc and/or seat 
are dirty or worn. 

Clean or replace dirty or worn 
component(s). 

Shaft is bent. 

Replace shaft. 

Packing gland screws are over-
tightened. 

Loosen screws and replace 
packing if needed. 

 

Содержание BAW AWWA

Страница 1: ...DeZURIK 3 20 BAW AWWA BUTTERFLY VALVES WITH TRANSFER MOLDED SEAT Instruction D10386 August 2013 ...

Страница 2: ...e safety precautions Always wear suitable protection when dealing with hazardous pipeline materials Handle valves which have been removed from service with suitable protection for any potential pipeline material in the valve Inspection Your BAW Butterfly Valve has been packaged to provide protection during shipment however it can be damaged in transport Carefully inspect the unit for damage upon a...

Страница 3: ... using Class 200 PVC 6 Installing All Valves 7 Operation 7 Disc Position Indicator 7 Position Stops 7 Drawings 8 Adjusting Packing 10 Valves without Packing Gland 10 Valves with Packing Gland 10 Replacing Packing Valves without Packing Gland 11 Valves with Packing Gland 11 Removing Valve 12 Disassembling Valve 13 Removing the Disc Shaft from Body 13 Reassembling Valve 13 Replacing Bearings 15 Trou...

Страница 4: ...s assembled using standard SAE fasteners To service this valve you should have a full set of combination wrenches flat tipped screwdrivers Allen wrenches a torque wrench sockets chisels a hooked tool for removing the packing and a dead blow hammer Lubrication The valve is lubricated at the factory and does not require routine lubrication When installing valve or if maintenance is required refer to...

Страница 5: ...he valve with slings chains or cables fastened around the valve body or fastened to bolts or rods through bolt holes in the flanges Refer to the installation drawing for dimensions and to identify components Requirements PVC pipe that does not meet AWWA standards may damage the valve If PVC pipe is used with mechanical joint valves the pipe O D must comply with AWWA C905 97 Table 2 PVC PIPE WITH C...

Страница 6: ...s Pipe Dimension Ratio Chamfer Seat Side Chamfer Opposite Seat Min Chamfer Dia in Chamfer Angle 4 200 14 No No N A N A 6 200 14 8 200 14 10 200 14 Yes No 9 62 30 12 200 14 Yes No 11 75 30 14 200 21 Yes No 13 75 30 235 18 Yes No 13 88 30 305 14 Yes Yes 14 00 30 16 165 25 No No N A N A 200 21 235 18 Yes No 15 68 30 305 14 Yes Yes 15 88 30 18 165 25 No No N A N A 200 21 235 18 Yes No 17 38 30 305 14 ...

Страница 7: ...ipment storage handling and installation it is recommended that each valve be tested while the valve is accessible in the pipeline Operation Turning the valve shaft clockwise closes the valve The valve is fully closed when the disc is centered on the seat valve is fully open when the disc is 90 counterclockwise from the closed position Disc Position Indicator The indicator notch on top of the valv...

Страница 8: ...DeZURIK 3 20 BAW AWWA Butterfly Valves D10386 Page 8 August 2013 Drawings Figure 2 Disassembled 3 20 BAW AWWA Butterfly Valve ...

Страница 9: ...DeZURIK 3 20 BAW AWWA Butterfly Valves August 2013 Page 9 D10386 Drawings Continued Figure 3 Assembled 3 20 BAW AWWA Butterfly Valve ...

Страница 10: ...and lock out the pneumatic hydraulic or electrical power to prevent accidental operation of the actuator 3 Remove the actuator and adapter if included from the valve 4 Slide spacers down the valve shaft so that they protrude 1 32 1 16 above the body Note Spacers can be Garlock style 7857 260 rock hard rubber Grade A D or E Bronze or 316 stainless steel 5 Replace the actuator on the valve 6 If pack...

Страница 11: ...11 or Phoenix 505 to the inside and outside diameters of the new packing then install the new packing one ring at a time Note Start each chevron ring into the packing chamber at a slight angle and push each ring carefully into position so that the sealing lips do not bend mover Push the packing firmly into place Do not use a sharp or pointed tool 6 Replace the actuator adaptor if included and the ...

Страница 12: ...d Tighten the screws evenly and gently just enough to stop the leakage Over tightening will cause excessive operating torque and will decrease the life of the packing 12 If the actuator is a powered actuator reconnect power to the actuator Removing Valve Lifting the valve improperly may damage it Do not fasten lifting devices to the actuator disc or through the seat opening in the body Lift the va...

Страница 13: ...eassembling Valve 1 Block the body A1 in a horizontal position with the seat facing down Note Provide clearance for the disc above and below the seat opening 2 Apply a paint like coating of an NSF 61 approved lubricant such as Dow Corning 111 or Phoenix 505 to the two flat pads near the holes for the shaft 3 Holding the disc A2 in a vertical OPEN position with the shaft connection toward the top o...

Страница 14: ... Table B Table B Plug Torque Valve Size Torque Ft Lbs 3 13 2 4 20 2 6 60 5 8 85 5 10 130 5 12 190 5 Figure 4 Disc to Shaft Connection on 3 12 On sizes 14 16 align and center the flat on the shaft with the tapped hole in the disc Insert the pin A4 into the mating hole in the disc A2 so that the flat on the pin is centered on the flat on the shaft Tap the pin firmly into position with a hammer and p...

Страница 15: ...curely in the threaded hole in the bottom of the body 7 If the valve has a packing gland mount the gland A25 with the two screws A26 and washers A27 Tighten the screws evenly and finger tight plus 1 2 turn 8 Mount the actuator and adapter if included to the valve Replacing Bearings 1 To replace bearing disassemble the valve as instructed in the disassembling valve section 2 Remove the bearings fro...

Страница 16: ... valve Sealing edge of disc is worn or damaged Replace disc Valve does not fully close Object is wedged between seat and disc Fully open valve to remove object Closed position stop is not set correctly Adjust closed position stop Valve does not fully open Open position stop is not adjusted correctly Adjust open position stop Opening and or closing torque is excessive Bearings shaft disc and or sea...

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