manualshive.com logo in svg

DeZurik APCO SRG-6500, Instruction Manual, Page: 10 / 11

Share
Download
DeZurik APCO SRG-6500 Instruction Manual Download Page 10

DeZURIK

 

APCO SRG-6500 Surge Relief Globe Valves 

D12020 

Page 10

 

December 2012

 

Troubleshooting 

Condition 

Possible Cause 

Corrective Action 

Shaft seal leaks. 

Seal is worn. 

Replace seal. 

Valve leaks excessively from 

one side of the disc to the other. 

Foreign matter caught between 

disc and seat. 

Fully open valve to remove 

object. 

Disc seat is worn or damaged. 

Replace disc seat. 

Valve leaks at flange joint. 

Loose flange bolting. 

Tighten flange bolting. 

Blown flange gasket. 

Replace flange gasket. 

Miss-alignment or damage to 

field piping and supports. 

Adjust miss-alignment or repair 

piping or supports. 

Damaged flange face/s or 

improper flange connections. 

Repair flange, replace valve 

body or adjust flange 

connections. 

Valve does not fully close. 

Object is wedged between seat 

and disc. 

Fully open valve to remove 

object. 

 

Summary of Contents for APCO SRG-6500

Page 1: ...APCO SRG 6500 SURGE RELIEF GLOBE VALVES Instruction D12020 December 2012 ...

Page 2: ...ion during shipment however items can be damaged in transport Carefully inspect the unit for damage upon arrival and file a claim with the carrier if damage is apparent Parts Replaceable wear parts are listed on the assembly drawing These parts can be stocked to minimize downtime Order parts from your local DeZURIK sales representative or directly from DeZURIK When ordering parts please provide th...

Page 3: ...escription 4 Handling and Storage 4 Installation 4 Fusion Powder Coated Valves 5 Maintenance 5 Disassembly 5 Assembly 6 Disc Seat Replacement 7 Operation 7 Start up Procedure 7 Oil Filling Procedure 8 Adjustment of Flow Control Valve 8 Operation of Internal Cushion 8 Drawings 9 Troubleshooting 10 ...

Page 4: ... Surge Relief valves are delivered to the jobsite factory adjusted and ready for installation It should always be installed with the replaceable resilient seat of the disc facing the system pressure The valve outlet must be piped to discharge into the wet well or into a spillway Valve may be installed in a horizontal or vertical position with the flow upward In either case counterweight arm 44 sho...

Page 5: ...ore servicing the valve 1 Relieve the pressure in the pipeline 2 If it is necessary to remove valve from pipeline set valve standing on its inlet flange 3 Support counterweight 29 then unscrew counterweight set screw 36 and remove counterweight assembly 44 4 Loosen nut 56 holding counterweight arm assembly to pivot shaft 13 and remove counterweight arm assembly 5 Disconnect the pin between cushion...

Page 6: ...ar 9 Insert pivot shaft key 33 in keyway on pivot shaft 13 10 Install pivot shaft 13 from right side of body 1 through disc arm 9 until pivot shaft collar is flush with body 11 Insert pivot shaft straight bushing 11 into the body 1 at the other end 12 Insert pivot shaft seal 17 and pivot shaft cover seal 18 in their respective grooves 13 Insert pivot shaft seal retainer 37 on pivot shaft cover and...

Page 7: ... chamber from the oil reservoir through the flow control valve 59 The amount that disc will open depends on the surge pressure and velocity of the media flowing through the valve When surge pressure has been relieved and pressure in the system drops to normal the disc will close The speed at which the disc returns to the closed position is controlled by adjusting the flow control valve Opening the...

Page 8: ...al Cushion As illustrated below the cushioning of a pneumatic hydraulic cylinder stroke is obtained by trapping the exhaust air oil as the piston assembly nears the end of its stroke In Figure 2 as the Cushion Plunger 1 enters Cushion Cavity 2 the exhaust air oil is almost completely trapped by the Ball Check 3 and the Adjusting Screw 4 creating a back pressure against Piston Assembly The back pre...

Page 9: ...nder Bracket Mounting Screw 23 Eye Bracket Lock Washer 24 Cylinder Bracket 25 Eye Bracket Mounting Screw 26 Eye Bracket Nut 27 Cushion Lever 29 Counter Weight 30 Piping Detail 31 Seat Retaining Ring 32 Seat Retaining Ring Screw 33 Pivot Shaft Key 36 Counter Weight Arm Set Screw 37 Pivot Shaft Seal Retainer 39 Disc Stop Lock Nut 40 Seat Retaining Set Screw 41 Disc Pin Retaining Ring 42 Cover Pipe P...

Page 10: ...lve to remove object Disc seat is worn or damaged Replace disc seat Valve leaks at flange joint Loose flange bolting Tighten flange bolting Blown flange gasket Replace flange gasket Miss alignment or damage to field piping and supports Adjust miss alignment or repair piping or supports Damaged flange face s or improper flange connections Repair flange replace valve body or adjust flange connection...

Page 11: ...ll be the only effective guarantee or warranty binding on Seller despite anything to the contrary contained in the purchase order or represented by any agent or employee of Seller in writing or otherwise notwithstanding including but not limited to implied warranties THE FOREGOING REPAIR AND REPLACEMENT LIMITED WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES OBLIGATIONS AND LIABILITIES INCLUDING ALL W...

Reviews:

No comments