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DeZurik APCO CSD-800, User Manual, Page: 17 / 18

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DeZurik APCO CSD-800 User Manual Download Page 17

DeZURIK

 

 

APCO CSD-800 Slanting Disc Check Valves 

July 2017 

Page 17 

D12012 

Troubleshooting 

Condition 

Possible Cause 

Corrective Action 

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. 

Seat ring and/or disc ring are 
worn or damaged. 

Replace seat ring and/or disc 
ring. 

Valve leaks at flange joint. 

Loose flange bolting. 

Tighten flange bolting. 

Blown flange gasket. 

Replace flange gasket. 

Misalignment or damage to field 
piping and supports. 

Adjust misalignment or repair 
piping or supports. 

Damaged flange face/s or 
improper flange connections. 

Repair flange, replace valve 
body or adjust flange 
connections. 

 

Summary of Contents for APCO CSD-800

Page 1: ...APCO CSD 800 SLANTING DISC CHECK VALVES Instruction D12012 July 2017 ...

Page 2: ...removed from service with suitable protection for any potential pipeline material in the valve Inspection Your APCO CSD 800 Slanting Disc Check Valve has been packaged to provide protection during shipment however it 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 Recommended spare parts are listed on the ...

Page 3: ...alves 5 CSD 800 TMD Valves 5 Valve Body Disassembly 6 Valve Body Assembly 6 Operation 7 CSD 800 BMB Valves 7 CSD 800 TMD Valves 8 Start up Procedure CSD 800 Valves 10 Start up Procedure CSD 800 BMB Valves 10 Start up Procedure CSD 800 TMD Valves 11 Adjustment of Flow Control Valve 12 Operation of Internal Cushion 13 Oil Filling Procedure 13 CSD 800 BMB Valves 13 CSD 800 TMD Valves 14 Drawings 15 T...

Page 4: ...urface for protection from ground moisture runoff and pooled rain water Installation The APCO CSD 800 Slanting Disc Check Valve may be installed in a horizontal position Contact DeZurik if installed in vertical position with the flow upward The embossed flow arrow on the valve body should be pointing in the direction of flow In all cases however with the CSD 800 BMB the tanks 27 and 32 must always...

Page 5: ...ngs one in each body half These covers may be removed to observe inside the valve to determine whether any leakage or blockage is occurring CSD 800 BMB Valves The CSD 800 BMB Slanting Disc Check Valve is shipped from the factory fully lubricated and oil tanks filled with hydraulic oil to their proper levels ready for installation It requires a very minimal amount of preventive maintenance Special ...

Page 6: ...Gasket 5 Inspection Hole Bolts 6 Diagonal Flange Seal 7 Diagonal Flange Bolts 8 Seat Ring 10 Disc 11 Disc Ring 12 Disc Ring Screws 13 Pivot Pin 14 Pivot Pin Bushing 15 Pivot Pin Gasket 16 Pivot Pin Cover 17 Pivot Pin Cover Bolts 18 Grease Fitting 19 Seat Ring Seal 20 Disc Ring Gasket 21 Locating Pin 22 Indicator Assembly Figure 6 CSD 800 Slanting Disc Check Valve ...

Page 7: ...he disc 10 7 Inspect all wear parts and seating surfaces and replace if necessary Valve Body Assembly See Figure 6 for part identification 1 If seat ring 8 is damaged remove seat ring from seat body half 1 If seat ring seal 19 is damaged remove old seat ring seal and place new seat ring seal and new seat ring in seat body half 2 If diagonal flange seal 6 is damaged remove old seal from seat body h...

Page 8: ... open through this 55 seat angle traveling a short distance stopping at 15 off the horizontal CSD 800 BMB Valves See Figure 1 for part identification Bottom Mounted Buffers are used when a free open and partial control of the disc during the closing cycle is required This unique arrangement allows the valve disc to close freely for the major portion of its travel from full open to close During the...

Page 9: ...ed Oil Dashpot offers single stage control in the opening cycle and two stage control in the closing cycle The primary control of the closing cycle and full control of opening cycle are the Flow Control Valves 64 The primary control of the closing cycle handles the first stage of the disc movement The secondary control is located in the head of the cylinder itself which is the cushion adjustment a...

Page 10: ...lange Seal 54 Pivot Linkage 7 Diagonal Flange Bolt 55 Connecting Rod 8 Seat Ring 56 Dashpot Spacer 10 Disc 57 Bushing Retaining Ring 11 Disc Ring 58 Connecting Rod Bushing 12 Disc Ring Retaining Screws 59 Dashpot Cylinder 13 Pivot Pin 60 Bushing Retaining Screw 14 Pivot Pin Bushing 61 Bushing Seal 15 Pivot Pin Gasket 62 Connecting Rod Seal 16 Pivot Pin Cover 64 Flow Control Valve 17 Pivot Pin Cove...

Page 11: ... Procedure CSD 800 BMB Valves See Figure 1 for part identification 1 Check for proper oil levels Make sure both oil tanks are in vertical position a Hydro pneumatic Tank 32 Release air pressure and remove pipe plug on the side of the tank Oil should be visible in the elbow which is the oil fill level Add if necessary See Oil Filling Procedure b Oil Reservoir 27 The oil level should be checked when...

Page 12: ... Valve 41B controls the first stage of Disc closure and the secondary control is the Internal Cushion Needle Valve which controls the remaining 20 of the Buffer stroke Start up Procedure CSD 800 TMD Valves See Figure 2 for part identification 1 With the valve disc completely closed and both the hydro pneumatic tank and oil reservoir in a vertical position check oil levels Fill both tanks to the st...

Page 13: ...run as a basis make necessary adjustments on the Flow Control Valves to suit the installation Over control of the opening cycle of the Slanting Disc Check Valve can damage the connecting rod 55 Therefore the Flow Control Valve 64 step 3a controlling the opening cycle must never be closed less than two full turns open 8 Tighten set screw or lock nut under both Flow Control Valve knobs when final se...

Page 14: ...irection the oil moves the Ball Check 3 off it seat opening the passage for more oil to act against the Piston thus speeding its start up movement as the Cushion Plunger 1 is immediately forced out of its cavity 2 Figure 4 Cushion IN Stroke Figure 5 Cushion OUT Stroke Oil Filling Procedure CSD 800 BMB Valves See Figure 1 1 Hydro pneumatic tank 32 a Shut down pump b Release air pressure of hydro pn...

Page 15: ...ted on the side of the tank and also either the Pressure Gauge or Air Valve c Fully open Flow Control Valve and slowly fill cylinder with SAE 20 oil or equivalent until it spills out of the side port This is the oil fill level d Replace both fittings and pressurize tank as shown in Start up Procedure e Set flow control valve three turns counterclockwise from fully closed position 2 Oil Reservoir 7...

Page 16: ...Hole Gasket 5 Inspection Hole Bolts 6 Diagonal Flange Seal 7 Diagonal Flange Bolts 8 Seat Ring 10 Disc 11 Disc Ring 12 Disc Ring Screws 13 Pivot Pin 14 Pivot Pin Bushing 15 Pivot Pin Gasket 16 Pivot Pin Cover 17 Pivot Pin Cover Bolts 18 Grease Fitting 19 Seat Ring Seal 20 Disc Ring Gasket 21 Locating Pin 22 Indicator Assembly Figure 6 CSD 800 Slanting Disc Check Valve ...

Page 17: ...lly open valve to remove object Seat ring and or disc ring are worn or damaged Replace seat ring and or disc ring Valve leaks at flange joint Loose flange bolting Tighten flange bolting Blown flange gasket Replace flange gasket Misalignment or damage to field piping and supports Adjust misalignment or repair piping or supports Damaged flange face s or improper flange connections Repair flange repl...

Page 18: ...antee shall be null and void if after shipment from our factory the item is modified in any way or a component of another manufacturer such as but not limited to an actuator is attached to the item by anyone other than DeZURIK Inc Factory Service personnel All orders accepted shall be deemed accepted subject to this limited warranty which shall be exclusive of any other or previous Warranty and th...

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