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Summary of Contents for DeZurik APCO CVS-6000
- Page 1 APCO CVS-6000 SWING CHECK VALVES D12006 Instruction December 2012...
- Page 2 Order parts from your local DeZURIK sales representative, or directly from DeZURIK. When ordering parts please choose from the following: If the valve has a DeZURIK APCO nameplate please include the 7-digit part number and 4-digit revision number (example: 9999999R000) located on the data plate attached to the valve assembly.
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Page 3: Table Of Contents
DeZURIK APCO CVS-6000 Swing Check Valves Table of Contents Description - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -... -
Page 4: Description
Installation • The APCO CVS-6000 Swing Check Valves may be installed in a horizontal or vertical position (with the flow upward). In either case, the Counterweight Arm (44) should be set 25°-30° below the horizontal line. Unless otherwise specified, the valves are shipped for horizontal installation. -
Page 5: Fusion/Powder Coated Valves
DeZURIK APCO CVS-6000 Swing Check Valves Fusion/Powder Coated Valves Valves with fusion/powder coated exterior paint require flat washers to be installed under the flange nuts when installing the valve to the pipeline flange to prevent the paint from cracking or chipping. -
Page 6: Disassembly
DeZURIK APCO CVS-6000 Swing Check Valves Disassembly These valves may open or close, swinging the counterweight/spring loaded arm without warning due to flow changes from pumps starting and stopping. Servicing or working around these valves while the pipeline is under pressure can cause personal injury or equipment damage. -
Page 7: Disc Seat Replacement
DeZURIK APCO CVS-6000 Swing Check Valves Maintenance (Continued) 5. Set disc (10) with seat side up, install disc seat (6) and disc seat retaining ring (31) and fasten with disc seat retaining screws (32). 6. Connect disc arm (9) assembly to disc (10) by inserting disc pins (8) and secure with disc pin retaining rings (41). -
Page 8: Operation
DeZURIK APCO CVS-6000 Swing Check Valves Operation The flow from the pump opens the Disc (10) and raises the Counterweight Arm (44). When the pump is shut off, backflow pressure pushes the Disc (10) to close against the Body Seat Ring (5). As the disc is closing, the cushion cylinder is pushed downward controlling the closing speed of the valve and can be adjusted to suit the best performance for the installation. -
Page 9: Start-Up Procedure (Series 6000B Valves)
DeZURIK APCO CVS-6000 Swing Check Valves Start-up Procedure (CVS-6000 Valves) (Continued) Speed Control Adjustment • Increase cushioning - Turn adjusting screw of Needle Valve clockwise. • Decrease cushioning - Turn adjusting screw of Needle Valve counterclockwise • Faster Disc closing - Move Counterweight away from the pivot shaft. -
Page 10: Start-Up Procedure (Series 6100 Valves)
DeZURIK APCO CVS-6000 Swing Check Valves Start-up Procedure (CVS-6000B Valves) (Continued) 6. Start pump. While valve is opening, visually verify that Buffer Rod (84) fully extends into the valve body. If not, pressurize Hydro-pneumatic tank until it does. Table A shows the maximum stroke length of the Buffer Rod. -
Page 11: Adjustment Of Flow Control Valve
DeZURIK APCO CVS-6000 Swing Check Valves Adjustment of Flow Control Valve The Flow Control Valve has a micrometer type adjustment which incorporates a color coded reference scale to simplify setting, resetting and adjusting. A set screw on the knob is provided for locking the valve setting. Turning the knob clockwise closes the valve and turning counterclockwise opens the valve and increases rate of closure of the Check Valve. -
Page 12: Timing Valve Adjustment (Series 6100 Valves)
DeZURIK APCO CVS-6000 Swing Check Valves Timing Valve Adjustment (Series 6100 Valves) The Timing Valve is an extremely reliable and convenient means to automatically open or close the oil passage. The built-in roller is activated by the Timing Valve Cam, causing a resultant movement of the Timing Valve stem to open or close the oil passage. -
Page 13: Oil Filling Procedure
DeZURIK APCO CVS-6000 Swing Check Valves Oil Filling Procedure See Figure 6 for part identification. Recommended Oils: Motor oil SAE 20, Mobil DTE 24, Castrol Hyspin AW 32. Series 6000B Valves Step 1: Hydro-pneumatic tank (32) 1. Shut down pump. -
Page 14: Series 6100 Valves
DeZURIK APCO CVS-6000 Swing Check Valves Figure 6 – Bottom Buffer CVS-6100 Valves 1. Fully close swing check valve. 2. Fully open Flow Control Valve (30). (Make note of setting before turning knob.) 3. Manually lift roller of Timing Valve (45) and hold in that position until step 5. -
Page 15: Drawings
DeZURIK APCO CVS-6000 Swing Check Valves Drawings Description Body Cover Cover Gasket Cover Screw Body Seat Ring Disc Seat Disc Stop Disc Pin Disc Arm Disc Straight Bushing Flanged Bushing Pivot Shaft Disc Arm Setscrew Pivot Shaft Cover Pivot Shaft Cover Screw... - Page 16 DeZURIK APCO CVS-6000 Swing Check Valves Drawings (Continued) Description Body Cover Cover Gasket Cover Screw Body Seat Ring Disc Seat Disc Stop Disc Pin Disc Arm Disc Straight Bushing Flanged Bushing Pivot Shaft Disc Arm Setscrew Pivot Shaft Cover Pivot Shaft Cover Screw...
- Page 17 DeZURIK APCO CVS-6000 Swing Check Valves Drawings (Continued) Description Body Cover Cover Gasket Cover Screw Body Seat Ring Disc Seat Disc Stop Disc Pin Disc Arm Disc Straight Bushing Flanged Bushing Pivot Shaft Disc Arm Setscrew Pivot Shaft Cover Pivot Shaft Cover Screw...
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Page 18: Troubleshooting
DeZURIK APCO CVS-6000 Swing Check Valves Troubleshooting Condition Possible Cause Corrective Action Shaft seal leaks. Seal is worn. Replace seal. Foreign matter caught between Fully open valve to remove Valve leaks excessively from disc and seat. object. one side of the disc to the other. - Page 19 No claim for transportation, labor or special or consequential damages or any other loss, cost or damage shall be allowed. You shall be solely responsible for determining suitability for use and in no event shall DeZURIK, Inc. be liable in this respect.
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