DeZurik APCO SRG-6500 Instruction Manual
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DeZurik APCO SRG-6500 Instruction Manual

Surge relief globe valves
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APCO SRG-6500 SURGE
RELIEF GLOBE VALVES
D12020
Instruction
December 2012

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Summary of Contents for DeZurik APCO SRG-6500

  • Page 1 APCO SRG-6500 SURGE RELIEF GLOBE VALVES D12020 Instruction December 2012...
  • Page 2 Safety label(s) on the product indicate hazards that can cause injury or death. If a safety label becomes difficult to see or read, or if a label has been removed, please contact DeZURIK for replacement label(s). Personnel involved in the installation or maintenance of valves should be constantly alert to potential emission of pipeline material and take appropriate safety precautions.

  • Page 3: Table Of Contents

    DeZURIK APCO SRG-6500 Surge Relief Globe Valves Table of Contents Description - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...

  • Page 4: Description

    DeZURIK APCO SRG-6500 Surge Relief Globe Valves Description The Surge Relief Globe valve consists of a Body, Disc, Seat, Counterweights and a Cushion Cylinder. Surge pressure above that for which the valve was set, will open the disc, causing the counterweight arm and cylinder piston to rise to the up position.

  • Page 5: Fusion/Powder Coated Valves

    DeZURIK APCO SRG-6500 Surge Relief Globe 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: Assembly

    DeZURIK APCO SRG-6500 Surge Relief Globe Valves Maintenance (Continued) Assembly 1. If valve is removed from pipeline, set body standing on its inlet flange. 2. Install body seat seal (43) groove of body seat ring (5). 3. Install body seat ring (5) evenly inside the counterbore of the body (1) until it bottoms out.

  • Page 7: Disc Seat Replacement

    DeZURIK APCO SRG-6500 Surge Relief Globe Valves Maintenance (Continued) Disc Seat Replacement 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 8: Oil Filling Procedure

    DeZURIK APCO SRG-6500 Surge Relief Globe Valves Oil Filling Procedure Recommended Oil: Motor oil SAE 20, “Mobil” DTE 24, “Castrol” Hyspin AW 32 1. With Surge Relief Valve in closed position, open flow control valve. 2. Remove pipe plug located on the side of the oil reservoir.

  • Page 9: Drawings

    Cover Pipe Plug Body Seat Seal Counter Weight Arm Assembly Pivot Sleeve Bearing Lever Arm Bolt Lever Arm Bolt Nut Disc Arm Sleeve Oil Reservoir Flow Control Valve Figure 4: APCO SRG-6500 Surge Relief Globe Valve December 2012 Page 9 D12020...

  • Page 10: Troubleshooting

    DeZURIK APCO SRG-6500 Surge Relief Globe 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 11 If you use metric fasteners with ASME Class 150/300 bolt holes and flange bolt patterns, you do so at your sole risk and any liability associated with such use shall not be the responsibility of DeZURIK, Inc. In addition to the foregoing, DeZURIK’s Manufacturer’s Conditions apply.

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