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Demco Gate Valves_Model DM.pdf

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Demco Gate Valves_Model DM

Publication TC1641 DEMCO? Model DM Gate Valve Installation, Operation , Maintenance Repair Manual Page 1 of 24 DEMCO? Model DM Gate Valves Classes : 400 1000 600 2000 900 3000 1500 5000 Installation, Operation, Maintenance and Repair Manual Publication TC1641 DEMCO? Model DM Gate Valve Installation, Operation , Maintenance Repair Manual Page 2 of 24 Publication TC1641 Published May 2002 ? Cooper Cameron Corporation, Cooper Cameron Valves Division, 2002. All rights reserved. Publication TC1641 DEMCO? Model DM Gate Valve Installation, Operation , Maintenance Repair Manual Page 3 of 24 Table of Contents Bill of Materials Class 400-1500 (except 4 and 6x4 1500) .. 4 Class 2000, 3000, 5000 2 2-1/2x2 5 Class 2000-3000: 2-1/2 - 5x4; 5000: 3 4x3; Class 1500: 4; 1000: 5 6 Class 5000: 4, 5x4, 6x4 7 Class 3000-5000: 5, 6x5 8 Nameplate Information 9 Scope 9 Storage 9 Installation 10 Operation 11 Routine Maintenance 11 Repair - General 11 Repair Class 400-1500 (except 4 and 6x4 1500) . 12 Class 2000, 3000, 5000 2 2-1/2x2 14 Class 2000-3000: 2-1/2 - 5x4; 5000: 3 4x3; Class 1500: 4; 1000: 5 16 Class 5000: 4, 5x4, 6x4 18 Class 3000-5000: 5, 6x5 20 Trouble Shooting 22 Publication TC1641 DEMCO? Model DM Gate Valve Installation, Operation , Maintenance Repair Manual Page 4 of 24 ITEM QTY DESCRIPTION 1. 1 Handle 2. 1 Stem Pin 3. 1 Lube Fitting 4. 1 Back-up Ring 5. 1 Stem Seal 6. 1 Stem 7. 1 Bonnet 8. 4 Cap Screw or Stud 9. * Nut 10. 1 Bonnet Seal 11. 1 Body 12. 1 Seat Assembly 13. 1 Gate 14. * Screw Seal 15. * Relief Fitting Figure 1 - Series DM Gate Valve Class 400-1500 (except 4 and 6x4 1500) 1 2 3 1 2 3 Nut Qty= 0 for 1-1/2 through 3x2 Class 400 and 600 4 for others Screw Seal Qty= 0 for Class 400 and 600 1 for Class 900 and 1500 Relief Fitting Qty= 0 for Class 400 and 600 1 for Class 900 and 1500 11 8 10 12 13 6 7 9 14 5 4 2 15 3 1 Publication TC1641 DEMCO? Model DM Gate Valve Installation, Operation , Maintenance Repair Manual Page 5 of 24 ITEM QTY DESCRIPT