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Forbes Marshall eVALV Installation And Maintenance Manual

Two-port control valves
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Installation and Maintenance Manual
eVALV
TWO-PORT CONTROL VALVES

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Summary of Contents for Forbes Marshall eVALV

  • Page 1 Installation and Maintenance Manual eVALV TWO-PORT CONTROL VALVES...

  • Page 2: Table Of Contents

    Warranty Period..............28 PLEASE NOTE - Throughout this manual this cautionary symbol is used to describe a potential damage or injury that might occur if the safety considerations are overlooked. This symbol denotes CAUTION, WARNING or DANGER. eVALV Two-port Control Valve...

  • Page 3: Preface

    Ensure safe access and if necessary a safe working platform (suitably guarded) before attempting to work on the product. Arrange suitable lifting gear if required.. 2.3 Lighting: Ensure adequate lighting, particularly where detailed or intricate work is required. eVALV Two-port Control Valve...

  • Page 4: Ptfe Seals

    2.8 Tools and consumables: Before starting work ensure that you have suitable tools and / or consumables available. Use only genuine Forbes Marshall replacement parts. 2.9 Protective clothing: Consider whether you and / or others in the vicinity require any protective clothing to protect against the hazards of, for example, chemicals, high / low temperature, radiation, noise, falling...
  • Page 5 PTFE: Can only be disposed of by approved methods, not incineration. Keep PTFE waste in a separate container, do not mix it with other rubbish, and consign it to a landfill site. eVALV Two-port Control Valve...

  • Page 6: General Product Information

    General Product Information : eVALV is a range of two-port single seat globe valves with cage-retained seats. These valves are available as follows: DN15 to DN100 (½" to 4") with body material SG iron with class150 and WCB with class 300...

  • Page 7: Working Principal

    (Normally close or normally open) As actuator stem is coupled with valve stem, it gives actuation to the valve stem also. Valve opens and opens and closes as per the current response to positioner from controller. eVALV Two-port Control Valve...

  • Page 8: Installation And Commissioning

    5.7 Isolate connecting pipework. Ensure it is clean from dirt, scale etc. Any debris entering the valve may damage the head seal preventing the specified shut off. 5.8 Open isolation valves slowly, until normal operating conditions are achieved. eVALV Two-port Control Valve...

  • Page 9: Maintenance Guidelines Dn15 - Dn100

    Recommended tightening torques for Body Bonnet Joint Hex Bolts (Reference Figure 4) Table 3 –Size wise tightening torques eVALV Size Torque (Nm) Torque (Nm) for #150 for #300 DN15 - DN25 DN40 - DN50 DN80 DN100 eVALV Two-port Control Valve...
  • Page 10 Then apply air pressure to actuator, dismantle coupling halves then remove slotted nut from valve bonnet. Undo and remove the bonnet bolts (19). Remove the bonnet (2) and plug and stem assembly (5). Remove and discard the body gasket (9). eVALV Two-port Control Valve...
  • Page 11 Prior and after insertion of spring (17) in the bore put washers (18) Apply a thin layer of anti-seize lubricant to the gland nut threads before screwing it in two or three turns. At this stage the packing must not be significantly compressed. eVALV Two-port Control Valve...
  • Page 12 Apply recommended grease to all spindle OD (4), Gland Bush ID(6), spacer ID (9) before assembly Apply a thin layer of anti-seize lubricant to the gland nut threads before screwing it in two or three turns. At this stage the packing must not be fully compressed. eVALV Two-port Control Valve...
  • Page 13 Clean all components, including the seat recess in the valve body. Examine the seat and plug / stem assembly for damage or deterioration and renew as necessary. While putting seat at the recess ensure that stepped part having serrations should go downward eVALV Two-port Control Valve...
  • Page 14 Ensure that gasket touching surfaces should be serrated. Refit the cage (3) ensuring that the low thickness edge is lower most and that it sits squarely on the seat without impinging on the valve body. Fig. 8 eVALV Two-port Control Valve...

  • Page 15: Spares Parts (Valve)

    Always order spares by using the description given in the column headed 'Available spares', and state the size and type of valve including the full product description of the product. Example: Actuator clamping nut A for Forbes Marshall Control Valve 050EVALV- Q1EGS412MI6-HWNSNN two port control valve.
  • Page 16 Class150 Spares Class300 Spares eVALV Two-port Control Valve...

  • Page 17: Installation Of Actuator

    Warning: To prevent damage to the valve seat, please ensure the plug does not turn while pressing on the seat during assembling or adjustment. To prevent damage to the diaphragm, ensure the actuator spindle is not allowed to rotate when the diaphragm is assembled within its housing. eVALV Two-port Control Valve...

  • Page 18: Maintenance Of Actuator

    Lubricate the threads of the three long Allen screws (20) with a PTFE based grease before releasing the tension in the springs. Loosen and remove the short housing Allen screws and nuts (22) eVALV Two-port Control Valve...
  • Page 19 Remove the actuator from the valve as described in Section above 9.1 Lubricate the threads of the three long Allen screws with a PTFE based grease before releasing the tension in the springs Loosen and remove the short housing Allen screws and nuts (23) eVALV Two-port Control Valve...
  • Page 20 Refit the new WDB seal holder (9) dully fitted with new WDB seal (8) , DU bearing (11) & O-ring (10) Note- To change the WDB seal holder, no need to open Actuator Housing Normally Open Valve eVALV Two-port Control Valve...
  • Page 21 (7) so that the diaphragm sits evenly in the lower housing (18), refit the upper housing (14) and securing nuts and screws (22 & 20) Note – refer the Note of Section 9.2 (A) eVALV Two-port Control Valve...
  • Page 22 (Note- all 4 should be holding together by hand) Insert the hex bolt (3) in the center & tighten it against the spindle threads. Replace the springs in same order as removed but in lower housing this time. eVALV Two-port Control Valve...

  • Page 23: Spare Parts (Actuator)

    2 grub screws. Spare parts (Actuator): eVALV Spare Codes SPARE CODE KIT NAME DESCRIPTION VALVE SPARES,15-25NB EVALV ACTUATOR SPARE-1525EVALV- CLAMP NUT KIT, SPARE CONSISTS OF ACNKIT ACTUATOR CLAMP NUT PACK OF 2 NO'S ACTUATOR VALVE SPARES,40-50NB EVALV ACTUATOR...
  • Page 24 SPARE CODE KIT NAME DESCRIPTION VALVE SPARES,15NB EVALV PLUG SEAT KIT SPARE-15EVALV-PSKIT ,SPARE CONSISTS OF PLUG ,SEAT ,SEAT GASKET & BODY GASKET 1 NO EACH VALVE SPARES,25NB EVALV PLUG SEAT KIT SPARE-25EVALV-PSKIT ,SPARE CONSISTS OF PLUG ,SEAT ,SEAT GASKET & BODY GASKET 1 NO EACH...
  • Page 25 A0 Actuator Spare Codes SPARE CODE KIT NAME DESCRIPTION EVALV A0 ACTUATOR, SPARE TYPE : REPAIR KIT, SPARE CONSIST OF : DIAPHRAGM SPARE-EVALV-A0- ASSEMBLY NC WITH & WITHOUT HANDWHEEL, 20NC1-RKIT ONE SPRING & WDB SEAL HOLDER ASEMBLY [PACK OF 1...
  • Page 26 PMKIT MOUNTING BKT,PNEUMATIC-MALE CONNECTOR (1/4" X 8), MALE ELBOW (1/4'' x 8)(3),TUBEING(0.5M),H BOLT M8(2) [PACK OF 1] EVALV A0 ACTUATOR, SPARE TYPE : STEM KIT, SPARE-EVALV-A0-NC- SPARE CONSIST OF UPPER STEM NC, WDB STKIT SEAL (2 NOS) [PACK OF 1]...
  • Page 27 HOLDER SEAL HOLDER(NC&NO)(2), WDB SEAL(2), DU ASSLY KIT BEARING & O RING (2 NOS) [PACK OF 1] EVALV A1 ACTUATOR, SPARE TYPE : STEM KIT, SPARE-EVALV-A1-NC- SPARE CONSIST OF UPPER STEM NC, STEM STKIT SEAL (2 NOS) [PACK OF 1]...
  • Page 28 SPARE CODE KIT NAME DESCRIPTION EVALV A0 ACTUATOR, SPARE TYPE : SEAL KIT, SPARE CONSIST OF : STEM O RING (2 NOS), O SPARE-EVALV-A1- RING(2 NOS), O RING,ID-29.74MM(2 NOS), SEAL KIT SLKIT STEM SEAL, GASKET(2 NOS), LIP SEAL HOLDER [PACK OF 1]...
  • Page 29 PMKIT MOUNTING BKT,PNEUMATIC-MALE CONNECTOR (1/4" X 8), MALE ELBOW (1/4'' x 8)(3),TUBEING(0.7M),H BOLT M8(2) [PACK OF 1] EVALV A2 ACTUATOR, SPARE TYPE : STEM KIT, SPARE-EVALV-A2-NC- SPARE CONSIST OF UPPER STEM NC, STEM STKIT SEAL (2 NOS) [PACK OF 1]...

  • Page 30: Warranty Period

    SPARE CODE KIT NAME DESCRIPTION EVALV A2 ACTUATOR, SPARE TYPE : SEAL KIT, SPARE-EVALV-A2- SPARE CONSIST OF : STEM O RING (2 NOS), O SEAL KIT SLKIT RING C/S 5MM(2 NOS), LIP SEAL HOLDER [PACK OF 1] EVALV A2 ACTUATOR, SPARE TYPE :...
  • Page 31 Forbes Marshall Pvt. Ltd. Forbes Marshall International Pte. Ltd. 16A, Tuas Avenue 1, Opp. 106th Milestone, CTS 2220, #05-21, JTC Space @Tuas Mumbai-Pune Road, Kasarwadi, Singapore - 639533 Pune MH 411034 INDIA www.forbesmarshall.com P: +65 6219 3890 P: +91(0)20-68138555 F: +91(0)20-68138402 Forbes Marshall Arca E: ccmidc@forbesmarshall.com...

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