Metso VD Series Installation, Maintenance And Operation Instructions
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Metso VD Series Installation, Maintenance And Operation Instructions

Spring diaphragm actuator
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Spring Diaphragm Actuator
Series VD
Installation, Maintenance and
Operating Instructions

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Summary of Contents for Metso VD Series

  • Page 1 Spring Diaphragm Actuator Series VD Installation, Maintenance and Operating Instructions...

  • Page 2: Table Of Contents

    These instructions provide information about safe handling and operation of the actuator. If you require additional assistance, please contact the manufacturer or manufacturer's representative. Addresses and phone numbers are printed on the back cover. See also www.metso.com/valves for the latest documentation. SAVE THESE INSTRUCTIONS! Subject to change without notice.

  • Page 3: General

    The actuator is provided with an identification plate, see Scope of the manual Fig. 2. Identification plate markings are: This manual provides essential information on Metso series Actuator code (model) VD, Pneumatic Linear, Spring Diaphragm Actuators. Valve Manufacturing site, date, serial no.
  • Page 4 6 DA 70 en Table 3. VD Actuators specifications Actuator Effective Area Volume Actuator Stem Size Ø Maximum Stroke Max. Allowable Size Pressure inch inch inch inch VD_25 54.9 24.0 0.95 VD_29 109.8 24.0 0.95 VD_37 213.5 24.0 0.95 VD_48 1130 10.2 622.4...

  • Page 5: Recycling And Disposal

    CAUTION: age to the equipment. Beware of the cutting movement of the valve! Several types of Metso valves can be used with suitable clamps. Refer to the selected valve model manuals for fur- ther information on their installation, maintenance and operation.

  • Page 6: Removing The Actuator From The Valve

    VD Actuator Constructions without Handwheel 3.2.2 Actuator mounting for VDR, The installation position can be selected freely, but Metso recommends installation with the upright. The actuator is Reverse <air to open, stem retract> actuator thus best protected against damage due to supply air See Fig.

  • Page 7: Maintenance

    (25). downtime and in real terms reduce the total cost of owner- CAUTION: ship. Metso recommends inspecting the valves at least every Diaphragm case is under spring tension and is equip- five (5) years. The inspection and maintenance interval...

  • Page 8: Replacement Diaphragm For Vdr, Air To Open

    6 DA 70 en   Mount the spring seats (11) and springs (12). Replace the U-packing (4) and O-ring (5) in the stem guide (2). NOTE: Set the springs so that the coil ends are located toward CAUTION: the actuator stem center, this will be assures best perfor- Checking whether scratched on the stem guide (18) mance of the actuator.
  • Page 9 6 DA 70 en 40F 40W VD, Side handwheel Fig. 6 VD_25/29/37, Actuator Constructions with Handwheel Part No. Description Material HANDLE BASE ASTM A216 gr. WCB 040D HEXAGON SCREW ISO 3506 A2-70 040F SPRING WASHER AISI 304 040R HANDLE BASE COVER JIS G3101-SS400 040S HEXAGON SCREW...
  • Page 10 6 DA 70 en VDD, Top side handwheel VDR, Top side handwheel Fig. 7 VD_ 48/55, Standard parts & materials with handwheel...
  • Page 11 6 DA 70 en Part No. Description Material HAND WHEEL BASE JIS G3101-SS400 040A 0-RING NITRILE, NBR 0408 0-RING NITRILE, NBR 040D HEXAGON SCREW ISO 3506 A2-70 040E WASHER BRONZE 040J HEXAGON SCREW ISO 3506 A2-70 040K WASHER AISI304 040L SPRING WASHER ISO 3506 A2-70 040R...

  • Page 12: Removal & Mounting Of The Handwheel Bundle

    6 DA 70 en  Removal & mounting of the handwheel Repair or replace the parts if necessary. bundle NOTE: We recommend that to replace the bearing (57) with Mob See Fig. 6 and 7. no. 2 grease or equal when the annual shutdown. ...

  • Page 13: Change Of The Spring Range

    6 DA 70 en Change of the spring range 4.6.2 Change of the spring range: VDR, Air to open 4.6.1 Change of the spring range: VDD, Air to close See Fig. 5,6 and Exploded view (Fig. 10) We recommend that all seals be replaced when the actua- See Fig.
  • Page 14 6 DA 70 en  Loose and remove the short hexagon screws (23, 24, 4.7.2 Change of the actuator action: VDR, Air diaphragm case bolts) and the hexagon nuts (25). to open --> VDD, Air to close CAUTION:  See Fig. 5 and Exploded view. Diaphragm case is under spring tension and is equip- ...

  • Page 15: Adjustment For Valve Stem

    6 DA 70 en  Adjustment for valve stem Keep the actuator stem is fully extended.  Unscrew the socket head screws (27) and hexagon 4.8.1 Model VDD, Air to close nut (28) by one turn.  See Fig. 5, 6, 7, 8 and 9. Using the stem lock nut, unscrew the stem until the plug touches the seat.

  • Page 16: Exploded Views And Parts List

    6 DA 70 en EXPLODED VIEWS AND PARTS LIST VDD, Direct Acting, Air to Stem Extended...
  • Page 17 6 DA 70 en VDR, Reverse Acting, Air to Stem Retracted...
  • Page 18 6 DA 70 en Series VD Item Description Recommended spare part YOKE STEM GUIDE 0-RING U-PACKING 0-RING DIAPHRAGM 0-RING HEXAGON SCREW WASHER LOWER CASE SPRING SEAT SPRING DIAPHRAGM PLATE STOPPER STEM ROD PLATE 0-RING TOP STEM UPPER CASE LIFTING EYE NUT WASHER HEXAGON SCREW HEXAGON SCREW...

  • Page 19: Dimensions And Weights

    6 DA 70 en DIMENSIONS AND WEIGHTS VDD/R E VDD/R D Side handwheel(25/29/37) Standard spring High spring Standard spring Dimension Without handwheel With handwheel (mm) Size Weight Weight Bd / Bhd Br / Bhr (mm) (kg) (kg) VD_25 E VD_25 D VD_29 E VD_29 D VD_37 E...
  • Page 20 6 DA 70 en Top side handwheel(VDD48/55) Top side handwheel(VDR48/55) Dimension Without handwheel With handwheel (mm) Size Weight Weight Bd / Bhd Br / Bhr (mm) (kg) (kg) VD_48 E 1102 1072 VD_48 D VD_55 E 1145 1115 VD_55 D Dimension Without handwheel With handwheel...

  • Page 21: Type Code

    80 mm Side Handwheel mounted (applicable 25/29/37 sizes only) Special Contact Metso for special stroke Top-Side Handwheel mounted (applicable 48/55 sizes only) Special mounting side or Special H/W construction - Handwheel is not applicable for 'D' spring option (sign 4).
  • Page 22 6 DA 70 en...
  • Page 23 6 DA 70 en...
  • Page 24 6 DA 70 en Metso Flow Control Inc. South Korea, 235 Cheomdansaneop 1-ro, Daesowon-myeon, Chungju-si, Chungbuk-do, 27466, Korea Tel. +82 43 852 7708, Fax +82 43 841 9890 Europe, Vanha Porvoontie 229, P.O. Box 304, FI-01301 Vantaa, Finland. Tel. +358 20 483 150. Fax +358 20 483 151 North America, 44 Bowditch Drive, P.O.

This manual is also suitable for:

Vd_25Vd_48Vd_55Vd_29Vd_37

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