SPX APV DELTA DF plus 2 Operating Manual
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SPX APV DELTA DF plus 2 Operating Manual

SPX APV DELTA DF plus 2 Operating Manual

Double seat valve
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Operating Manual
D E L T A
D F p l u s 2
Double Seat Valve
Read and understand this manual prior to
operating or servicing this product.

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Summary of Contents for SPX APV DELTA DF plus 2

  • Page 1 Operating Manual D E L T A D F p l u s 2 Double Seat Valve Read and understand this manual prior to operating or servicing this product.

  • Page 5: Table Of Contents

    DELTA DFplus2 - UK1 / qxd.12.2004 Table of Contents : Page : General Terms Safety Instructions Mode of Operation 3 - 4 Auxiliary Equipment 5 - 6 Cleaning 7 - 8 Installation 6.1 Welding Instructions Dimensions / Weights Technical Data 11 - 12 Materials Maintenance...

  • Page 7: General Terms

    DELTA DFplus2 - UK1 / qxd.12.2004 General Terms This operating manual should be read carefully by the competent operating and maintenance personnel. We point out that we will not accept any liability for damage or malfunctions resulting from the non-compliance with this operating manual.

  • Page 8: Mode Of Operation

    DELTA DFplus2 - UK1 / qxd.12.2004 Mode of Operation Due to its construction and mode of operation as well as to the use of high-quality stainless steel and adequate seal materials, the seat lift double seat valve DFplus2 is suited for the food and beverage actuator industries as well as for pharmaceutical and chemical applications.

  • Page 9: Mode Of Operation

    DELTA DFplus2 - UK1 / qxd.12.2004 Mode of Operation Valve in closed position The upper and lower valve shaft are closed by spring force. The different liquids A and B are safely separated from one another. The leakage chamber which is situated between the two valve shafts, provides for a free and depressurized drain to the bottom.
  • Page 10 DELTA DFplus2 - UK1 / qxd.12.2004 Auxiliary Equipment Seat lift actuator If necessary for reasons of process technology or hygiene, the DFplus2 valve can be equipped with a seat lift actuator. The upper and lower valve seats can be lifted individually by the seat lift actuator.

  • Page 11: Auxiliary Equipment

    DELTA DFplus2 - UK1 / qxd.12.2004 Auxiliary Equipment Control Unit control unit The assembly of a CU3 Control Unit on the DFplus2 valve DELTA CU3 is possible. For the assembly of a control unit on the actuator or seat lift actuator corresponding adapters are required.

  • Page 12: Cleaning

    DELTA DFplus2 - UK1 / qxd.12.2004 Cleaning With the cleaning of the DFplus2 valves it is necessary to distinguish between three areas: The flow area The upper and lower passages are cleaned by the flowing flow chambers cleaning liquid during the cleaning of the connected pipelines. The seal surfaces in the seat area The seat seals (7) and (5) are cleaned through valve actuation and lifting of the individual valve seats during the cleaning of the...

  • Page 13: Cleaning

    DELTA DFplus2 - UK1 / qxd.12.2004 Cleaning Cleaning liquid quantity per CIP spraying cycle: 1,5” - 6” about 5 - 10l/min Cleaning pressure at CIP cleaning connection: min. 3 bar / max. 5 bar The seat lift cycles refer to a cleaning pressure of p = 3 - 5 bar.

  • Page 14: Installation

    DELTA DFplus2 - UK1 / qxd.12.2004 Installation The valve must be installed in vertical position. Fluids are, therefore, freely drainable from the valve housing and from the leakage chamber. Valves can be welded direct into the pipelines (completely dismantable valve insert). Heights of installation and dismantling (see section 7).

  • Page 15: Dimensions / Weights

    DELTA DFplus2 - UK1 / qxd.12.2004 Dimensions / Weights installing dimensions in mm 1,5” 2” 2,5” 3” 4” 6” 1040 weights in kg inch without with seat lift actuator seat lift actuator 1,5” 11,1 2” 12,4 2,5” 14,5 17,2 3” 16,5 19,2 4”...

  • Page 16: Technical Data

    DELTA DFplus2 - UK1 / qxd.12.2004 Technical Data Max. line pressure : 5 bar Max. operating temperature : 135°C EPDM, HNBR *FPM, *VMQ Short-term load : 140°C EPDM, HNBR *FPM, *VMQ * no steam tightening torque of safety nut at upper valve shaft : 40Nm CIP - connection...

  • Page 17: Materials

    DELTA DFplus2 - UK1 / qxd.12.2004 Technische Daten Quantity of operating leakages of DFplus2 valves 3 bar line pressure in upper valve housing fluid: water t = 20 C, figures in litre inch valve open valve closed 1,5” 0,15l 0,35l 2”...

  • Page 18: Maintenance

    DELTA DFplus2 - UK1 / qxd.12.2004 Maintenance The maintenance intervals are different depending on the application and should be determined by the operator carrying out temporary checks. centering arbor Replacement of seals, see service instructions. DFplu2 Use seal kits according to spare parts list. For the installation of the upper and lower seat seal assembly tools are respectively available (see 13).

  • Page 19: Service Instructions

    DELTA DFplus2 - UK1 / qxd.12.2004 Service Instructions The item numbers refer to the spare parts drawings inch: RN 01.053.80-1. 11.1 Dismantling from the line system a. Disconnect pneumatic and electric connections. b. Shut off line pressure in the product and cleaning lines. c.
  • Page 20 DELTA DFplus2 - UK1 / qxd.12.2004 Service Instructions 11.2 Dismantling of seals (service) The item numbers refer to the spare parts drawings inch: RN 01.053.80-1. housing 11.2.1 Dismantling of housing cover (1) a. Remove the housing cover (1) from the housing. 27, 28 b.
  • Page 21 DELTA DFplus2 - UK1 / qxd.12.2004 Service Instructions fig. 1 11.3 Installation of seals and assembly of valve yoke 16 The item numbers refer to the spare parts drawings inch: RN 01.053.80-1 11.3.1 Assembly of valve insert a. Insert the guide bush (20) into the metal guide bush (21). Place the guide bush (21) in the yoke (16) (see fig.
  • Page 22 DELTA DFplus2 - UK1 / qxd.12.2004 Service Instructions fig. 4 k. Insert the lower seat seal (5) into the lower valve shaft (4) according to service instructions (see 13.). Push the lower valve shaft (30) via the guide rod (8) against the valve disk.

  • Page 23: Actuator

    DELTA DFplus2 - UK1 / qxd.12.2004 Service Instructions 11.3.3 Assembly of valve insert in the housing a. Introduce the complete valve insert carefully in the valve housing (1). The centering pin positions the yoke flange. b. Tighten the hex. screws (22) crosswise. c.

  • Page 24: Assembly Tool

    DELTA DFplus2 - UK1 / qxd.12.2004 Assembly Tool The assembly tool consists of: thrust ring ring with venting plug housing threaded bolt thrust ring Installation of seat seal in the valve shaft 1. Insert the valve shaft in the housing in such a manner that the ring seal groove is in the valve housing.

  • Page 25: Detection Of Seal Damage

    DELTA DFplus2 - UK1 / qxd.12.2004 Detection of Seal Damage Failure Remedy V a l v e c l o s e d a n d p r e s s u r e i n u p p e r h o u s i n g Leakage between housing and Replace housing seal (3), shaft seal (23), yoke flange...

  • Page 26: Spare Parts Lists

    DELTA DFplus2 - UK1 / qxd.12.2004 Spare Parts Lists ( see annex ) The reference numbers of the spare parts for the different valve designs and sizes are included in the attached spare parts drawings with corresponding lists. Please indicate the following data to place an order for spare parts: number of required parts reference number...
  • Page 28 Fax: +49(0) 23 03 / 108-210 For more information about our worldwide locations, approvals, certifications, and local representatives, please visit www.apv.com. Copyright © 2008 SPX Corporation The information contained in this document, including any specifications and other product details, are subject to change without notice.

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