Dembla GTV-01 Series Instruction Manual
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Dembla GTV-01 Series Instruction Manual

Gate valve
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Instruction Manual
Gate Valve
Series GTV-01

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Summary of Contents for Dembla GTV-01 Series

  • Page 1 Instruction Manual Gate Valve Series GTV-01...

  • Page 2: Table Of Contents

    CONTENTS PAGE NO. 1.0 Introduction 2.0 Storage&Transportation 2.1 Protection 2.2 Storage 2.3 Transportation 3.0 Installation to the pipeline 3.1 Witness Viewing 3.2 Fitness of flange and pipeline 3.3 Installation 4.0 Opearation Maintenance 5.1 Daily Maintenance 5.2 Possible Fault&Solution 5.3 Replacement of wedge 5.4 Replacement of Gasket 5.5 Replacement of Stem O ring Seal 5.6 Replacement of Gland O ring...

  • Page 3: Introduction

    Instruction for use Thanks for selecting our product. With correct use, it will give long and reliable service. This manual has been prepared to assist you install, operate and maintain the valve to the maximum efficiency. For easy of reference, it has been divided into sections covering all aspects of use, and it is the users best interests to read it and ensure that it is fully understood.

  • Page 4: Storage&Transportation

    2. Storage&Transportation 2.1 Protection Delivery of valve should be strictly under"engineering instruction" protection requirements, to ensure that the flange surface, disc sealing ring from harm. 2.2 Storage If the valves need to be stored before installation for some time, they should be kept in the wooden (wicker) boxes of the original delivery, off the ground in a dry and clean indoor area.

  • Page 5: Installation

    Bolt list: Bolts Quantity Bolts Quantity 1000 1200 3.3 Installation Importance Notice. ■ Must clear up the trash in the pipeline before installation. ■ Take off the protection materials from the valves. ■ Avoid to put valve in the middle of two flanges, then weld the flanges ( for those connection with carbon steel pipe ), which would burn the rubber and cause leakage.

  • Page 6: Opearation

    3.3. 2 Extension stem disassembly 3.3.2.1 Remove the bolts between gearbox and top flange of the protection tube. 3.3.2.2 Remove the gearbox. 3.3.2.3 Remove the bolts between flange of the protection tube and valve top flange 3.3.2.4 Remove the protection tube. 3.3.2.5 Remove the extension stem and key (If have).

  • Page 7: Maintenance

    5. Maintenance Our valve only need the minimum maintenance and no lubrication is required. Warning! ■ Before open the valve bonnet-relief pressure first and drain the water and pressure by un-fasten flange bolts. Any maintenance to the valve must be under condition that the valve inside is fully pressure reliefing to avoid any damage to the worker.

  • Page 8: Replacement Of Gasket

    5.3.8 Tighten the hex bolt on the bonnet. 5.3.9 The hot cover on the hex bolt is suggested, but not necessary. 5.4 Replacement of Gasket 5.4.1 Isolate valve and ensure there is no pressure in the pipeline 5.4.2 Counter clockwise stem to put the wedge into slightly open position. 5.4.3 Remove hot melt cover to expose the hex bolt.
  • Page 9 Dembla Works: Sales Office: M/S. Dembla Valves Ltd. M/S. Dembla Valves Ltd. C-30, Jai Matadi Compound, Kalher A/8, Arahm Logistic, Valshind Village, Village,Thane-Bhiwandi-Agra Raod - Mumbai -Nashik Highway 421302, (NH3),Bhiwandi Maharashtra,India. Thane - 421302. Maharashtra (India) Tel - +91-9292234790 - 97 E-mail - expo@dembla.com...

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