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Related Manuals for Dembla 7500 Series
Summary of Contents for Dembla 7500 Series
- Page 1 Instruction Manual Manual Butterfly Valves Series 7500 2 G/D T 3/4/5/6 0062...
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Page 2: Table Of Contents
CONTENTS PAGE NO. Foreword Introduction Scope of Instruction Manual Copyrights and Modification Rights Reservation Storage & Preservation Valve Marking 3 Health & Safety Unpacking Lifting Details Installation of Butterfly Valve Pre-Installation Checks Operation Lubrication Maintenance Replacing Gland Packing V-PTFE Packing Double V-PTFE Packing Grafoil Packing Double Grafoil Packing... -
Page 3: Foreword
1.0 Foreword 1.1 Introduction Dembla's High Performance Butterfly Valves are available in Wafer and Lug type designs conforming to API 609 standard. The Disc construction is Double Offset. Shafts are guided by bearings. Various seat options are available. 1.2 Scope of Instruction Manual This Instruction Manual covers information regarding Installation and Maintenance of Dembla's double offset High Performance Butterfly Valves, Series 7500, Valve sizes 3”... -
Page 4: Valve Marking
3.0 Valve Marking Valve name plate attached on Valve by riveting carrying all Valve Identification Information. Markings like Valve Size, Rating, Material etc. are as cast on Valve Bodies. Valve serial no. punched on Valve Body Flange for Valve Traceability. If the product is not CE marked, Then name plate also without CE mark. -
Page 5: Health & Safety
Valve operator. Valve must be protected from earthquake loading, traffic & wind. No Modification / Conversions are allowed without written authorization from Dembla Valves Ltd. Warning Rise in temperature on surface of Valve Body depend on working media. End user must be... -
Page 6: Unpacking
5.0 Unpacking For Carton · Keep Carton in position (Carton ‘up side’ should not be ‘down’). · Cut plastic strip properly which is tied around Carton & remove it. (White in colour). · Cut cello tape properly which is stuck on Carton opening. ·... - Page 7 · Valve should be used by End-user with same pressure & temperature rating which was given in Valve Marking (Name Plate) If there is any change please contact Dembla Sales Office. · Avoid personal injury or property damage caused by components dropping .With the Valve or actuator upside, components may drop during disassembly or assembly.
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Page 8: Installation Of Butterfly Valve
7.0 Installation of Butterfly Valve 7.1 Pre-Installation Checks: (Before installing any Butterfly Valve) Inspect it for any shipment damage and for foreign material that might have collected during Packing and shipment. Blow out all pipelines to remove pipe scale-chips, welding-slag, and other foreign materials. Install the Valve using accepted piping practices. -
Page 9: Torque For Studs
Dembla does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any Dembla product remains solely with the purchaser and end-user. - Page 10 Procedure for Disassembly & Assembly Disc Seat Ring ( Soft Seat & Metal Seat) Series :- 7500 DISASSEMBLY PROCEDURE 1. Clamp Valve Properly. 2. Rotate disc 90 3. Mark on disc retainer and disc of the maintaining the proper position. 4.
- Page 11 Procedure for Disassembly & Assembly Disc Seat Ring ( Soft Seat & Metal Seat) Series :- 7500 ASSEMBLY PROCEDURE 1. Insert guide bush on the valve body 2 Nos. as show in Fig.1 (if removed). 2. Place the thrust washer on valve shaft from bottom side &...
- Page 12 Dembla does not assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use and maintenance of any Dembla product remains solely with the purchaser and end-user. Note- Valve Disposal Detail - After the complete use of valve . Dispose the valve with accessaries as per your local law.
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