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Jafar 2904 Operation And Maintenance Manual

One-way knife gate valves with drive actuator
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Approved for use by
Failure to comply with the guidelines and instructions in this Operation and
Maintenance Manual releases the manufacturer from all obligations, liability and guarantee.
Due to continuous business development, we reserve the right to introduce
modifications and structural changes to the presented product.
Operation and maintenance
manual for
ONE-WAY
KNIFE
GATE VALVES
WITH DRIVE ACTUATOR
P/N
2904
President of Factory, JAFAR S.A.
OPERATION AND MAINTENANCE MANUAL
03-2016

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Summary of Contents for Jafar 2904

  • Page 1 WITH DRIVE ACTUATOR 2904 Approved for use by President of Factory, JAFAR S.A. Failure to comply with the guidelines and instructions in this Operation and Maintenance Manual releases the manufacturer from all obligations, liability and guarantee. Due to continuous business development, we reserve the right to introduce modifications and structural changes to the presented product.

  • Page 2: Table Of Contents

    CONTENTS 1 TECHNICAL DESCRIPTION ........................... 3 1.1 PRODUCT DESIGNATION AND IDENTIFICATION ................. 3 1.2 USE ................................3 1.3 TECHNICAL SPECIFICATION ......................3 2 DESIGN ................................3 2.1 DESCRIPTION OF THE VALVE DESIGN .................... 3 2.2 MATERIALS .............................. 4 2.3 DIMENSIONS ............................. 5 2.4 REFERENCE STANDARDS ........................

  • Page 3: Technical Description

    (non-flooded sewers) and overground installations as installed in vertical or horizontal pipelines. 1.3 TECHNICAL SPECIFICATION The Type 2904 flange-to-flange knife gate valves are intended for transfer of potable water, process water and sewage, as well as other liquids as approved by the manufacturer. - Temperature: 0°C to +70°C...

  • Page 4: Materials

    (see the bolt table). Table 4 shows the bolt sizing for flange ends (PN10 bolt hole layout). 2.2 MATERIALS Table 1 lists the structural materials of the Type 2904 flange-to-flange knife gate valves. Item Part designation...

  • Page 5: Dimensions

    2.3 DIMENSIONS Table 2 Thread type No. of turns Mass drive type Flange [mm] [bar] [mm] [mm] [kg] 19x4 SA 07.2 (F7) Tr 20x4 LH 19x8 F7 / F10 SA 07.6 23x8 (F7 / F10) Tr 25x5 LH 23x12 1118 SA 10.2 23x16 1282...

  • Page 6: Reference Standards

    2.4 REFERENCE STANDARDS PN-EN 1074-1: 2002 Valves for water supply. Fitness for purpose requirements and appropriate verification tests. General requirements PN-EN 1074-2: 2002 Valves for water supply. Fitness for purpose requirements and appropriate verification tests. Isolating valves. PN-89/H-02650 Valves and pipelines. Pressure and temperature ratings. PN-EN 1092-2: 1999 Flanges and their joints.

  • Page 7: Production And Acceptance

    PN-EN ISO 12944-5: 2009. The stem to body and to nut mount fastening bolts are made of stainless steel (A2). 3.2 PACKAGING The Type 2904 knife gate valves are packed on EURO pallets (1200x800) and protected with heat-shrunk film. 3.3 STORAGE Store the Type 2904 knife gate valves in sheltered rooms.

  • Page 8: Transport

    4 ASSEMBLY AND INSTALLATION 4.1 ASSEMBLY GUIDELINES The Type 2904 flange-to-flange knife gate valves can be installed in underground or overground pipelines both in horizontal or vertical orientation. The knife gate valves are designed for mounting between flange ends of the pipelines sized for the PN10 bolt hole layout acc.

  • Page 9: Assembly Instructions

    Bolt tightening torque Bolt thread Bolt strength class size 10.9 [Nm] 1000 1050 1480 1200 1430 2010 1630 1940 2700 2100 2490 3500 2720 3220 4550 Table of maximum tightening torques for individual bolts for tightening the knife gate valve gland. 4.2 ASSEMBLY INSTRUCTIONS Before attempting to install the valve, check the technical and commercial documents delivered with the product to verify that the media and pipeline operating parameters comply with the manufacturer's declaration.
  • Page 10 Permitted Not permitted 1. - Knife gate; 2. - Pipeline flange end; 3. - Assembly bolt; 4. - Seal; 5. - Nut; 6. - Washer Use of bolts for the knife gate valve P/N 2904. OPERATION AND MAINTENANCE MANUAL 03-2016...

  • Page 11: Operation

    4.3 OPERATION The type 2904 knife gate valve shall be operated according to all relevant requirements for cut-off valves, i.e. either in fully open or fully closed positions. Leaving the gate valve partially opened (or closed) may result in seal failure.

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