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Jafar 4499 Operation And Maintenance Manual

Return butterfly valves double eccentric
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Operation and Maintenance Manual
RETURN BUTTERFLY VALVES
DOUBLE ECCENTRIC
Cat. no.
4499
Approved for use by
JAFAR S.A. Factory President
Failure to comply with the guidelines and instructions in this Operation and
Maintenance Manual exempts the manufacturer from all obligations, liabilities and
guarantees.
Due to the continuous development of our business, we reserve the right to introduce
modifications and structural changes to the product presented herein.
OPERATION AND MAINTENANCE MANUAL
01-2016

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Summary of Contents for Jafar 4499

  • Page 1 DOUBLE ECCENTRIC Cat. no. 4499 Approved for use by JAFAR S.A. Factory President Failure to comply with the guidelines and instructions in this Operation and Maintenance Manual exempts the manufacturer from all obligations, liabilities and guarantees. Due to the continuous development of our business, we reserve the right to introduce modifications and structural changes to the product presented herein.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS 1 TECHNICAL DESCRIPTION ..........................3 1.1 PRODUCT NAME AND FEATURES ......................3 1.2 INTENDED USE ............................3 1.3 TECHNICAL SPECIFICATION ........................3 2 DESIGN ................................6 2.1 FITTING DESIGN DESCRIPTION ......................6 2.2 MATERIALS ..............................6 2.3 DIMENSIONS .............................. 7 2.4 STANDARDISATION ..........................

  • Page 3: Technical Description

    1.2 INTENDED USE Butterfly valves with cat. no. 4499 are intended for piping systems and industrial installations. They can be operated both in underground and overground installations as mounted in vertical or horizontal pipelines. Return butterfly valves can be manufactured in different material versions and used in water networks, technological installations, petrochemical industry, municipal management (sewage treatment plants) and water treatment stations.
  • Page 4 Minimum opening pressure 0.03 MPa. Marking example: return butterfly valve 4499 DN300 for installation II, for operation within the scope of low pressures, return butterfly valve of cat. no. 4499 DN300-II-L-N. Operation requirements: Avoid the installation of butterfly valves near bends, T-pieces and curvatures.
  • Page 5 . Configuration of installation DN250-800, dimensions and weight acc. to Fig. 2 and table 3. Fig. 3 Flow direction For DN 250, 800 – α=75°, for DN 300-600 – α= 78° Tab. 3 Outer dimensions Weight of the butterfly valve with its counterweight Dnom 4499 4499-3 4499 4499-3 4499 4499-3 38.4 36.5 38.9 40.5...

  • Page 6: Design

    2 DESIGN 2.1 FITTING DESIGN DESCRIPTION Manufacture and acceptance. Butterfly valves are manufactured and accepted in accordance with PN-EN12266-1:2003 and PN- EN583. Butterfly valves are tried with water for the casing and closing tightness, as well as with air for gas media.

  • Page 7: Dimensions

    2.3 DIMENSIONS Weight [mm] [bar] [mm] [pcs.] [kg] 23/28 33.6 23/28 23/28 57.5 28/31 84.7 10 / 16 28/34 31/37 31/37 1025 34/41 Flow direction 2.4 STANDARDISATION PN-EN 1074-1: 2002 Pipeline fittings. Functional requirements and verification tests. General requirements. PN-EN 1074-2: 2002 Pipeline fittings.

  • Page 8: Ordering Regulations

    Additionally, the assembly position should be specified for butterfly valves acc. to the catalogue card or O&MM. 2.6 MANUFACTURE AND ACCEPTANCE Butterfly valves of catalogue number 4499 are manufactured and accepted acc. to PN-EN 1074-2:2002 (Pipeline fittings. Functional requirements and verification tests. Check valves) and PN-EN 12266-1:2007 (Industrial fittings.

  • Page 9: Protection, Storage & Transport

    - product type 3 PROTECTION, STORAGE & TRANSPORT 3.1 PROTECTIVE COATINGS All internal and external cast iron surfaces are secured with epoxy paint applied electrostatically. The paint is approved for contact with food products. The anti-corrosion coat layer thickness is min. 250 µm. The casting surface is pre-treated for epoxy coating in accordance with the relevant technical documentation and PN-EN ISO 12944-5:2009.

  • Page 10: Assembly And Installation

    4. ASSEMBLY AND INSTALLATION Due to irregularities of the velocity and pressure observed near the curvature or T-piece, it is recommended, as long as conditions at the designed device allow it, that the distance of the bend or T-piece, located upstream or downstream the butterfly valve, to the rabbet surface be no less than 5 times Dnom. Generally, it is recommended avoiding butterfly valves near bends, T-pieces and curvatures at large.

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