Jafar 8851, Operation & Maintenance Manual

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OPERATION AND MAINTENANCE MANUAL 01-2016
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Caution! It is prohibited to open this type of hydrant with a closed shutoff gate valve because the poppet
sliding down must be able to push a water column in the direction opposite to the flow direction during the
first phase of its movement.
2.2 MATERIALS TYPE 8851
List of basic materials used for the construction of an underground hydrant TYPE 8851
see table
Item Part name Material Reference standard
1 Main body
Cast-iron, EN-GJS 400-15
EN-GJS500-7
PN-EN1563: 2012
2 Ball chamber
Cast-iron, EN-GJS 400-15
EN-GJS500-7
PN-EN1563: 2012
3 Column
Cast-iron, EN-GJS 400-15
EN-GJS500-7
Steel 1.0254
Stainless steel 1.4301 PN-EN1563: 2012
PN-EN 1,503-3:2003
PN-EN 10088-1:2014
4 Cover
Cast-iron, EN-GJS 400-15
EN-GJS500-7
PN-EN1563: 2012
5 Poppet
Cast-iron, EN-GJS 400-15
EN-GJS500-7
EPDM PN-EN1563:2012
PN-ISO1629:2005
6 Cap
Cast-iron, EN-GJS 400-15
EN-GJS500-7
PN-EN1563: 2012
7 Stem Stainless steel 1.4021 PN-EN 10088-1: 2014
8 Spindle Stainless steel 1.4301 PN-EN 10088-1:2014
9 Tooth socket
Cast-iron, EN-GJS 400-15
EN-GJS500-7
PN-EN1563: 2012
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Gasket
EPDM PN-ISO 1629:2005
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Outlet seal
EPDM PN-ISO 1629:2005
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Deflector
EPDM PN-ISO 1629:2005
13 Stopper Brass PN-EN 1982:2010
14 Stem nut Brass PN-EN 1982:2010
15 O-ring EPDM PN-ISO 1629:2005
16 Bolt
Steel St3S/Zn5
Stainless steel, A2 PN-EN ISO 4017: 2011
PN-EN ISO 4762: 2006
17 Nut
Steel St3S/Zn5
Stainless steel, A4
PN-EN ISO 4032: 2013
18 Drainage Polypropylene PP PN-EN ISO 1873-1:2000
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Seat Brass PN-EN 1982:2010