OPERATION AND MAINTENANCE MANUAL
01-2016
4
2.2 MATERIALS
List of materials used in the inspection couplings:
Item
Part name
Material
Reference standard
1
Body
EN-GJL-250
EN-GJS-400-15
PN-EN1561: 2012
PN-EN1563: 2012
2
Cover
EN-GJL-250
EN-GJS-400-15
PN-EN1561: 2012
PN-EN1563: 2012
3
Cleanout opening
CuZn39Pb1Al-B
PN-EN1982: 2010
4
Cleanout opening seal
Technical fibre
5
Bonnet gasket
EPDM/NBR
PN-EN1629: 2005
6
Bolt
Steel Fe/Zn5 or stainless steel
PN-EN ISO 4762: 2006
7
Bolt plug
Paraffin
8
Valve seal
EPDM/NBR
PN-EN1629: 2005
9
Hydrant valve
AlSi
Stainless steel 1.4401
PN-EN1706: 2011
PN-EN 10088-2: 2014
2.3 DIMENSIONS
