Jafar 2901 Manual de funcionamiento y mantenimiento - Página 4

Navegue en línea o descargue pdf Manual de funcionamiento y mantenimiento para Unidad de control Jafar 2901. Jafar 2901 10 páginas. Flange-to-flange gate valves with soft seals and pneumatic actuators

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The valve cover to body seal is a rubber gasket which also seals the bolt penetration points to prevent
any leaks from their leads. All inner and outer cast-iron surfaces of the valve are epoxy powder coated. The gate
valves from DN350 to DN400 feature a wedge guide system made of plastic inserts.

2.2 MATERIALS

The table below lists the structural materials of the gate valves with soft seals.
Item
Part designation
1
Body
2
Cover
3
Link
4
Sealing plug
5
Safety ring
6
Wedge
7
Spindle nut
8
Spindle
9
Valve cover gasket
10
O-ring
11
12
Bolt
13
Pneumatic actuator
Material
Cast iron, EN-GJS-400-15
or EN-GJS-500-7
Cast iron, EN-GJS-400-15
or EN-GJS-500-7
Cast iron, EN-GJS-400-15
or EN-GJS-500-7
Brass
Steel grade 1.1260
Cast iron, EN-GJS-400-15
or EN-GJS-500-7
EPDM/NBR
Brass
or EN-GJS-400-15
Steel grade 1.4021
EPDM/NBR
EPDM/NBR
Steel, Fe/Zn5, stainless steel
Manufacturer's catalogue
OPERATION AND MAINTENANCE MANUAL
Reference standard
PN-EN 1563: 2012
PN-EN 1563: 2012
PN-EN 1563: 2012
PN-EN 1982: 2010
PN-74/H-84032
PN-EN 1563: 2012
PN-EN 1563: 2012
PN-ISO 1629: 2005
PN-EN 1982: 2010
PN-EN 1563: 2012
PN-EN 10088-1: 2014
PN-ISO 1629: 2005
PN-ISO 1629: 2005
PN-EN ISO 4762: 2006
09-2015
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