Jafar 2904 Bedienings- en onderhoudshandleiding - Pagina 4

Blader online of download pdf Bedienings- en onderhoudshandleiding voor {categorie_naam} Jafar 2904. Jafar 2904 11 pagina's. One-way knife gate valves with drive actuator

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panel design. The valve knife clears the body driven by the electric actuator (available from DN50) which drives
the nut-seated threaded spindle from the outside. The one-way design means that the flow may only be admitted
from one direction only to keep the valve leak-tight. The holes for flange-to-flange connection are tapped in the
top valve body section and through in the bottom valve body section (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
1
Body
2
Seal
3
Knife
4
Spindle
5
Stem
6
Drive coupling
7
Bolt
8
Safety ring
9
Cap
10
Shielding tube
11
Pressure plate
12, 13
Gasket
14
Electric drive actuator
Material
Grey cast-iron, EN-GJL-250
Spheroidal cast-iron, EN-GJS-400-15
Steel grade 1.4301
Package: Asbestos-free sealant +
NBR
Steel grade 1.4301
Steel grade 1.4021
Steel grade 1.0038
Cast-iron, EN-GJS-400-15
Stainless steel, A2
Steel grade 1.4301
Polypropylene
Steel, R45
Silumin, AlSi
Rubber NBR
OPERATION AND MAINTENANCE MANUAL
Reference standard
PN-EN 1561: 2012
PN-EN 1563: 2012
PN-EN 10088-1: 2014
Manufacturer's catalogue
PN-EN 1629: 2005
PN-EN 10088-1: 2014
PN-EN 10088-1:2014
PN-EN 10025-2:2007
PN-EN 1563: 2012
PN-EN ISO 4014: 2011
PN-EN 10088-1:2014
PN-EN ISO 1873: 2000
PN-89/H-84023.07
PN-EN 1706: 2011
PN-EN 1629: 2005
Manufacturer's catalogue
03-2016
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