Samson EB 2111 - Page 23

EB2111/2121/2123 EN 3-9
Design and principle of operation
Table 3-5: Materials · Valves · Material numbers according to DIN EN
Type2111 Valve·Unbalanced
Valve size
DN32 to 50 DN15 to 50
Pressure rating
PN16 PN25
PN40
Valve body
Castiron
EN-GJL-250
Spheroidal graphite iron
EN-GJS-400-18-LT
Caststeel
1.0619
Caststainlesssteel
1.4408
Seat·Plug Crsteel CrMosteel CrNiMosteel
Plugstem·Spring CrNisteel
Bottom section Crsteel CrNisteel
Body gasket Graphite on metal core
Extensionpiece·
Separating piece
3)
Brass(forversionfreeofnon-ferrousmetal:CrNisteel) CrNisteel
Type2422 Valve · Balanced by a bellows
Valve size DN15 to 150
Pressure rating PN16 PN16,25 PN16,25,40
Valve body
Castiron
EN-GJL-250
Spheroidal graphite iron
EN-GJS-400-18-LT
Caststeel
1.0619
Caststainlesssteel
1.4408
Seat CrMosteel·Crsteel
4)
CrNiMosteel
Plug
2)
UptoDN100
1)
CrNiMosteel
DN125to250 CrNiMosteel,plugwithPTFEseal CrNiMosteel
Plug stem CrNisteel
Spring CrNisteel
Balancing bellows CrNiMoTisteel·DN125:CrNiMosteel
Bellows housing/bottom section Crsteel CrNisteel
Body gasket Graphite on metal core
Extensionpiece·Separating
piece
3)
Brass(forversionfreeofnon-ferrousmetal:CrNisteel) CrNisteel
Type2422 Valve · Balanced by a diaphragm
Valve size DN65 to 100
Pressure rating PN16 PN25
Valve body CastironEN-GJL-250
Spheroidal graphite iron
EN-GJS-400-18-LT
Seat CrNiMosteel
Plug Brass, plug with EPDM soft seal
Cover 1.0619
Pressure balancing
DiaphragmplateCrNisteel·EPDMbalancingdiaphragm,max.150°CorNBR
diaphragm,max.80°C
1)
Optionally with soft seal with standard K
VS
coefcients
2)
Soft-seated plug with EPDM ring for temperatures up to
150°C
3)
Select the material of the accessories to match that of
the main valve
4)
ForDN65to100only