Series NKS-N, NKSP-N
Page
3
9520-021-en
Revision 17
TM 10477
Edition 05/2022
1
Technical data
Manufacturer:
Richter Chemie-Technik GmbH
Otto-Schott-Str. 2
D-47906 Kempen
Telephone: +49 (0) 2152 146-0
Fax:
+49 (0) 2152 146-190
E-Mail:
Internet:
Designation :
Shut-off and control butterfly valve of sandwich-type
design with metallic surface coating to increase cor-
rosion resistance.
Series:
NKS-N
with lockable hand lever or worm gear with
manual actuation
NKSP-N
with actuator
Strength and tightness (P10, P11) of the pressure-
bearing body tested to DIN EN 12266-1.
Gas-tight (P12) in the seat to DIN EN 12266-1,
leak rate A
Flange connecting dimensions:
DIN EN 1092-2, type B
(ISO 7005-2 Typ B) PN 10
or ASME B16.5 class 150
Face to face:
DIN EN 558-1, basic series 20
(ISO 5752 series 20)
or API 609 table 1
MSS SP-67 table 3
Materials :
Body material: Ductile cast iron EN-JS 1049 to DIN
EN 1563 (0.7043 DIN 1693)
body lining: PTFE
Disc:
CD-4MCU/PFA
metal-coated
Temperature range :
-60 °C to +200 °C
(-
75 °F to +400 °F)
accord. to operating pressure
See pressure-temperature diagram in
Section 1.6
.
Operating pressure:
from vacuum to 10 bar (145 psig)
accord. to operating temperature
Valve sizes in mm :
with hand lever: DN 50, 80, 100, 150, 200
2“, 3“, 4“, 6“ 8“
with worm-
DN 50, 80, 100, 150, 200, 250,
gear:
300, 350
2“, 3“, 4“, 6“, 8“, 10“, 12“, 14"
with actuator:
DN 50, 80, 100, 150, 200, 250,
300, 350
2“, 3“, 4“, 6“, 8“, 10“, 12“, 14“
Weight:
See
Section 1.3
Dimensions and individual parts:
See sectional drawings in
Section 9
.
Activation:
Hand lever, lockable
Worm gear with handwheel
Pneumatic or electric
(connection to ISO 5211)
1.1 Type plate, CE and body
markings
The stainless steel name plate is firmly riveted to the
body.
If the operator attaches his identification, it must be
ensured that the valve matches the application in
question.
Example of type plate with CE marking:
Body identification :
The following are visible on the body according to DIN
EN 19 and AD 2000 A4:
♦
Nominal size
♦
Rated pressure
♦
Body material
♦
Manufacturer's identification
♦
Melt number/Foundry identification
♦
Foundry date
