Registered Quality System to ISO 9001 | 913-888-2630 | SORInc.com
8/16
Form 281 (05.18) ©SOR Inc.
Adjustable Dead Band
Pressure Switches
Step 4: Diaphragm and O-Ring
5V1-LA3-N6-C1A-YY
Notes
1. N4 diaphragm system is standard. It is
normally suitable for air, oil, water and non-
corrosive processes.
2. Other diaphragm and o-ring combinations
may be available. Consult the factory or the
SOR representative in your area for more
information.
3. Wetted parts have been selected as repre-
senting the most suitable commercially
available material for use in the service
intended. However, they do not constitute a
guarantee against corrosion or permeation,
since processes vary form plant to plant and
concentration of harmful fluids, gases or
solids vary from time to time in a given
process. Emperical experience by users
should be the final guide. Alternate materials
based on this are generally available.
4. Specify N3 diaphragm system for high cycle
rate, high shock applications where Buna-N
and TCP are compatible with the process.
5. This table shows allowable minimum and
maximum temperature for o-rings.
O-Ring
(Wetted)
Diaphragm
(Wetted)
Designator
Viton
Monel
A4
Kalrez A6
Viton
Hastelloy-B
H4
Kalrez H6
Viton
Hastelloy-C
J4
Kalrez J6
Viton
Carpenter-20
L4
Kalrez L6
Viton GLT
316L SS
M1
Buna-N M2
Viton M4
Neoprene M5
Kalrez M7
Aflas M8
EPR M9 Note 6
Viton
TCP
Teflon-Coated
Polyimide
N1
Buna-N N3 Note 4
Buna-N
N4 Standard
Note 1
Kalrez N5
Kalrez Kalrez N6
EPR
TCP
Teflon-Coated
Polyimide
N7
Aflas N8
Buna-N Buna-N P1
Neoprene Neoprene R1
Viton
Viton
S1
Viton GLT S2
Buna-N
Tantalum
W2
Viton W4
Neoprene W5
Kalrez W6
EPR
Ethylene
Propylene
EPR
Ethylene Propylene
Y1
O-Ring Material ° F ° C
Viton 32 to 400 0 to 204
Viton GLT -20 to 400 -29 to 204
Kalrez* 5 to 400 -15 to 204
Aflas 25 to 400 -4 to 204
Buna-N
Neoprene EPR
-30 to 200 -34 to 93
TCP Teflon Coated
Polyimide
Diaphragm
-30 to 400 -34 to 204
*Kalrez or equivalent
Perfluoroelastomer (FFKM) o-rings
6. M9 diaphragm system is suggested for
steam applications up to 400
o
F.
7. Dead bands are slightly higher when using
H, J, W, N3, or N6 series diaphragm options.
Consult the factory.
To Next Page
Loading...
