5.3 Rotating flange diaphragm seals – flush and extended (S26RA, S26RE, S26RH and S26RJ)
The extended and flush diaphragm remote seal is designed to connect to flanged pipe fitting, according to ASME B16.5 (S26RA),
EN 1092-1 (S26RE), JIS B 2220 standards (S26RJ) or ISO 10423 (S26RH).
For liquid level measurement installations the seal connects to a flanged tank nozzle, compliant to the relevant standard.
The sealing is provided by a selectable smooth or serrated gasket seat surface finish. The mounting flange is of rotating type and
can be supplied on carbon steel or in stainless steel AISI 316.
158 (6.22)
G
F
Ø C
Ø B
Ø A
25 (0.98) for 1/4 NPT
33 (1.30) for 1/2 NPT
flushing thread(s)
Ø D
Flushing ring (option)
Ø E
Ø C
Ø E
Ø D
Ø A
Ø B
50, 100, 150 mm (1.97, 3.94, 5.91)
Insert lenght available
158 (6.22)
G
Figure 15: Flush rotating-flange seals (flushing ring as an option)
Figure 16: Extended rotating-flange seals
Figure 17: Flush rotating-fange (API) ring-joint construction
16 OI/S26-EN Rev. B | 2600T Series Pressure transmitters
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