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Data Sheet
1198 Finned Siphon
FEATURES
For pressure ratings to 3000 psi
For process temperature ratings
to 700°F (371°C)
Compatible with many process media
For use with gauges, switches, transducers
and diaphragm seals
TYPICAL USES
Chemical and petrochemical
Oil and gas
Pulp and paper
Power
SPECIFICATIONS
Process Conn: ¼ NPTM, ½ NPTM
Instrument Conn: ¼ NPTF, ½ NPTF
Materials: 316L stainless steel, Monel
Max Allowable
Working Pressure: 3,000 psi (700°F)
Wetted
Components: 316L stainless steel
KEY BENEFITS
• Protects instrument from elevated temperatures
• Direct mounting of instrument with siphon to
the process
• Built-in dampening mechanism combats
pulsation
FINNED SIPHON HEAT DISSIPATION CHART
Bourdon Tube
Gauge Socket
Siphon Inlet
Input Process
Temperature
This graph represents the heat
dissipation based on results of
a specic laboratory test. These
results may vary in the eld based
on multiple factors such as ambient
temperature, type of process media
and/or velocity. This data set is to
be used as a reference point only.
These test results are based on an
ambient temperature of 68°F.
50 100 150 200 250 300 350 400 450 500 550 600 650 700 750
DEGREES °F
1 of 2
All specications are subject to change without notice.
All sales subject to standard terms and conditions.
©2019 Ashcrof t Inc . 1198_ds_ Rev F_07-19
ashcroft.com
info@ashcroft.com
1.800.328.8258
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Data Sheet
1198 Finned Siphon
DIMENSIONS
Connection
1.500
in
1.450
Instrument
Connection
1/2 - 14 NPT
.975 in
.0625 in TYP.
.2500 in TYP.
R.12 5 in
1/2-14 NPT
Process
Connection
6.000 in
3/16˝
.9750 in
2.750 in
5.125 in
.7500 in
1.4000 in
.50 in
+ .005
1.0350 in
- .0000
1.500 in
1.45 min
Weight = 1.55 Lbs
.8430 in
.2500 in Typ.
.0625 in Typ.
.7500 in
.2630 in
1.200 in
316 Stainless Steel Monel
ORDERING CODE
Example:
04 1198 SS 50 X5GC3
Process Connection
02 - ¼ NPT Male, available with (25) ¼ NPT Female inst. connect only
04 - ½ NPT Male, available with (50) ½ NPT Female inst. connect only 04
Model
1198 - Finned siphon 1198
Material
SS - 316L stainless steel SS
PM - Monel*
Instrument Connection
25 - ¼ NPT Female
50 - ½ NPT Female 50
Options (If choosing an option(s) must include an “X”)
5G - Instrument assembly: pressure gauge, siphon 5G
F3 - Instrument assembly: pressure gauge, diaphragm seal, siphon
NH - Wired stainless steel tag
6B - Cleaned for oxygen
6W - Cleaned for oxidizing process other than oxygen
C3 - Material certificate (Compliance to EN 10204.2004 3.1) C3
*Monel design does not include built-in dampening mechanism
Process
Connection
.843 in
.750 in
3.7250 in
.385 in
6.000 in
1.40 in
.875 in
All specications are subject to change without notice.
All sales subject to standard terms and conditions.
©2019 Ashcrof t Inc . 1198_ds_ Rev F_07-19
2 of 2
ashcroft.com
info@ashcroft.com
1.800.328.8258