MGS9/1B0 pages

MGS9/1B

diaphragm seal
with threaded connection

Diaphragm seals are designed to isolate the sensing element of pressure gauges, pressure switches and electronic pressure transmitter from
process fluids which may be corrosive, viscous, sedimentous and/or with a high temperature. The diaphragm, welded for model 1B0 and
mechanically clamped between the upper housing and intermediate ring for model 1BS , is leak proof tested to guarantee fill fluid separation
from process fluid. This diaphragm seal can be cleaned by removing the lower housing. This construction feature and its compact design
suits to many applications requiring frequent maintenance.

4.1B0 - MGS9/1B0 - without intermediate ring

4.1BS - MGS9/1BS - with intermediate ring

Available ranges (see table below): from 0...40 INWC to 0...580
psi (from 0...0,1 to 0...40 bar).
Max working pressure: 0...870 psi (60 bar) (3).
Process temperature: -49...+302°F (-45°C...+150°C.)
Accuracy (1): (add to instrument accuracy) ±0,5% for direct
mounting, ±1% for capillary mounting.
Instrument connection: AISI 304 st.st.
Diaphragm material:
4 - AISI 316L st.st.,
6 - Monel 400,
9 - Hastelloy C 276,
B - Tantalum,
J - Alloy 600,
I - Alloy 825;
U - 25.22.2.
Gaskets: PTFE up to +482°F (+250°C); graphite over +482°F
(+250°C)
Process connection:
5 - AISI 316L st.st.
N - AISI 316L st.st. PTFE coated (2),
6 - Monel 400
9 - Hastelloy C 276.
Clamp nuts and bolts: AISI 304 st.st.
Filling liquids: Silicon oil.

Available ranges (see table below): from -30...0 INHG to 0...580
psi (from -1...0 to 0...40 bar).
Max working pressure: 0...870 psi (60 bar) (3).
Process temperature: -49...+302°F (-45°C...+150°C).
Accuracy (1): (add to instrument accuracy) ±0,5% for direct
mounting, ±1% for capillary mounting.
Instrument connection: AISI 304 st.st..
Diaphragm material:
4 - AISI 316L st.st.
8 - AISI 316L st.st. PTFE coated,(2)
E - Hastelloy C276 PTFE coated,(2)
C - Tantalum PTFE coated,(2)
2 - Titanium.
Gaskets: PTFE up to +482°F (+250°C); graphite over +482°F
(+250°C)
Process connection and intermediate ring:
5 - AISI 316L st.st.
N - AISI 316L st.st.,PTFE coated,(2)
F - Polipropylene,
V - PVC.
Clamp bolts: AISI 304 st.st.
Filling liquids: Silicon oil.
(1) at 68°F (20 °C) process temperature (or state temperature when
ordering)
(2) Max temperature +302°F (+150°C), with PTFE coating - G 1/2 A only
(3) In case of order on demand of “continuous duty” model or in case of
accidental overpressure, please see our catalogue MGS9/2B

Ranges
Instrument type
Bourdon tube, DS 4”, 6” (100...150 mm)
Diaphragm differential pressure gauges
Diaphragm pressure switches
Pressure transmitters

Minimum range

Maximum range

0...10 psi (0...0,6 bar)
0...100 InH2O (0...250 mbar)

0...580 psi (0...40 bar)

Vacuum and compound gauges included

0...360 psi (0...25 bar)
0...580 psi (0...40 bar)
0...580 psi (0...40 bar)

Max static pressure 60 bar
Vacuum and compound gauges included
Max static pressure 60 bar

0...15 psi (0...15 bar)
0...40 InH2O (0...100 mbar)

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Notes