Mansfield & Green
diaphragm seals come in a variety
of designs ranging from low cost gauge protectors and
welded metal diaphragm units, to seals with removable
metal, TEFLON, or elastomer diaphragms ideal for field
replacement. Available standard ranges are from 29" Hg
vacuum (736mm Hg at 0°C) to pressures up to 2500 psig
(176 bar). Optional ranges are available up to 5000 psig
(690 bar).
Seal Mounting Criteria
The type of seal mounting used is particular to the type
of application where the seal element will be used.
Thread attached seal elements are used when the
seal may be easily installed on a threaded process
pipe.
Flange attached are required in piping system with
flange connections per ANSI B16.5. These seals are
limited to the pressure rating equal to the flange class
pressure rating.
In-Line Flow Thru is used in applications where
process pressure measurement is required in flowing
pipeline. AMETEK offers several styles to choose
from.
Mansfield & Green diaphragm seals are constructed
of materials suitable for all types of applications and
process media. Utmost care should be exercised when
specifying to insure material compatibility with your specific
requirement.
Seals for Every Application
Type C Series
These quick-couple, one-piece seals are designed to
meet 3A standard requirements for sanitary piping in
food, beverage, pharmaceuticals, and other industries.
Type E Series
One of AMETEK’s most economical seal designs, these
units feature a unique construction that is free of bolts.
Type EW seals protect against leakage and fugitive
emissions as defined by the EPA Clean Air Act of 1990.
Available with ranges up to 5000 psig (Type ES up to
2000 psig), they can be supplied with male threads for
direct connection to the process without the need for
additional fittings.
Type L Series
For demanding low-pressure applications, the Type
L Series elements provide users with a cost-effective
solution. These seals feature a removable elastomer
diaphragm for pressure ranges from 29" Hg vacuum to
1250 psig at 100°F (88 bar at 38°C).
Type XR Series
The XR Series was designed for applications where safety
is a top priority. It has a 4:1 safety ratio and is welded
to a USG process or liquid filled gauge. Welding the seal
to the gauge reduces leak paths, as well as possible tampering
after the unit is in service. The XR Series is available
in 316L SST with cooling fins or in the welded style
in Hastelloy C, MONEL or Tantalum.
Type R Series
Used in general purpose applications, this seal element
has a removable metal diaphragm. Ideal for applications
from 15 to 2500 psig at 100°F (1 to 176 bar at 38°C),
these elements feature a diaphragm that is easily
replaced by the user. These seals are available in a
variety of diaphragm materials.
Type S Series
Economical seal incorporates a diaphragm welded permanently
to the top housing. Welded metal seals are
ideal for general purpose applications with ranges from
15 to 2500 psig at 100°F (1 to 176 bar at 38°C). Optional
ranges are available up to 5000 psig (690 bar).
Type SCE Series
This particular type of seal is ideal for applications where
piping or insulation requires extension of the diaphragm
into the flow-stream of the process media. They are also
suitable for tank level applications.
Type SCW Series
Designed for applications requiring control of fugitive
emissions, toxic and explosive media, these all-welded
seals are available with ranges from 10 psig to Class 300.
Type SMJ and SNJ Series
These seal elements are used in applications where there
is a jacketed pipeline and where heated or cooled processes
are involved. The Type SMJ conforms to Schedule
40 process pipe rating (other schedules available).
Type SNJ seals meet ANSI flange pressure/temperature
ratings.
Type ST Series
Type ST Series is specifically designed to protect electronic
transmitters, DP transmitters, transducers, and
low pressure gauges against process media damage
in a wide variety of process control and pipeline applications.
Ideal for transmitter applications where closed
systems require high sensitivity, this series provides superior
accuracy where greater volumetric displacement
is required.
Type T Series
The T Series is ideal for pressure ranges from 10 psi to
2500 psi. These seal elements feature a TEFLON diaphragm
that is field replaceable. They are ideal for corrosive
applications with ranges from 10 to 2500 psig at
100°F (0.8 to 176 bar at 38°C). These seals are suitable
for applications with a temperature range of -40 to 400°F
(-40 to 204°C).