DIAPHRAGM PRESSURE SEALS
TO ENSURE PROTECTION AND MEDIA COMPATIBILITY
Seals
Start at
$
Diaphragm seals, shown
with PGH-45L-200, process
gauge, $185, see page G-56.
450
⻬ Protects Pressure
Instrumentation from
Corrosive or Viscous
Fluids, Clogging, and
In-Line Freezing of the
Process Media
⻬ Glycerine Fill Fluid is
Standard, with Optional
Fill Fluids Available
⻬ Displacement of the
Liquid Fill in the
Pressure Seal Through
Movement of the
Diaphragm Transmits
Process Pressure
Directly to the Pressure
Instrumentation
OMEGA®diaphragm pressure
seals protect sensitive pressure
instrumentation from the damaging
effects of corrosives, slurries, or
viscous fluids. A variety of designs
and styles is available to suit
individual application requirements.
100 Series
Distinguished by its 3-part design,
the 100 Series includes a PTFE
coated diaphragm capsule that
threads into the top housing,
ensuring positive sealing at all
surfaces and minimizing fluid
leakage. The diaphragm capsule
can be replaced without replacing
the top housing. Continuous duty is
assured; should the sensor be
removed from the diaphragm seal,
the process fluid is prevented from
escaping. Easy cleaning and
inspection of the diaphragm can be
done during shutdown by detaching
the top and bottom housings.
This design eliminates the need to
refill the seal or recalibrate the
instrument when the top and bottom
housings are separated. A FKM
O-ring, compatible with all standard
fill fluids, and a PTFE backup ring,
make a seal between the diaphragm
capsule and the top housing. The
diaphragm is PTFE coated to
provide an integral gasket, thus
ensuring a leakproof connection
between the diaphragm and bottom
housing. The 100 Series consists
of a diaphragm capsule with a
corrugated, metallic diaphragm
edge welded to a sturdy backup
plate that threads into the top
housing. Once secured, the top
housing can be bolted to the bottom
housing. The bottom housing has a
standard 1⁄2 NPT fitting that easily
threads to the process piping.
102 Series
Virtually identical to the 100 Series
in both performance and design,
the 102 Series includes a standard
#150 raised face flange in place
of a threaded female NPT
process fitting. For more rugged
applications, an optional #300
raised face flange is also available.
202 Series
The 202 Series diaphragm
seal features a bonded PTFE
diaphragm and a PTFE #150 raised
face flange. This all-PTFE wetted
construction provides ruggedness
and maximum corrosion resistance
to acids, caustics, alkalis, ketones,
hydrocarbons, and alcohols. In
the new 202 design, the PTFE
diaphragm is bonded to the top
housing, allowing the top housing
and instrument to be removed
without losing the fill fluid.
OMEGA diaphragm pressure
seals are available for use with
OMEGA pressure instrumentation:
• Pressure Transducers
PX602 (p. B-38), PX603 (p. B-101),
PX605 (p. B-160), PX673
(p. B-113), PX675 (p. B-186)
• Dial Pressure Gauges
PGH (p. G-58), PGJ (p. G-58),
PGT Series (p. G-60)
• Pressure Switches
PSW-300 (p. H-22), PSW-370 (p. H-23),
PSW-400 (p. H-31)
G-65
DIAPHRAGM PRESSURE SEALS
A
C
B
NUTS, BOLTS & FLANGE BY USER
A
B
C
TO ENSURE PROTECTION AND MEDIA COMPATIBILITY
AB C
in mm in mm in mm
33⁄4 95 27⁄8 73 113⁄16 46
102 Series100 Series
FLANGE ABC
SIZE
RATING #
150 41⁄4 127 11⁄2 38
1
⁄2"
1
300 6
150 6 152 13⁄8 35
2"
300 6
in mm in mm in mm
3
2
1
⁄8 61
15
⁄16 49
1
1
1
1
⁄2 38
⁄2 38
1
⁄4 159
1
⁄2 165
202 Series
B
FLANGE ABC
SIZE
RATING #
in mm in mm in mm
1" 150 41⁄4 100 23⁄16 56 13⁄8 35
11⁄2" 150 5 127 25⁄16 59 113⁄32 39
2" 150 6 152 21⁄8 54 19⁄16 40
PRESSURE
GAUGES
A
C
G
SPECIFICATIONS
Pressure: 15 to 2500 psig and
vacuums greater than 30 inHg;
#150 flanges to 150 psi, #300
flanges to 300 psi
Temperature: See fill solution
temperature range
Please Note: When diaphragm
seals are connected to pressure
instrumentation, slight shifts in
calibration will result. OMEGA
recalibrates the instrument with the
seal attached to negate calibration
shifts. Please allow additional lead
time when ordering.
Ordering Examples:
1)PGT-45L-100, 1-100-PM-1/2-CG
OMEGA test gauge and diaphragm
seal with 1 FNPT process connection.
All Monel
fill solution.
PGT-45L-100 $390
1-100-PM-1/2-CG 595
2)PGT-45L-100, 2-102-PM-1/2-CK-300-RF
OMEGA test gauge with 51 mm (2")
#300 raised face flange diaphragm
seal. All Monel wetted parts and
silicone solution.
PGT-45L-100 $390
2-102-PM-1/2-CK-300-RF
($570 + 65 + 95 + 195) 925
Notes: 1 PVC maximum 200 psi @ 23°C
(74°F), 125 psi @ 52°C (125°F), 80 psi @ 66°C
(150°F). 2 #150-RF PTFE flange maximum
150 psi @ 66°C (150°F). 3 PVC,
no thread; use solvent cement to install.
®
wetted parts and glycerine
®
_______
Total $985
_______
Total $1315
MOST POPULAR MODELS HIGHLIGHTED!
To Order
(Specify as Ordering Suffix to Pressure Instrument Model Number)
ORDERING SUFFIX PRICE WETTED MATERIALS
DIAPHRAGM BOTTOM HOUSING
100 Series
[†]-100-SS-1/2-CG* $450 316L SS 316 SS
[†]-100-PM-1/2-CG* 595 K-Monel Monel 400
[†]-100-GG-1/2-CG* 975 Hastelloy®B Hastelloy B
[†]-100-HH-1/2-CG* 975 Hastelloy®C Hastelloy C
[†]-100-SV-1/2-CG* 325 316L SS PVC
102 Series with #150-RF Flange**
[††]-102-SS-1/2-CG-150-RF $465 316L SS 316 SSF
[††]-102-PM-1/2-CG-150-RF 570 K-Monel Monel 400
[††]-102-GG-1/2-CG-150-RF 830 Hastelloy B Hastelloy B
[††]-102-HH-1/2-CG-150-RF 830 Hastelloy C Hastelloy C
202 Series with PTFE Seals with #150-RF Flange
1-202-TT-1/2-CG-150-RF $460 PTFE with 1" process conn.
1
11/2-202-TT-1/2-CG-150-RF 540 PTFE with 1
⁄
2" process conn.
2-202-TT-1/2-CG-150-RF 580 PTFE with 2" process conn.
To order seals separately, remove “CG” suffix from model number and subtract $45 from price.
*
T
o order 102 series seals with #300-RF flange, change “150” in model number to “300”
**
and add $195 to price.
[†] Specify process fitting:
[††] Specify process fitting: 1
1
⁄4, 1⁄2, 3⁄4 or 1" (all standard)
1
⁄2, (standard) or 2" ($65 additional)
Fill Solutions
TEMP
TYPE RANGE CODE PRICE USAGE
Glycerine -18 to 204°C CG STD Gauge pressure
(0 to 400°F)
Silicone -40 to 315°C CK $95 Gauge/vacuum pressure
(-40 to 600°F)
Halocarbon -57 to 150°C CF
Quote at
Gauge/vacuum pressure in
(-70 to 300°F) time of presence of strong oxidizing
order
agents (oxygen, chlorine, etc.)
G-66
(1)(3)
(2)
(2)
(2)
One Omega Drive | Stamford, CT 06907 | 1-888-TC-OMEGA (1-888-826-6342) | info@omega.com
EPG05
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