WIKA L990.36 Specifications
Diaphragm Seals
Application
Process industry diaphragm seal to combine with Bourdon tube
pressure gauges. Intended for corrosive, contaminated, hot or
viscous pressure media.
Design
Body with flush diaphragm which requires system fill fluid to transmit
pressure to the instrument.
Process Connection
1/2” NPT to 1” NPT
Instrument Connection
¼” or ½” NPT-female
Suitable Pressure Ranges (Glycerin KN7)
DM 0.7” 2 ½” Gauge: 1500PSI to 9000PSI
4 and 4 ½” Gauge: not available
DM 0.9” 2 ½” Gauge: 160PSI to 9000PSI
4 and 4 ½” Gauge: 1500PSI to 9000PSI
DM 1.0” 2 ½” Gauge: 160PSI to 9000PSI
4 and 4 ½” Gauge: 1000PSI to 9000PSI
Diaphragm-Type Diaphragm Seal
High Pressure Flush Diaphragm Seals
Type L990.36
Available Options (connections, materials, flushing ports, etc.)
See Selection Guide (over)
To determine the effects of temperature and response time in a
specific application, contact the factory for an Application
Questionnaire. The information provided will allow WIKA Technical
Support to accurately model your application parameters using stateof-the-art computer simulation techniques.
ACS L990.36
(ACS 99.13)
Selection Guide - L990.36
L990.36,1/4FX1/2M,SS,SS
Notes
1. Available with G3/4B or G1B
connection only. Minimum
pressure range 1500 PSI.
Running nut is 316 stainless
steel.
2. Minimum pressure range
160 PSI depending on
diaphragm size.
3. Minimum pressure range
1500 PSI.
4. Body and diaphragm must
be the same material.
5. Upper housing is a process
wetted component.
Items in
bold
stock (subject to prior sales).
For optional items, consult
factory for current lead-time.
are av ail able from
Instrument Connection
1/4F = 1/4” NPT female
1/2F = 1/2” NPT female
G1/4 = G1/4 female
G1/2 = G1/2 female
Diaphragm Seal Design (Pressure rating – 9,000PSI)
L990.36 = Flush Diaphragm, male pipe thread (See note 2)
Diaphragm Material (See note 4)
SS = 316 stainless steel
MO = Monel
HC = Hastelloy
TI = Titanium, grade 2
®
400
®
C-276
Body Material (See note 4 & 5)
SS = 316 stainless steel
MO = Monel
HC = Hastelloy® C-276
TI = Titanium, grade 2
®
400
Process Connection
1/2M = 1/2” NPT male (See note 3)
3/4M = 3/4” NPT male
1.0M = 1” NPT male
1.5M = 1-1/2” NPT male
2.0M = 2” NPT male
G1/2B = G1/2B male thread (See note 3)
G3/4B = G3/4B male thread
G1.0B = G1B male thread
G1.5B = G1-1/2B male thread
Options not listed may be available, please consult factory.
Fill Fluid & Mounting options: Please reference data sheet ACS 99.MO
THE MEASURE OF
Total Performance
Ordering Information:
State computer part number (if available) / type number / size /
range / connection size and location / options required.
Specifications given in this price list represent the state of engineering at the time of printing.
Modifications may take place and the specified materials may change without prior notice
05/01
TM
WIKA Instrument Corporation
1000 Wiegand Boulevard
Lawrenceville, Georgia 30043-5868
Tel: 770-513-8200 Fax: 770-338-5118
http://www.wika.com e-mail: chealseal@wika.com
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