DIAPHRAGM SEALS
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The Weiss line of Diaphragm Seals,in conjunction with Weiss pressure indicators,offers instrumentationthat’s rugged and carefully calibrated to withstand the most severe industrial,
process or OEM service. Our diaphragm seals are available in a variety of metal housing
materials and process connection sizes to fit most requirements.
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Series DS/DV/DT
Max. Pressure/Temperature Limits: Vacuum thru 2300 psi to 100°F,
1500psi to 200°F, 600 psi to 400°F.
Top Housing: 1/4" or 1/ 2" NPT (304 S.S. standard)
Diaphragm: 316 L S.S. welded, Viton* or Teflon**
Nuts and Bolts: Stainless Steel
Lower Housing: 1/4" thru 1" NPT
* Viton is furnished for Vacuum, 30 psi and
Compound 30-0-15
psi ranges.
** Teflon is available for ranges to 200 psi.
Ranges 0-30” HG, 30-0-15 psi,
30-0-30 psi. Silicone Filling only. |
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| Ordering Code: |
___ -DS ___-__
A -DV B C D
-DT |
DS=316ss
DV=Viton
DT=Teflon |
Ex:25-DS12-50 |
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| A. |
Top Connection
25=1/4" NPT
50=1/2" NPT |
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B. |
Flushing/No Flushing
0=No flushing conn.
1=Flushing conn. |
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C. |
Lower Housing Mat'l
2=316SS
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D. |
Process Conn.
25=1/4" NPT
50=1/2" NPT
75=3/4" NPT
10= 1" NPT |
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LIQUID FILLINGS: Food-Grade Glycerine •
Silicone DC200
The Series MD/MN is a compact, lightweight, economical diaphragm seal. The upper and lower housing,
as well as the diaphragm, are type 316 stainless steel - all welded together making a one piece integral
unit, ideally suited for those applications where space is a factor. The use of a hermetically sealed,
liquid filled pressure gauge in conjunction with either a MD or MN seal protects the indicating gauge
from both the process medium and atmospheric conditions, as well as reduces pointer fluctuations
due to vibration and pulsation.
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