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DIAPHRAGM SEALS

The Weiss line of Diaphragm Seals, in conjunction with Weiss pressure indicators, offers instrumentation that’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.

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 (304S.S. standard)
Diaphragm: 316 L S.S. welded or 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.

Ordering Code: ___-DS___-__
 A  -DV B C  D
-DT
DS=316ss
DV=Viton
DT=Teflon
Ex:25-DS12-50

A.
Top Connection
25=1/4" NPT
50=1/2" NPT
B.
Flushing/No Flushing
0=No flushing conn.
1=Flushing conn.
C.
Lower Housing Mat'l
2=316SS
3=Steel
4=304 SS
D.
Process Conn.
25=1/4" NPT
50=1/2" NPT
75=3/4" NPT

For Saddle Weld 3" and larger process connections. Recommended for applications that require a continuous process flow across the diaphragm to insure pressure sensing is not inhibited by solids buildup. The diaphragm is welded to the upper housing to permit for inspection or cleaning of the diaphragm without the loss of fill fluid.

SERIES SW
Top Connection: 1/4" or 1/2" NPT
Top Housing: Carbon Steel (316 S.S. optional)
Lower Housing: Carbon Steel (316 S.S. optional)
Diaphragm: 316 L (All other metallic optional)
Bolts: Carbon Steel (300 Series optional)
Ordering Code: ___-SW-___
 A  B      C  D
Ex:  25-3-SW-3 4
A.
Top Connection
25=1/4" NPT
50=1/2" NPT
B.
Top Housing
2=316 S.S.
3=Carbon Steel (std)
C.
Lower Housing Mat'l
2=316SS
3=Carbon Steel
D.
Process Conn.
3=3"
4=4"

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