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Diaphragm Seals (DS)
ACCUTROL offers a wide range of diaphragm seals for applications where the medium is polluted, crystallises, is viscous or where easy cleaning is required.
For other types or materials than mentioned below, e.g. Hastelloy C, please contact ACCUTROL or your local supplier.
Ranges from 250 mbar to 1600 bar are available.
Minimum span is not the same for pressure gauges with diaphragm seal and pressure transmitters with diaphragm seal.
ACCUTROL offer 3 operating temperature ranges: -5 – 130°C (standard), -40 – 100°C or +5 – 200°C.
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Diaphragm Seals with Flange |
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ACCUTROL diaphragm seals with flange are available in the following materials:
Nickel-plated steel, AISI 316 and AISI 316 with PTFE (teflon) coated wetted parts.
The diaphragm is available in:
PTFE, PVDF, Viton, AISI 316 or Silver. |
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Flange Type |
Min. Span (bar) |
Max. Press. (bar) |
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0.25
0.25
0.25 |
40
100
10 |
40
100
10 |
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0.25
0.25 |
40
40 |
40
40 |
ANSI B 16.5-1981
2" class 150
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1 |
0.25 |
10 |
10 |
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Diaphragm Seals with Thread |
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Diaphragm seals with threaded nipple are available in AISI 316. |
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Thread Type |
Min. Span (bar) |
Max. Press. (bar) |
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Gauge |
Transm |
Gauge |
Transm |
G1/2B (1/2" BSP)
G1B (1" BSP)
1 NPT |
100
6
6 |
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Diaphragm Seal with Internal Knuckle thread |
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Diaphragm seals are made in AISI 316 or AISI 316L
The diaphragm is available in the following materials:
PTFE, PVDF, Viton, AISI 316 or Silver. |
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Connection Type |
Min. Span (bar) |
Max. Press. (bar) |
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Gauge |
Transm |
Gauge |
Transm |
DS 722.1
SMS 1148
DIN 11887
DIN 11864-1-B
DS/ISO 2853 (IDF) |
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Diaphragm Seal with External Knuckle thread |
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Diaphragm seals are made in AISI 316 or AISI 316L. The union nut is made in AISI 304.
The diaphragm is available in the following materials:
PTFE, PVDF, Viton, AISI 316 or Silver. |
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Connection Type |
Min. Span (bar) |
Max. Press. (bar) |
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DS 722.1
SMS 1148
DIN 11887
DIN 11864-1-B
DS/ISO 2853 (IDF) |
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Diaphragm Seal with ISO 2852 Clamp Connection and 3A Approval. |
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Diaphragms seals and diaphragms are made in AISI 316L.
Standard surface roughness is
is electropolished to |
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Connection Type |
Min. Span (bar) |
Max. Press. (bar) |
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Gauge |
Transm |
Gauge |
Transm |
DS /ISO 2852, DN 50/51
DS/ISO 2852, DN 38
2" APC clamp |
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In-Line Diaphragm Seal with ISO 2852 Clamp Connection and 3A Approval. |
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Diaphragm seals and diaphragms are made in AISI 316L.
The surface roughness is electropolished to |
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Connection Type |
Min. Span (bar) |
Max. Press. (bar) |
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Gauge |
Transm |
Gauge |
Transm |
DN25, DN38, DN50/51, DN100, DN150 |
1 |
1 |
40 |
40 |
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In-Line Diaphragm Seal with DIN 11887 Connection and 3A Approval. |
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Diaphragm seals and diaphragms are made in AISI 316L.
The surface roughness is electropolished to
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Connection Type |
Min. Span (bar) |
Max. Press. (bar) |
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Gauge |
Transm |
Gauge |
Transm |
DN32, DN50, DN65, DN 80 |
1 |
1 |
25 |
25 |
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