WIKA · Pressure measurement · Family 990
Diaphragm seal with flange connection
Cell-type with extended diaphragm
EACCRNMTSCHS
Price
On request
Depends on configuration
Description
Diaphragm seals are used for the protection of pressure measuring instruments in applications with difficult media. In diaphragm seal systems, the diaphragm of the diaphragm seal effects the separation of the instrument and the medium. The pressure is transmitted to the measuring instrument via the system fill fluid which is inside the diaphragm seal system.
For the implementation of demanding customer applications, there are a wide variety of designs, materials and system fill fluids available.
For further technical information on diaphragm seals and diaphragm seal systems see IN 00.06 'Application, operating principle, designs'.
Diaphragm seal with flange connection, model 990.35
Together with a blind flange, the model 990.35 diaphragm seal is available in a wide variety of dimensions following the usual standards for this market. Due to the extended diaphragm, the diaphragm seal can be used at thick-walled or insulated locations in pipeline and vessel construction.
Mounting of the diaphragm seal to the measuring instrument may be made via a direct connection, for high temperatures via a cooling element or via a flexible capillary.
For the material selection WIKA offers a variety of solutions, in which the diaphragm seal cell, the extension and the wetted parts can be made of identical or different materials. The diaphragm and the extension can, as an alternative, be coated.
Special features
- Intermediate flange (diaphragm seal cell) with extended diaphragm
- Versions for all common standards and nominal widths available
- When special materials are selected, all wetted parts are made of the selected material
Identification
| Model | 990.35 |
| Product family | 990 |
| Subcategory | Diaphragm seal |
Process conditions
| Process connection | DIN EN 1092-1 DN 50, 80, 100, 125ASME B16.5 2", 3", 4", 5"GOST 33259 DN 25, 40, 50, 65, 80, 100, 125DIN EN 1092-1ASME B16.5GOST 33259DIN EN 1092-1 DN 50 Form B1DIN EN 1092-1 DN 80 Form B2DIN EN 1092-1 DN 100 Form C (tongue)DIN EN 1092-1 DN 125 Form D (groove)ASME B16.5 2" RF 125 ... 250 AAASME B16.5 3" Flat faceASME B16.5 4" Small tongueASME B16.5 5" Small male faceASME B16.5 5" Small grooveGOST 33259 DN 25 Type BGOST 33259 DN 40 Type C (tongue)GOST 33259 DN 50 Type D (groove)GOST 33259 DN 65 Type E (spigot, male face)GOST 33259 DN 80 Type F (recess, female face)GOST 33259 DN 100GOST 33259 DN 125 |
| Process temperature | ≤ +400 °C |
Materials
| Case material | Stainless steel 1.4404 (316L), Stainless steel 1.4539 (904L), Stainless steel 1.4541 (321), Stainless steel 1.4571 (316Ti), Duplex 2205 (1.4462), Superduplex (1.4410), Hastelloy C22 (2.4602), Hastelloy C276 (2.4819), Inconel 600 (2.4816), Inconel 625 (2.4856), Incoloy 825 (2.4858), Monel 400 (2.4360), Nickel 200 (2.4060, 2.4066), Titanium grade 2 (3.7035), Stainless steel 1.4435 (316L), Titanium grade 7 (3.7235), Titanium grade 11 (3.7225), Tantalum, ECTFE coating, PFA (perfluoroalkoxy) coating, FDA, PFA (perfluoroalkoxy) coating, antistatic, Gold plating, Wikaramic® coating |
| Wetted parts material | Stainless steel 1.4539 (904L), Stainless steel 1.4541 (321), Stainless steel 1.4571 (316Ti), ECTFE coating, Hastelloy C22 (2.4602), Hastelloy C276 (2.4819), Inconel 600 (2.4816), Inconel 625 (2.4856), Incoloy 825 (2.4858), Monel 400 (2.4360), Nickel 200 (2.4060, 2.4066), Titanium grade 2 (3.7035), Titanium grade 11 (3.7225), Tantalum, Stainless steel 1.4404 / 1.4435 (316L), PFA (perfluoroalkoxy) coating, FDA, PFA (perfluoroalkoxy) coating, antistatic, Gold plating, Duplex 2205 (1.4462), Superduplex (1.4410), Gold plating® coating, Wikaramic, PFA (perfluoroalkoxy) coating, Wikaramic ® coating |
| Sealing material | Form B1, Form A, Form B2, Form C (tongue), Form D (groove), Form E, Form F, RF 125 ... 250 AA, RFSF, Flat face, Small tongue, Small male face, Small groove, Small female face, Large tongue, Large male face, Large groove, Large female face, Type B, Type A (flat face), Type C (tongue), Type D (groove), Type E (spigot, male face), Type F (recess, female face), RJF groove |
Certifications and approvals
| Certifications | EACCRNMTSCHS |
Additional details
| Datasheet languages | EN |
Tables from datasheet
| Model 990.35 | Standard | Option |
|---|---|---|
| Level of cleanliness of wetted parts | Oil and grease free per ASTM G93-03 level E (WIKA standard) and ISO 15001 (< 1,000 mg/m²) | ■ Oil and grease free per ASTM G93-03 level D and ISO 15001 (< 220 mg/m 2 ) ■ Oil and grease free per ASTM G93-03 level C and ISO 15001 (< 66 mg/m²) |
| Origin of wetted parts | International | EU, CH, USA |
| Extension length (Tolerance: ±2,5 mm[±0,098 in]) | 50 mm[1.968 in] | ■ 100 mm[3.937 in] ■ 150 mm[5.905 in] ■ 200 mm[7.874 in] |
| Connection to the measuring instrument | Adapter | - |
| Type of mounting | Direct mounting | ■ Capillary ■ Cooling element |
| Design per NACE | - | ■ MR0175 ■ MR0103 |
| Vacuum service (see IN 00.25) | Basic service | ■ Premium service ■ Advanced service |
| Instrument mounting bracket (only for capillary option) | - | ■ Form H per DIN 16281, 100 mm, aluminium, black ■ Form H per DIN 16281, 100 mm, stainless steel ■ Bracket for pipe mounting, for pipe Ø20 ... 80 mm, steel (see data sheet AC 09.07) |
| Standard | Nominal width | Sealing face | |
|---|---|---|---|
| Standard | Option | ||
| Following DIN EN 1092-1 | DN 50 DN 80 DN 100 DN 125 | Form B1 | ■ Form A ■ Form B2 ■ Form C (tongue) ■ Form D (groove) ■ Form E ■ Form F |
| Following ASME B16.5 | 2" 3" 4" 5" | RF 125 ... 250 AA | ■ RFSF ■ Flat face ■ Small tongue ■ Small male face ■ Small groove ■ Small female face ■ Large tongue ■ Large male face ■ Large groove ■ Large female face |
| Following GOST 33259 | DN 25 DN 40 DN 50 | Type B | ■ Type A (flat face) ■ Type C (tongue) ■ Type D (groove) ■ Type E (spigot, male face) ■ Type F (recess, female face) |
| Upper body of diaphragm seal | Wetted parts | Maximum permissible pro - cess temperature ¹⁾ in °C [°F] |
|---|---|---|
| Stainless steel 1.4404 (316L) | Stainless steel 1.4404 / 1.4435 (316L), standard version | 400 [752] |
| Stainless steel 1.4539 (904L) | ||
| Stainless steel 1.4541 (321) | ||
| Stainless steel 1.4571 (316Ti) | ||
| ECTFE coating | 150 [302] | |
| PFA (perfluoroalkoxy) coating, FDA | 260 [500] | |
| PFA (perfluoroalkoxy) coating, antistatic | ||
| Gold plating | 400 [752] | |
| Wikaramic ® coating | ||
| Hastelloy C22 (2.4602) | 260 [500] | |
| Hastelloy C276 (2.4819) | 400 [752] | |
| Inconel 600 (2.4816) | ||
| Inconel 625 (2.4856) | ||
| Incoloy 825 (2.4858) | ||
| Monel 400 (2.4360) | ||
| Nickel 200 (2.4060, 2.4066) | 260 [500] | |
| Titanium grade 2 (3.7035) | 150 [302] | |
| Titanium grade 11 (3.7225) | ||
| Tantalum | 300 [572] | |
| Stainless steel 1.4435 (316L) | Stainless steel 1.4435 (316L) | 400 [752] |
| Stainless steel 1.4539 (904L) | Stainless steel 1.4539 (904L) | |
| Stainless steel 1.4541 (321) | Stainless steel 1.4541 (321) | |
| Stainless steel 1.4571 (316Ti) | Stainless steel 1.4571 (316Ti) | |
| Duplex 2205 (1.4462) | Duplex 2205 (1.4462) | 300 [572] |
| Superduplex (1.4410) | Superduplex (1.4410) | |
| Hastelloy C22 (2.4602) | Hastelloy C22 (2.4602) | 400 [752] |
| Hastelloy C276 (2.4819) | Hastelloy C276 (2.4819) | |
| Inconel 600 (2.4816) | Inconel 600 (2.4816) | |
| Inconel 625 (2.4856) | Inconel 625 (2.4856) | |
| Incoloy 825 (2.4558) | Incoloy 825 (2.4858) | |
| Monel 400 (2.4360) | Monel 400 (2.4360) | |
| Nickel 200 (2.4060, 2.4066) | Nickel 200 (2.4060, 2.4066) | |
| Titanium grade 2 (3.7035) | Titanium grade 2 (3.7035) | |
| Titanium grade 7 (3.7235) | Titanium grade 11 (3.7225) |
| Logo | Description | Country |
|---|---|---|
| EAC (option) Pressure equipment directive | Eurasian Economic Community | |
| - | CRN Safety (e.g. electr. safety, overpressure, ...) | Canada |
| - | MTSCHS (option) Permission for commissioning | Kazakhstan |
View all (10)
| DN | Class | Dimensions in mm[in] | |||
|---|---|---|---|---|---|
| Mb | b | d 4 | d 5 | ||
| 50 | 10 / 100 | 45 [1,772] | 20 [7,787] | 102 [4,016] | 48,3 [1,902] |
| 80 | 72 [2,835] | 138 [5,433] | 76 [2,992] | ||
| 100 | 89 [3,504] | 158 [6,22] | 94 [3,701] | ||
| 125 | 124 [4,882] | 188 [7,402] | 125 [4,921] |
| DN | Class | Dimensions in mm[in] | |||
|---|---|---|---|---|---|
| Mb | b | d 4 | d 5 | ||
| 2" | 150 ... 600 | 45 [1,772] | 20 [7,787] | 100 [3,937] | 48,3 [1,902] |
| 3" | 72 [2,835] | 134 [5,276] | 76 [2,992] | ||
| 4" | 150 ... 300 | 89 [3,504] | 158 [6,22] | 94 [3,701] | |
| 5" | 124 [4,882] | 186 [7,323] | 125 [4,921] |
| DN | Class | Dimensions in mm[in] | |||
|---|---|---|---|---|---|
| Mb | b | d 4 | d 5 | ||
| 50 | 10 / 250 | 40 [1,575] | 20 [7,787] | 102 [4,016] | 44 [1,732] |
| 80 | 60 [2,362]] | 133 [5,236] | 74 [2,913] | ||
| 100 | 72 [2,835] | 158 [6,22] | 91 [3,583] | ||
| 125 | 90 [3,543] | 184 [7,244] | 111 [4,37] |
| Material | Unified numbering system (UNS) |
|---|---|
| Stainless steel 316L (1.4404 or 1.4435) | S31603 |
| Stainless steel 904L (1.4539) | N08904 |
| Stainless steel 321 (1.4541) | S32100 |
| Stainless steel 316Ti (1.4571) | S31635 |
| Stainless steel 1.4466 (urea grade) | S31050 |
| Duplex 2205 (1.4462) | S31803 |
| Superduplex 1.4410 | S32750 |
| Tantalum (also lining) | R05200 |
| Hastelloy C276 (2.4819) | N01276 |
| Hastelloy C22 (2.4602) | N06022 |
| Inconel 600 (2.4816) | N06600 |
| Incoloy 825 (2.4858) | N08825 |
| Inconel 625 (2.485) | N06625 |
| Monel 400 (2.4360) | N04400 |
| Nickel 200 (2.4066) | N02200 |
| Nickel 201 (2.4068) | N02201 |
| Titanium 3.7035 (class 2) | R50400 |
| Titanium 3.7235 (class 7) | R52400 |
| Zirconium GR702 | R60702 |
| Designation | Identi- fication number | Solidi- fication point | Boiling/ degradation point | Density at 25 °C | Kin.Viscosity at 25 °C | Remark |
|---|---|---|---|---|---|---|
| KN | °C | °C | g/cm³ | cSt | ||
| Silicone oil | 2 | -45 | +300 | 0.96 | 54.5 | Universal application |
| Glycerine | 7 | -35 | +240 | 1.26 | 759.6 | FDA 21 CFR 182.1320 |
| Silicone oil | 17 | -90 | +200 | 0.92 | 4.4 | Low temperatures |
| Halocarbon | 21 | -60 | +175 | 1.89 | 10.6 | Oxygen 1) and chlorine |
| Methylcyclopentane | 30 | -130 | +60 | 0.74 | 0.7 | For very low temperatures |
| High-temperature silicone oil | 32 | -25 | +400 | 1.06 | 47.1 | For high temperatures |
| Neobee® M-20 | 59 | -35 | +260 | 0.92 | 10.0 | FDA 21 CFR 172.856, 21 CFR 174.5 |
| DI water | 64 | +4 | +85 | 1.00 | 0.9 | For ultrapure media |
| Silicone oil | 68 | -75 | +250 | 0.93 | 10.3 | |
| DI water/propanol mixture | 75 | -30 | +60 | 0.92 | 3.6 | For ultrapure media |
| Medicinal white mineral oil | 92 | -15 | +260 | 0.85 | 45.3 | FDA 21 CFR 172.878, 21 CFR 178.3620(a); USP, EP, SP |
| Maximum temperature | Maximum oxygen pressure |
|---|---|
| to 60 °C | 50 bar |
| > 60 °C to 100 °C | 30 bar |
| > 100 °C to 175 °C | 25 bar |
Industry
Oil & Gas
Thick-walled or insulated pipelines and vessels
Industry
Chemistry / Pharma
Chemical and petrochemical process industry
Industry
Machinery
High-pressure applications
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