Diaphragm seal with sterile connection
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 is 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'.
Due to their hygienic process connection, the model 990.24 diaphragm seals are particularly well suited for food production.
VARINLINE ® is a registered trademark of the company GEA Tuchenhagen GmbH.
for further approvals see page 4
Diaphragm seal with sterile connection, model 990.24
With this diaphragm seal, pressure measuring instruments can be integrated, dead-space free, into a pipeline using a VARINLINE ® access unit or in tanks using a connecting flange for VARINLINE ® access units. The diaphragm seals can withstand the cleaning vapour temperatures occurring in the CIP and SIP processes and thus ensure a sterile connection between the medium to be measured and the diaphragm seal.
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 upper body of the diaphragm seal and the wetted parts can be made of identical or different materials. The wetted parts can, as an alternative, be electropolished.
Special features
- Quick cleaning, without residue
- Suitable for SIP and CIP
- EHEDG-certified and 3-A-compliant
- For installation into VARINLINE ® components
- 100 % material traceability for wetted parts
| Model | 990.24 |
| Product family | 990 |
| Subcategory | Diaphragm seal with sterile connection |
| Pressure ranges | 0…25 bar · 0…360 psi · 0…1 bar · 0…14.5 psi |
| Process connection | VARINLINEVARINLINE® |
| Case material | Stainless steel 1.4435 (316L), Stainless steel 1.4539 (904L), Hastelloy C22 (2.4602), Hastelloy C276 (2.4819), Stainless steel 1.4435 (316L), electropolished |
| Wetted parts material | Stainless steel 1.4435 (316L), Stainless steel 1.4539 (904L), Hastelloy C22 (2.4602), Hastelloy C276 (2.4819), Stainless steel 1.4435 (316L), electropolished |
| Sealing material | EPDM |
| Certifications | 3-AEHEDGCRNEACFDACEMTSCHS |
| Datasheet languages | EN |
| Model 990.24 | Standard | Option |
|---|---|---|
| Pressure range | 0 ... 1 bar to 0 ... 25 bar [0 ... 14.5 psi to 0 ... 360 psi] or all other equivalent vacuum or combined pressure and vacuum ranges | |
| Level of cleanliness of wetted parts | Oil and grease free per ASTM G93-03 level FWIKA standard (< 1,000 mg/m²) | ■ Oil and grease free per ASTM G93-03 level C and ISO 15001 (< 66 mg/m²) ■ Oil and grease free per ASTM G93-03 level D and ISO 15001 (< 220 mg/m2) |
| Origin of wetted parts | International | EU, CH, USA |
| Surface roughness of wetted parts | Ra ≤ 0.76 µm [30 µin] per ASME BPE SF3 (except for weld seam) | Ra ≤ 0.38 µm [15 µin] per ASME BPE SF4, only with electropolished surface (except for weld seam) |
| Connection to the measuring instrument | Axial gauge adapter | Axial gauge adapter with G1/2, G1/4, 1/2 NPT or 1/4 NPT (female) |
| Type of mounting | Direct mounting | ■ Capillary ■ Cooling element |
| Vacuum service (see IN 00.25) | Basic service | ■ Premium service ■ Advanced service |
| Marking of the diaphragm seal | - | Per valid 3-A standard |
| 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) |
| Upper body of diaphragm seal | Wetted parts 1) |
|---|---|
| Stainless steel 1.4435 (316L) | Stainless steel 1.4435 (316L) |
| Stainless steel 1.4435 (316L), electropolished 2) | Stainless steel 1.4435 (316L), electropolished 2) |
| Stainless steel 1.4539 (904L) | Stainless steel 1.4539 (904L) |
| Hastelloy C22 (2.4602) | Hastelloy C22 (2.4602) |
| Hastelloy C276 (2.4819) | Hastelloy C276 (2.4819) |
| Logo | Description | Country |
|---|---|---|
| EU declaration of conformity Pressure equipment directive | European Union | |
| EAC (option) Pressure equipment directive | Eurasian Economic Community | |
| ® | 3-A Sanitary Standard | USA |
| FEBRUARY 2021 TYPE EL CLASS I | EHEDG Hygienic Equipment Design | European Union |
| - | CRN Safety (e.g. electr. safety, overpressure, ...) | Canada |
| - | MTSCHS (option) Permission for commissioning | Kazakhstan |
| Size | PN in bar | Dimensions in mm[in] | ||||
|---|---|---|---|---|---|---|
| Mb | D | d | H | h | ||
| Form B for DN 10 - DN 15, ISO 21,3 and ISO 17,2 (installation Ø 31 mm, clamp Ø 52.7 mm) | 25 | 17 [0.669] | 31 [1.22] | 52.7 [2.075] | 17.3 [0.681] | 13.7 [0.539] |
| Form F for DN 25, ISO 33,7 and 1 " (installation Ø 50 mm, clamp Ø 66 mm) | 25 | 40 [1.575] | 50 [1.969] | 66 [2.598] | 14.4 [0.567] | 12.3 [0.484] |
| Form N for DN 40 - DN 125, ISO 42,4 - 114,3 and1½ " - 6 " (installation Ø 68 mm, clamp Ø 84 mm) | 25 | 60 [2.362] | 68 [2.677] | 84 [3.307] | 14.4 [0.567] | 12.3 [0.484] |
View all (8)
| Suitable VARINLINE ® component | EHEDG-compliant | ||
|---|---|---|---|
| Form B | Form F | Form N | |
| Case | Yes | No | Yes |
| Type T case connecting flange | Yes | Yes | Yes |
| Type T-S case connecting flange | No | No | No |
| Type U case connecting flange | No | No | No |
| Type U-S case connecting flange | No | No | No |
| Type P tank connection flange | No | Yes | Yes |
| 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 |
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