WIKA · Pressure measurement · Family 990
Diaphragm seal with flange connection
With internal diaphragm, threaded design, high-pressure version
Range
0…400 bar
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 990.16
With the model 990.16 diaphragm seal, high nominal pressures of PN 400 / class 2500 can be realised. Due to its design, with an internal diaphragm, accurate measurements are possible even with small flange connections. By means of optionally available flushing connections, the process side of the flange can be cleaned and flushed as required.
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 coated.
Special features
- High pressures up to PN 400 / class 2.500
- Flange with internal welded diaphragm
- Small process connections
- Flushing connections optionally available
Identification
| Model | 990.16 |
| Product family | 990 |
| Subcategory | Diaphragm seal |
Measuring range
| Pressure ranges | 0…400 bar · 0…2500 psi |
Process conditions
| Process connection | DN 15DN 20DN 25DN 401"DIN EN 1092-1 DN 15 PN 400DIN EN 1092-1 DN 20 PN 400DIN EN 1092-1 DN 25 PN 400DIN EN 1092-1 DN 40 PN 400ASME B16.5 ½" class 2500ASME B16.5 ¾" class 2500ASME B16.5 1" class 2500ASME B16.5 1 ½" class 2500½"¾"1 ½"1/2"3/4"1 1/2" |
| Process temperature | −20…+400 °C |
Materials
| Case material | Stainless steel 1.4404 (316L), Stainless steel 1.4435 (316L), Stainless steel 1.4539 (904L), Stainless steel 1.4541 (321), Stainless steel 1.4571 (316Ti), Duplex 2205 (1.4462), Superduplex 2507 (1.4410), Hastelloy C22 (2.4602), Hastelloy C276 (2.4819), Inconel 600 (2.4816), Inconel 625 (2.4856), Monel 400 (2.4360), Nickel 200 (2.4060, 2.4066), Titan grade 2 (3.7035), Titan grade 7 (3.7235), Incoloy 825 (2.4858), Titan grade 11 (3.7225), Tantalum, Incoloy 825 (2.4558), ECTFE coating, PFA (perfluoroalkoxy) coating, Gold plating, Wikaramic® coating |
| Wetted parts material | Stainless steel 1.4404 (316L), 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), Monel 400 (2.4360), Nickel 200 (2.4060, 2.4066), Titan grade 2 (3.7035), Titan grade 11 (3.7225), Tantalum, Incoloy 825 (2.4858), PFA (perfluoroalkoxy) coating, Gold plating, Duplex 2205 (1.4462), Superduplex 2507 (1.4410), PFA (perfluoroalkoxy) coating, FDA, PFA (perfluoroalkoxy) coating, antistatic, Gold plating ® coating, Wikaramic, Wikaramic ® coating, Incoloy 825 (2.4558), Stainless steel 1.4435 (316L), Titan grade 7 (3.7235) |
| Sealing material | FPM, PTFE, Metal C snap ring |
Certifications and approvals
| Certifications | EACCRNMTSCHS |
Additional details
| Datasheet languages | EN |
Tables from datasheet
| Model 990.16 | Standard | Option |
|---|---|---|
| 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 D and ISO 15001 (< 220 mg/m²) |
| Origin of wetted parts | International | EU, CH, USA |
| Sealing | ■ FPM, max. 200 °C [392 °F] ■ PTFE, max. 260 °C [500 °F] | Metal C snap ring, max. 400 °C [752 °F] |
| Flushing connection | - | ■ Single flushing connection (G ¼, G⅛, ¼NPT, ⅛NPT) ■ Dual flushing connection (G ¼, G⅛, ¼NPT, ⅛NPT) ■ Plug screws |
| Connection to the measuring instrument | Axial adapter | Axial adapter with G½, G¼, ½NPTor ¼NPT(female) |
| Type of mounting | Direct mounting | ■ Capillary ■ Cooling element |
| Retainer parts | Stainless steel | - |
| 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 15 | Form B1 | Form B2 |
| DN 20 | |||
| DN 25 | |||
| DN 40 | |||
| Following ASME B16.5 | ½" | RF 125 ... 250 AA | RFSF Flat face Ring groove form RJF |
| ¾" | |||
| 1" | |||
| 1 ½" |
| Upper body of diaphragm seal | Lower body of diaphragm seal and diaphragm (wetted) | Maximum permissible process temperature 1) in °C [°F] |
|---|---|---|
| Stainless steel 1.4404 (316L) | Stainless steel 1.4404 (316L) | 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] | |
| Titan grade 2 (3.7035) | 150 [302] | |
| Titan 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 2507 (1.4410) | Superduplex 2507 (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) | |
| Titan grade 2 (3.7035) | Titan grade 2 (3.7035) | |
| Titan grade 7 (3.7235) | Titan 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 (9)
| DN | PN | Dimensions in mm[in] | G 1 | |||||
|---|---|---|---|---|---|---|---|---|
| Mb | D | b | d 4 | f | k | |||
| 15 | 400 | 52 [2.047] | 145 [5.709] | 30 [1.181] | 45 [1.772] | 2 [0.079] | 100 [3.937] | M20 |
| 25 | 400 | 52 [2.047] | 180 [7.087] | 38 [1.497] | 68 [2.677] | 2 [0.079] | 130 [5.118] | M24 |
| DN | Class | Dimensions in mm[in] | G 1 | |||||
|---|---|---|---|---|---|---|---|---|
| Mb | D | b | d 4 | f | k | |||
| ½" | 2500 | 52 [2.047] | 135 [5.315] | 37.2 [1.465] | 34.9 [1.374] | 7 [0.276] | 88.9 [3.5] | ¾"-10 UNC |
| ¾" | 2500 | 52 [2.047] | 140 [5.512] | 38.8 [1.528] | 42.9 [1.689] | 7 [0.276] | 95.5 [3.76] | ¾"-10 UNC |
| 1" | 2500 | 52 [2.047] | 160 [6.299] | 42 [1.654] | 50.8 [2] | 7 [0.276] | 108 [4.252] | 7/8"-9 UNC |
| 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
Chemical and petrochemical industries · Oil and gas industry
Industry
Machinery
High-pressure applications
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