# Diaphragm seal with threaded connection — 990.10

> Diaphragm seal with threaded connection for protection of pressure measuring instruments in applications with aggressive, hot, corrosive, environmentally hazardous or toxic media.

- Catalog code: 990_10
- Model: 990.10
- Category: Pressure measurement › Diaphragm seals
- Product page: https://avigan.com.ua/wika/en/products/990_10
- Price: on request
- Supplier: AVIGAN (TOV VIKA Prylad), official WIKA partner in Ukraine

## Overview

Model 990.10 Diaphragm seal with threaded connection ✓Threaded design ✓High quality ►To the information!

## Applications

- For aggressive, hot, corrosive, environmentally hazardous or toxic media
- Process industry

## Special features

- Process connection with thread
- Version with internal diaphragm, diaphragm seal parts screwed together
- Large selection of process connections and materials
- Flushing connections optionally available

## Specifications

| Parameter | Value |
|---|---|
| model | 990.10 |
| product family | 990 |
| short description | Diaphragm seal with threaded connection for protection of pressure measuring instruments in applications with aggressive, hot, corrosive, environmentally hazardous or toxic media. |
| subcategory | Diaphragm seal |
| certifications | EAC; CRN |
| languages in datasheet | en |
| pressure ranges | 0 … 250 bar; 0 … 3600 psi |
| process connections | 1 NPT; M20 x 1.5; G1A; G1; 3/8NPT; 3/4NPT; 1NPT; G ¼ A; G ⅜ A; G ½ A; G ¾ A; G 1 A; G 1 ½ A; ¼ NPT; ⅜ NPT; ½ NPT; ¾ NPT; 1 ½ NPT; R ¼; R ⅜; R ½; R ¾; G½A; G¼A; G⅜A; G¾A; G1½A; G½; G¼; G⅜; G¾; ½NPT; ¼NPT; ⅜NPT; ¾NPT; 1½NPT; R½; R¼; R⅜; R¾; G1/2A; G1/4A; G3/8A; G3/4A; G11/2A; G1/2; G1/4; G3/8; G3/4; 1/2NPT; 1/4NPT; 11/2NPT; M20x1.5; R1/2; R1/4; R3/8; R3/4 |
| 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); Incoloy 825 (2.4858); Monel 400 (2.4360); Nickel 200 (2.4060, 2.4066); Titanium grade 2 (3.7035); Titanium grade 7 (3.7235) |
| wetted parts material | Stainless steel 1.4404 (316L); Stainless steel 1.4539 (904L); Stainless steel 1.4541 (321); Stainless steel 1.4571 (316Ti); PTFE lining; ECTFE coating; Gold plating; 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 7 (3.7235); Tantalum lining; PFA (perfluoroalkoxy) coating; PFA coating; Wikaramic; Titanium grade 11 (3.7225); Tantalum; Stainless steel 1.4435 (316L); Wikaramic ® coating; Wikaramic coating; Duplex 2205 (1.4462); Superduplex 2507 (1.4410) |
| sealing material | PTFE; Metal C spring, silver-plated stainless steel; Metal C spring, Inconel |
| process temp | -273 … 400 °C |

## Datasheet tables

| Model 990.10 | Standard | Option |
|---|---|---|
| Pressure range | 0 ... 250 bar [0 ... 3,600 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 D and ISO 15001 (< 220 mg/m 2 ) |
| Origin of wetted parts | International | EU, CH, USA |
| Connection to the measuring instrument | Axial adapter | Axial adapter with G½, G¼, ½NPTor ¼NPT(female) |
| Type of mounting | Direct mounting | ■ Capillary ■ Cooling element |
| Sealing | PTFE max. 260 °C [500 °F] | ■ Metal C spring, silver-plated stainless steel, max. 400 °C [752 °F] ■ Metal C spring, Inconel, 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 |
| 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 outer Ø20 ... 80 mm, steel (see data sheet AC 09.07) |

| 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|
| Standard | Male thread | Female thread |  |  |
|  | Standard | Option | Standard | Option |
| Following DIN ISO 228-1 | G½A | G¼A G⅜A G¾A G1A G1½A | G½ | G¼ G⅜ G¾ G1 |
| Following ASME B 1.20.1 | ½NPT | ¼NPT ⅜NPT ¾NPT 1 NPT 1½NPT | ½NPT | ¼NPT ⅜NPT ¾NPT 1 NPT |
| Following DIN 13-1 | M20 x 1.5 | - | M20 x 1.5 | - |
| Following ISO 7-1 | R½ | R¼,R⅜,R¾ | - | - |

| 1 | 2 | 3 | 4 |
|---|---|---|---|
| Upper body of diaphragm seal | Wetted parts | Maximum permissible process temperature ¹⁾ in °C [°F] |  |
| Lower body of diaphragm seal | Diaphragm |  |  |
| Stainless steel 1.4404 (316L) | Stainless steel 1.4404 (316L) | Stainless steel 1.4404 / 1.4435 (316L), standard version | 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) |  |  |
| PTFE lining ²⁾ | ECTFE coating | 150 [302] |  |
| PTFE lining ²⁾ | PFA (perfluoroalkoxy) coating, FDA | 260 [500] |  |
| PTFE lining ²⁾ | PFA (perfluoroalkoxy) coating, antistatic |  |  |
| - | Gold plating | 400 [752] |  |
| - | Wikaramic ® coating |  |  |
| Hastelloy C22 (2.4602) | Hastelloy C22 (2.4602) | 260 [500] |  |
| Hastelloy C276 (2.4819) | Hastelloy C276 (2.4819) | 400 [752] |  |
| Inconel 600 (2.4816) | Inconel 600 (2.4816) |  |  |
| Inconel 625 (2.4856) | Inconel 625 (2.4856) |  |  |
| Incoloy 825 (2.4858) | Incoloy 825 (2.4858) |  |  |
| Monel 400 (2.4360) | Monel 400 (2.4360) |  |  |
| Nickel 200 (2.4060, 2.4066) | Nickel 200 (2.4060, 2.4066) | 260 [500] |  |
| Titanium grade 2 (3.7035) | Titanium grade 2 (3.7035) | 150 [302] |  |
| Titanium grade 7 (3.7235) | Titanium grade 11 (3.7225) |  |  |
| Tantalum lining ²⁾ | Tantalum | 300 [572] |  |
| Stainless steel 1.4435 (316L) | Stainless steel 1.4435 (316L) | Stainless steel 1.4435 (316L) | 400 [752] |
| Stainless steel 1.4539 (904L) | Stainless steel 1.4539 (904L) | Stainless steel 1.4539 (904L) |  |
| Stainless steel 1.4541 (321) | Stainless steel 1.4541 (321) | Stainless steel 1.4541 (321) |  |
| Stainless steel 1.4571 (316Ti) | Stainless steel 1.4571 (316Ti) | Stainless steel 1.4571 (316Ti) |  |
| Duplex 2205 (1.4462) | Duplex 2205 (1.4462) | Duplex 2205 (1.4462) | 300 [572] |
| Superduplex 2507 (1.4410) | Superduplex 2507 (1.4410) | Superduplex 2507 (1.4410) |  |
| Hastelloy C22 (2.4602) | Hastelloy C22 (2.4602) | Hastelloy C22 (2.4602) | 400 [752] |
| Hastelloy C276 (2.4819) | Hastelloy C276 (2.4819) | Hastelloy C276 (2.4819) |  |
| Inconel 600 (2.4816) | Inconel 600 (2.4816) | Inconel 600 (2.4816) |  |
| Inconel 625 (2.4856) | Inconel 625 (2.4856) | Inconel 625 (2.4856) |  |
| Incoloy 825 (2.4558) | Incoloy 825 (2.4858) | Incoloy 825 (2.4858) |  |
| Monel 400 (2.4360) | Monel 400 (2.4360) | Monel 400 (2.4360) |  |
| Nickel 200 (2.4060, 2.4066) | Nickel 200 (2.4060, 2.4066) | Nickel 200 (2.4060, 2.4066) |  |
| Titanium grade 2 (3.7035) | Titanium grade 2 (3.7035) | Titanium grade 2 (3.7035) |  |
| Titanium grade 7 (3.7235) | Titanium grade 7 (3.7235) | Titanium grade 11 (3.7225) |  |

| Logo | Description | Country |
|---|---|---|
|  | EAC (option) Pressure equipment directive | Eurasian Economic Community |
| - | MTSCHS (option) Permission for commissioning | Kazakhstan |
| - | CRN Safety (e.g. electr. safety, overpressure, ...) | Canada |

| 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|
| G | Dimensions in mm[in] |  |  |  |
| h | h₁ | Mb | SW |  |
| G ¼ A | 13 [5.512] | 29.5 [1.161] | 52 [2.047] | 27 [1.063] |
| G⅜A | 16 [0.63] | 32.5 [1.28] |  |  |
| G ½ A | 20 [0.787] | 36.5 [1.437] |  |  |
| G ¾ A |  | 43 [1.693] | 41 [1.614] |  |
| G 1 A | 28 [1.102] | 51 [2.008] |  |  |
| G 1 ½ A |  | 58.5 [2.303] |  |  |
| ¼ NPT | 13 [5.512] | 29.5 [1.161] | 27 [1.063] |  |
| ⅜NPT | 15 [0.591] | 31.5 [1.24] |  |  |
| ½ NPT | 19 [0.748] | 35.5 [1.398] |  |  |
| ¾ NPT | 20 [0.787] | 36.5 [1.437] |  |  |
| 1 NPT | 25 [0.984] | 48 [1.98] | 41 [1.614] |  |
| 1 ½ NPT | 26 [1.024] | 56.5 [2.224] |  |  |
| M20 x 1.5 | 20 [0.787] | 36.5 [1.437] | 27 [1.063] |  |
| R ¼ | 15 [0.591] | 31.5 [1.28] |  |  |
| R ⅜ | 18 [0.709] | 34.5 [1.358] |  |  |
| R ½ | 19 [0.748] | 35.5 [1.398] |  |  |
| R ¾ | 20 [0.787] | 36.5 [1.437] |  |  |

| 1 | 2 | 3 | 4 | 5 |
|---|---|---|---|---|
| G | Dimensions in mm[in] |  |  |  |
|  | h | h 1 | Mb | SW |
| G ¼ | 10 [0.394] | 16.5 [0.65] | 52 [2.047] | 27 [1.063] |
| G⅜ | 12 [0.472] |  |  |  |
| G ½ | 14 [0.551] |  |  |  |
| G ¾ | 16 [0.63] | 22.5 [0.886] |  | 32 [1.26] |
| G 1 | 18 [0.709] | 24.5 [0.965] |  | 41 [1.614] |
| ¼ NPT | - | 16.5 [0.65] |  | 27 [1.063] |
| ⅜ NPT |  |  |  |  |
| ½ NPT |  |  |  |  |
| ¾ NPT |  | 20.5 [0.807] |  | 32 [1.26] |
| 1 NPT |  | 28.5 [1.122] |  | 41 [1.614] |
| M20 x 1.5 | 15.5 [0.61] | 18.5 [0.728] |  | 27 [1.063] |

| 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 |

## Documents

- [ds_ds9901_en_co_15b9eb](https://avigan.com.ua/wika/docs/wika/ds_ds9901_en_co.pdf) — PDF, 487 KB, en
- [ds_in0006_en_co_af8b01](https://avigan.com.ua/wika/docs/wika/ds_in0006_en_co.pdf) — PDF, 1239 KB, en