# Diaphragm seal with flange connection — H990.35

> Diaphragm seal with flange connection, cell-type with extended diaphragm for aggressive, viscous, crystallising or hot media in chemical and petrochemical industries.

- Catalog code: h990_35
- Model: H990.35
- Category: Pressure measurement › Diaphragm seals
- Product page: https://avigan.com.ua/wika/en/products/h990_35
- Price: on request
- Supplier: AVIGAN (TOV VIKA Prylad), official WIKA partner in Ukraine

## Overview

The model 990.35 cell-type diaphragm seal with extended diaphragm can be used in thick-walled or insulated locations in pipeline and vessel construction.

## Applications

- Aggressive, highly viscous, crystallising or hot media
- Chemical and petrochemical process industry
- Thick-walled or insulated pipelines and vessels
- High-pressure applications

## 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

## Specifications

| Parameter | Value |
|---|---|
| model | 990.35 |
| product family | 990 |
| short description | Diaphragm seal with flange connection, cell-type with extended diaphragm for aggressive, viscous, crystallising or hot media in chemical and petrochemical industries. |
| subcategory | Diaphragm seal |
| certifications | EAC; CRN; MTSCHS |
| languages in datasheet | en |
| process connections | DIN EN 1092-1; ASME B16.5; GOST 33259; DIN EN 1092-1 DN 50, DN 80, DN 100, DN 125; ASME B16.5 2", 3", 4", 5"; GOST 33259 DN 25, DN 40, DN 50; DIN EN 1092-1 DN 50 Form B1; DIN EN 1092-1 DN 80 Form A; DIN EN 1092-1 DN 100 Form C (tongue); DIN EN 1092-1 DN 125 Form D (groove); ASME B16.5 2" RF 125 ... 250 AA; ASME B16.5 3" Flat face; ASME B16.5 4" Small tongue; ASME B16.5 5" Small male face; ASME B16.5 5" Small groove; GOST 33259 DN 25 Type B; GOST 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 100; GOST 33259 DN 125 |
| 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); Tantalum; Stainless steel 1.4435 (316L); Titanium grade 7 (3.7235); Titanium grade 11 (3.7225); 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; Wikaramic® coating; Gold plating® coating; Wikaramic; PFA (perfluoroalkoxy) coating; Stainless steel 1.4404/1.4435 (316L); Duplex 2205 (1.4462); Superduplex (1.4410) |
| 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; RJF groove; Type B; Type A (flat face); Type C (tongue); Type D (groove); Type E (spigot, male face); Type F (recess, female face) |
| process temp | -273 … 400 °C |

## Datasheet tables

| 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) |

| 1 | 2 | 3 | 4 |
|---|---|---|---|
| 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 |

| 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|
| 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] |

| 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|
| 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] |

| 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|
| 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 |

## Documents

- [ds_ds9930_en_co_cfd23d](https://avigan.com.ua/wika/docs/wika/ds_ds9930_en_co.pdf) — PDF, 583 KB, en
- [ds_in0006_en_co_af8b01](https://avigan.com.ua/wika/docs/wika/ds_in0006_en_co.pdf) — PDF, 1239 KB, en

## Configurator

This product has an interactive configurator on its product page.

```
H990.35- C1 ZZZZ
```