WIKA 990.27 Flanged Diaphragm Seal
Model 990.27 is a flange-connected, flush welded diaphragm seal launched by WIKA of Germany. It is designed to isolate corrosive, highly viscous, crystallizable or high-temperature media and protect pressure measuring instruments such as pressure gauges, transmitters and switches.

Model 990.27 is a flange-connected, flush welded diaphragm seal launched by WIKA of Germany. It is designed to isolate corrosive, highly viscous, crystallizable or high-temperature media and protect pressure measuring instruments such as pressure gauges, transmitters and switches.
- Direct mounting
- Instruments (pressure gauges / transmitters) are screwed directly onto the seal, featuring a simple and compact design. WIKA Saudi Arabia LLC.
- Model series
- 990.27
- Technical feature
- Flange with flush welded diaphragm.
- Technical feature
- Common standards and nominal widths available.
990.27
Request a quoteAbout this product
Product Description The 990.27 diaphragm seal with flush flange connection is assembled from the upper part of the diaphragm seal and the wetted parts (sealing surface and diaphragm). This diaphragm sealing model has been optimized for applications in the chemical, petrochemical, and oil and gas industries, allowing for various sizes to be provided according to common market standards. Through a large number of possible combinations and with the help of individual inspection of operating conditions, ensure that the 990.27 diaphragm sealing system can find the ideal customer solution. Special Features Flange with flush welded diaphragm. Common standards and nominal widths available. Wide variety of different materials and material combinations. Installation Methods Direct mounting: Instruments (pressure gauges / transmitters) are screwed directly onto the seal, featuring a simple and compact design. WIKA Saudi Arabia LLC. Cooling element: Install heat sinks for high-temperature environments (>150°C) to protect instruments. WIKA Saudi Arabia LLC. Capillary remote transmission: The instrument is installed away from the measuring point, suitable for areas with vibration, high temperature or explosion hazards. Applications Aggressive, highly viscous, crystallising or hot media. Process industry. Machine building and automation. For quotation, send the complete order code, quantity and operating conditions. Specifications and available options depend on the ordered configuration.
Technical information
| Model series | 990.27 |
|---|---|
| Brand | WIKA |
| Technical feature | Flange with flush welded diaphragm. |
| Technical feature | Common standards and nominal widths available. |
| Technical feature | Wide variety of different materials and material combinations. |
| Direct mounting | Instruments (pressure gauges / transmitters) are screwed directly onto the seal, featuring a simple and compact design. WIKA Saudi Arabia LLC. |
| Cooling element | Install heat sinks for high-temperature environments (>150°C) to protect instruments. WIKA Saudi Arabia LLC. |
| Capillary remote transmission | The instrument is installed away from the measuring point, suitable for areas with vibration, high temperature or explosion hazards. |
| Technical feature | Aggressive, highly viscous, crystallising or hot media. |
| Technical feature | Process industry. |
| Technical feature | Machine building and automation. |
Downloads & files
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Before you request a quote
How do I request a quote for 990.27?
Send the full model or order code, quantity and delivery country. For a replacement, include the existing instrument specifications; for a new installation, use the selection checklist below.
Where can I find technical documents?
Published files are listed in Downloads & files. Check that the document covers your selected configuration. Request any additional drawing or manual with your inquiry.
How are price and delivery confirmed?
Price and delivery depend on the final configuration, quantity and destination. Request a written quotation for your project; this page does not confirm stock or a delivery date.
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