WIKA Diaphragm Seal Systems for Reliable Pressure Measurement in Demanding Processes
WIKA diaphragm seal systems are engineered to protect pressure instruments from harsh process conditions while maintaining accurate, repeatable measurements. By isolating gauges, transmitters, or switches from corrosive, viscous, high-temperature, or sanitary media, these systems extend instrument life and improve measurement reliability.
Valin integrates and supports a wide range of WIKA diaphragm seal systems for industrial, hygienic, and high-purity applications—helping customers configure the right solution for their process, environment, and industry requirements.
Why WIKA?
Precision Engineering Backed by Global Measurement Expertise
WIKA diaphragm seal systems stand out due to their depth of configuration options, material expertise, and manufacturing precision.
Key differentiators include:
- Broad diaphragm designs: flush, threaded, flanged, hygienic, inline, and specialty geometries
- Extensive material selection: stainless steel, Hastelloy®, Monel®, tantalum, PTFE-coated options, and more
- Optimized fill fluids: selected for temperature stability, response time, and media compatibility
- Instrument compatibility: seamless integration with WIKA pressure gauges, transmitters, and switches
- Proven performance: designed to minimize temperature effects, hysteresis, and long-term drift
These features make WIKA diaphragm seal systems ideal for applications where measurement accuracy and durability are critical.
Features
Protect Pressure Instruments from Extreme Process Conditions
A diaphragm seal system is a precision assembly that separates the process media from the measuring instrument using a flexible diaphragm and a compatible fill fluid. Pressure is transmitted hydraulically to the instrument while the process media remains fully isolated.
Key Features:
- Protection from corrosive or aggressive media
- Reliable measurement of viscous, crystallizing, or solidifying fluids
- Isolation from extreme temperatures and pressure spikes
- Improved safety for operators and equipment
WIKA diaphragm seal systems are factory-assembled, evacuated, filled, and tested to ensure long-term stability and accuracy in critical process applications.
Applications
Designed for Harsh, Hygienic, and High-Accuracy Environments
WIKA diaphragm seal systems are used across a wide range of industries where standard pressure instruments alone are not sufficient.
Common applications include:
- Chemical and petrochemical processing
- Oil & gas production and refining
- Food & beverage processing (sanitary and CIP/SIP systems)
- Pharmaceutical and biotechnology manufacturing
- Power generation and energy systems
- Pulp, paper, and wastewater treatment
Whether the challenge is corrosion, clogging, high temperature, or strict hygiene requirements, WIKA diaphragm seal systems deliver dependable performance in real-world process conditions.
Q & A
Diaphragm Seal Systems Q & A
A diaphragm seal system isolates a pressure instrument from the process media while accurately transmitting pressure. This protects the instrument from corrosion, clogging, extreme temperatures, and aggressive fluids, improving measurement reliability and service life.
Diaphragm seals are recommended when the process media is corrosive, viscous, abrasive, crystallizing, toxic, or at extreme temperatures. They are also essential for sanitary applications where flush mounting and cleanability are required.
When properly specified and factory-assembled, WIKA diaphragm seal systems maintain excellent accuracy. Factors such as fill fluid selection, capillary length, and temperature conditions are carefully engineered to minimize measurement error.
Yes. WIKA diaphragm seal systems are fully compatible with analog gauges, pressure switches, and electronic pressure transmitters, including smart and digital models. Complete systems are matched and tested to ensure optimal performance.
Downloads
Download WIKA Diaphragm Monitoring for Diaphragm Seals Brochure
Talk to one of our process control experts today at (855) 737-4714 or fill out our online form to learn more.