PRODUCT CONFIGURATOR
Threaded Seal
Compact, Reliable Protection for Pressure Measurement
Haygor Instrument & Company designs and manufactures threaded diaphragm seals for applications where space constraints, direct connections, and reliable measurement protection are critical. These seals provide a compact, cost-effective solution for isolating pressure instruments from harsh process conditions while maintaining accurate, stable readings.
What Is a Threaded Diaphragm Seal?
A threaded diaphragm seal is a pressure isolation device that connects directly to a process using threaded connections such as NPT, BSP, or other standard fittings. It separates the process media from the pressure instrument using a flexible diaphragm and fill fluid, allowing accurate measurement without exposing the instrument to damaging conditions.
Threaded diaphragm seals are commonly used with:
- Pressure gauges
- Pressure transmitters
- Switches
- Low-flow or compact process connections
When to Use a Threaded Diaphragm Seal?
Threaded diaphragm seals are ideal for applications where:
- Space is limited and a flanged connection is not practical
- Lower-pressure systems require direct threaded connections
- Cost-effective solutions are needed without sacrificing reliability
- Process connections are standardized around threaded fittings
- Frequent maintenance or replacement requires simpler installation
They are especially effective in systems where a compact footprint and straightforward installation are priorities.
Where Threaded Diaphragm Seals Are Used
Threaded diaphragm seals are widely used across industries, including:
- Oil & Gas (low-pressure lines and auxiliary systems)
- Chemical Processing
- Water & Wastewater
- Food & Beverage (sanitary threaded applications)
- Pulp & Paper
- General Industrial Applications
They are well suited for measuring pressure in environments involving:
- Corrosive media
- Slurries or viscous fluids
- Temperature-sensitive processes
- Contaminated or clog-prone systems
What a Threaded Diaphragm Seal Does
hreaded diaphragm seals serve several critical functions:
- Protect instrumentation from corrosive, abrasive, or hazardous media
- Maintain measurement accuracy by isolating process conditions
- Prevent clogging and contamination of pressure instruments
- Extend equipment life by reducing direct exposure to harsh environments
- Enable stable pressure transmission through fill fluid systems
By isolating the instrument while maintaining responsiveness, threaded diaphragm seals ensure reliable measurement in challenging conditions.
Why Choose Haygor Threaded Diaphragm Seals
Haygor diaphragm seals are engineered to deliver superior performance, reliability, and longevity compared to standard market offerings.
Precision Manufacturing
Each seal is machined and assembled with tight tolerances to ensure consistent diaphragm response and accurate pressure transmission.
Material Expertise
Haygor offers a wide range of materials—including 316L stainless steel, exotic alloys, and specialty coatings—to match the exact requirements of your process environment.
Application-Driven Design
We don’t offer one-size-fits-all solutions. Haygor works directly with customers to configure diaphragm seals based on pressure range, temperature, chemical compatibility, and installation constraints.
Enhanced Durability Options
With advanced surface treatments and coating technologies, Haygor seals can be optimized for:
- Abrasion resistance
- Corrosion protection
- Reduced buildup and fouling
- Extended service life
Proven Reliability
Haygor seals are built for long-term performance in real-world industrial conditions—helping reduce maintenance frequency, improve measurement consistency, and support overall system reliability.