300-301 Threaded Diaphragm Seals
The Ashcroft® 300 and 301 threaded diaphragm seals protect pressure measuring instruments. Used when process compatibility is required, these are also applied when media exhibits high temperature or has the potential to clog an instrument connection. Ideal for satisfying many challenging applications.
Key Features:
- 316L stainless steel top housing (standard)
- Wide selection of diaphragm and lower housing materials
- Diaphragm (elastomer) clamped between top and bottom housings
- Flushing port (type 301) provides easy cleaning / flushing for process media prone to clogging
Applications:
Process Market:
Oil and Gas
Refineries
Chemical and Petrochemical
Water and Wastewater
Process Applications:
Oil and Gas Fracking
Biogas and Biodiesel
Specifications
Certifications & Approvals
Data Sheets & Instruction Manuals
Drawings & Product/Technical Information
Process Connection Size
1/4 to 1 NPT Male
1/4 to 1-1/2 NPT Female
Instrument Connection
¼ NPT Female, ½ NPT Female
Pressure Rating
up to 2,500 psi
Added Tolerance
±0.5% typical
Connection Style
300: Threaded
301: Threaded with flushing port
Certifications & Approvals
Instruction Manuals:
Drawings:
Product/Technical Information:
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Resources & Tools
Min/Max Guide
IMPORTANT! When selecting a diaphragm seal or isolation ring, refer to the Min/Max Guide (PI page) for compatibility with this gauge.
Materials Selector
Use the selector to review compatible wetted materials and requirements of your application.
Unit Converter
Need to convert measurement units? Check out our quick and easy tool to convert pressure, temperature and flow units of measure.
Product Information
To learn more about the technical details for options available, review our product information (PI) pages.
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Get a Quote
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Configure Part Number
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Contact Ashcroft
Ashcroft is a trusted source for pressure, temperature, and test instruments around the world. Learn more about how we can help you protect your people, processes, and profits.