Welded Diaphragm Seals 400-401 by Ashcroft

Specifications, certifications, and technical data for our diaphragm seals. Connection sizes range from 1/4 to 1 NPT male and 1/4 to 1 1/2 NPT female. Instrument connection is 1/4 NPT female. Pressure rating up to 4400 psi, optional 9000 psi. Additional tolerance is 0.5% typical. Connection styles are 400: Threaded and 401: Threaded with purge port. Certified by CRN and NACE. Technical data includes diagrams and guides for temperature error, fluid filling, and failure measures. Ensure compatibility with your manometer using our Mn/Mx guide. Explore compatible wet materials and convert units using our tools. Obtain detailed product information, request a quote, or configure a product number. Contact our expert for technical or general questions. Related products include the 1279 Duragauge A2X explosion-proof pressure transmitter.

• Product Specifications & Certifications: Technical Data & Instructions
• Technical Information & Product Details
• Process Connection Size: 1/4 to 1 NPT Male, 1/4 to 1 1/2 NPT Female
• Instrument Connection: 1/4 NPT Female
• Nominal Pressure: Up to 4400 psi, 9000 psi (OPTIONAL)
• Added Tolerance: 0.5% typical
• Connection Style: 400: Threaded, 401: Threaded with Purge Port
• Certifications & Approvals
• CRN
• NACE
• Technical Data Sheet: 400-401/500-501 Fully Welded Diaphragm Seals
• Diagram: Diaphragm Seal 75 400 04T, 75 400 02T, 50 400 04T, 50 400 02T, 25 400 04T, 25 400 02T, 10 400 04T, 10 400 02T
• Diaphragm Seal Resources: Temperature Error DS PI 14, High Temp Filling Fluids DS PI 55D, Failure Measures DS PI-04
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• IMPORTANT: Check Mn/Mx Guide (PI) for Manometer Compatibility