{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"7MF9401-7AC","brand":"Siemens","brandSlug":"siemens","productSlug":"7MF9401-7AC","canonicalUrl":"https://aoctrl.com/siemens/7MF9401-7AC","factsUrl":"https://aoctrl.com/api/mcp/products/7MF9401-7AC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 7MF9401-7AC, Shut-off Valve Design B per DIN 16270, max 400 bar operating pressure, material 1.4571 stainless steel, without test collar, with connection collar, PED Art. 3.3 SEP for gas/liquids group 1.","salesMarkdown":"The Siemens 7MF9401-7AC is a shut-off valve per DIN 16270, Design B, without test collar and with connection collar. It is rated for a maximum operating pressure of 400 bar and constructed from material number 1.4571 stainless steel. The valve falls under the Pressure Equipment Directive Article 3.3 SEP, applicable for gas group 1 and liquids group 1. ## Design and application This valve follows DIN 16270, DIN 16271, and DIN 16272 standards — the common dimensional and design specs for shut-off valves in pressure transmitter manifolds and impulse lines. The 1.4571 stainless steel (316Ti) handles corrosive process media and high-temperature steam service. The 400 bar rating covers most industrial hydraulic and pneumatic isolation points upstream of the pressure transmitter. The PED Article 3.3 SEP classification means sound engineering practice applies rather than full conformity assessment — no CE marking, but the valve is still designed for gas group 1 (flammable, toxic) and liquids group 1 service. This is common for valves in this pressure class where the risk is managed by the system designer. ## Procurement and lifecycle Group code R3P0 and product group 4778 are Siemens internal classification fields used for catalog sorting and ERP filtering. They do not affect physical fit or function but may be needed for ordering through Siemens channels or matching to legacy BOM entries.","metaTitle":"Siemens 7MF9401-7AC Shut-off Valve, DIN 16270, 400 bar, 1.4571","metaDescription":"Siemens 7MF9401-7AC shut-off valve per DIN 16270, design B, max 400 bar operating pressure, 1.4571 stainless steel, PED Art. 3.3 SEP for gas/liquids group 1. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Pressure Transmitters"],"specifications":{"Group Code":"R3P0","Product Group":"4778","Product class":"C: products manufactured / produced to order, which cannot be reused or re-utilized or be returned against credit.","Quantity Unit":"1 Piece","Product Family":"Shut-off valves acc. to DIN 16270, DIN 16271 and DIN 16272","lifecycle_stage":"mature","Packaging Quantity":"1","Export Control Regulations":"AL : N / ECCN : N","Packaging dimensions (L x W x H)":"Not available","Compliance with the substance restrictions according to RoHS directive":"Since: 01-07-06","REACH Art. 33 Duty to inform according to the current list of candidates":"Reach Information"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/7MF9401-7AC?tree=CatalogTree","alternativesUrl":"https://aoctrl.com/api/mcp/products/7MF9401-7AC/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does Siemens provide for 7MF9401-7AC?","answer":"RoHS compliance since July 1, 2006, and a REACH Article 33 candidate list declaration are available. Export controls are AL: N / ECCN: N."},{"question":"What is the 7MF9401-7AC group code and product group?","answer":"Group code is R3P0 and product group is 4778 — Siemens internal classification fields for catalog and ERP use."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/7MF9401-7AC","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/7MF9401-7AC when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:21:01.794Z","lastPublished":"2026-09-02T08:21:01.794Z","indexable":true}}