Is the DIN 11851 end under nut, for welding, stainless steel, type DWS compatible with food-grade gaskets and Ra 0.8 Âµm in the bore?

Yes. The DIN 11851 end under nut, for welding, stainless steel, type DWS Format described is compatible with foodâgrade gaskets and a bore surface finish of Ra 0.8 Âµm. The description explicitly states Ra (in the hole) 0.8 Âµm and suitability for the food and chemical industry, stainless steel construction, and standard gasketed connection design per DIN 11851. Ensure gasket material selection and temperature limits match your process (operating temperature depends on gasket type) and that the assembly is used within the stated maximum allowable working pressures (40 bar for DN10âDN40, 25 bar for DN50âDN100, 16 bar for DN125âDN150).

Can the DIN 11851 end for nut, for welding, stainless steel, type DWS meet EHEDG and FDA requirements for food and chemical use?

DIN 11851 end under nut, for welding, stainless steel, type DWS Format can potentially meet FDA and EHEDG requirements but compliance depends on specific details beyond the standard description. Positives: stainless steel construction and Ra 0.8 Âµm (in the bore) are favorable for hygienic surface finish; pressure and temperature ratings are suitable for many food/chemical applications. Conditions to verify for EHEDG/FDA compliance: 1) Gasket material must be FDA-compliant (food-grade) and compatible with cleaning/sterilization temperatures and chemicals. 2) Joint design must allow hygienic cleaning-no crevices/traps per EHEDG design criteria; weld quality must be smooth and sanitary. 3) Traceability and material certification (EN/ASTM grades) and validation for intended process. 4) Cleanability validation and documentation of surface roughness across all contact areas (external and internal). If these are satisfied and documented, the fitting can meet EHEDG and FDA requirements.

Does the DIN 11851 end under nut, for welding, stainless steel, type DWS support CIP/SIP processes at Ra 0.8 Âµm?

DIN 11851 end under nut, for welding, stainless steel, type DWS Format: Yes. based on the provided description, this DIN 11851 end under nut, for welding, stainless steel, type DWS Format supports CIP/SIP processes at Ra 0.8 Âµm. Rationale: the part is explicitly described for use in the food and chemical industry, has surface roughness Ra 0.8 Âµm in the bore (meets common hygienic requirements for CIP/SIP), is stainless steel and designed for welded installation (stub for welding) and standard mechanical ratings (maximum allowable working pressures per DN). Final suitability depends on the whole assembly (gasket material, welding quality, system design and validation, temperature limits tied to gasket material), but the flange itself as specified is suitable for CIP/SIP at Ra 0.8 Âµm.

DIN 11851 end under nut, for welding, stainless steel, type DWS

All products, Hygienic stainless steel couplings/

Additional information

Material	SS – stainless steel

DIN 11851 end for nut, with a stub for welding, Ra (in the hole) 0.8 µm, for use in the food and chemical industry. Maximum allowable working pressure (for the connection itself according to DIN 11851): 40 bar (DN10÷DN40), 25 bar (DN50÷DN100), 16 bar (DN125÷DN150). Operating temperature: depending on the type of material used for the gasket. Material: stainless steel.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
NH-DWS-010	End. DIN 11851 for welding DN10, 13x10 mm	-	40	In stock	Enquiry
NH-DWS-015	End. DIN 11851 for welding DN15, 19x16 mm	-	40	In stock	Enquiry
NH-DWS-020	End. DIN 11851 for welding DN20, 23x20 mm	-	40	In stock	Enquiry
NH-DWS-025	End. DIN 11851 for welding DN25, 29x26 mm	-	40	In stock	Enquiry
NH-DWS-032	End. DIN 11851 for welding DN32, 35x32 mm	-	40	In stock	Enquiry
NH-DWS-040	End. DIN 11851 for welding DN40, 41x38 mm	-	40	In stock	Enquiry
NH-DWS-050	End. DIN 11851 for welding DN50, 53x50 mm	-	25	In stock	Enquiry
NH-DWS-065	End. DIN 11851 for welding DN65, 70x66 mm	-	25	In stock	Enquiry
NH-DWS-080	End. DIN 11851 for welding DN80, 85x81 mm	-	25	In stock	Enquiry
NH-DWS-100	End. DIN 11851 for welding DN100, 104x100 mm	-	25	In stock	Enquiry
NH-DWS-125	End. DIN 11851 for welding DN125, 129x125 mm	-	16	In stock	Enquiry
NH-DWS-150	End. DIN 11851 for welding DN150, 154x150 mm	-	16	In stock	Enquiry

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DIN 11851 end for nut, with a stub for welding, Ra (in the hole) 0.8 µm, for use in the food and chemical industry. Maximum allowable working pressure (for the connection itself according to DIN 11851): 40 bar (DN10÷DN40), 25 bar (DN50÷DN100), 16 bar (DN125÷DN150). Operating temperature: depending on the type of material used for the gasket. Material: stainless steel.