Is the DIN 11851 Stainless Steel Welding End with GZ, Type DZS compatible with standard gasket materials for temperatures up to 150°C?

Yes — the DIN 11851 Stainless Steel Welding End with GZ, Type DZS is compatible with standard gasket materials for temperatures up to 150°C, provided an appropriate gasket material is selected. The fitting itself is stainless steel and rated for service across a broad temperature range; however, the allowable operating temperature is governed by the gasket. Common gasket materials used with DIN 11851 fittings that are suitable up to 150°C include PTFE (Teflon), many high‑performance elastomers (e.g., EPDM and some grades of FKM/Viton within their temperature limits), and compressed non‑asbestos sheet materials rated for elevated temperatures. When selecting a gasket, verify the material’s chemical compatibility with the process media and confirm its maximum continuous temperature rating (including any pressure/chemical effects). For critical applications, consult the gasket manufacturer’s datasheet or perform compatibility testing to ensure reliable sealing at 150°C.

Can the DIN 11851 Stainless Steel Welding End with GZ, Type DZS be used in CIP (clean-in-place) systems without compromising gasket integrity and hygiene?

Yes — the DIN 11851 Stainless Steel Welding End with GZ, Type DZS can be used in CIP (clean‑in‑place) systems without compromising gasket integrity and hygiene, provided a few conditions are met. Why it’s suitable: - Material and finish: The high‑quality stainless steel body and precisely finished inner surface (Ra 0.8 µm) support hygienic cleaning and minimize bacterial harborage. - Pressure and temperature capability: The fitting’s rated pressures (up to 40/25/16 bar depending on DN) permit robust operation under typical CIP flow and steam conditions. - Welded stub: The welded end ensures a smooth, permanent joint that avoids crevices. Key conditions to ensure gasket integrity and hygiene: - Gasket selection: Use CIP‑compatible gasketing materials (e.g., EPDM, FKM/Viton only if chemically and temperature compatible, or FDA/food‑grade elastomers specified for your CIP chemicals and temperatures). The operating temperature limits are determined by the gasket — choose a gasket rated for your CIP temperature and chemical exposure to avoid degradation. - Proper assembly: Ensure correct gasket compression and clamp torque to prevent extrusion or uneven seating that can create leaks or crevices. - Surface condition and finish maintenance: Maintain the Ra 0.8 µm finish and avoid damage or weld spatter near the sealing area that could trap soil or abrade gaskets. - CIP parameters: Validate CIP cycle (temperature, caustic/acid concentration, flow/pressure, contact time) against both fitting and gasket materials. Avoid cycles that exceed gasket chemical or thermal limits. - Inspection and maintenance: Regularly inspect gaskets for wear, hardening or swelling and replace per maintenance intervals to preserve hygiene. Conclusion: With appropriate food‑grade, CIP‑compatible gaskets, correct assembly and validated CIP parameters, the DIN 11851 Stainless Steel Welding End with GZ, Type DZS is suitable for CIP systems while maintaining gasket integrity and hygiene.

DIN 11851 Stainless Steel Welding End with GZ, Type DZS

All products, Hygienic stainless steel couplings/

Additional information

Material	SS – stainless steel
Standard length [m]	100

The DIN 11851 end fitting with external Rd thread and welding stub is a reliable and durable connection element designed for demanding applications in the food and chemical industries. Manufactured from high‑quality stainless steel, it ensures excellent resistance to corrosion and guarantees long service life even under intensive operating conditions. The precisely finished inner surface with a roughness of Ra 0.8 µm supports hygienic processes, making the fitting ideal for systems where cleanliness and product safety are critical. Depending on the nominal diameter, the connection withstands maximum working pressures of up to 40 bar (DN10–DN40), 25 bar (DN50–DN100), and 16 bar (DN125–DN150), providing flexibility for a wide range of installations. The operating temperature range is determined by the gasket material, allowing the fitting to be adapted to specific process requirements. Its robust design, standardized dimensions, and easy weldability make it a preferred choice for engineers and system designers seeking secure, efficient, and hygienic connections in pipelines.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
NH-DZS-010	End. DIN 11851 for connection DN10, Rd 28x1/8", 13x10 mm	-	40	In stock	Enquiry
NH-DZS-015	End. DIN 11851 for connection DN15, Rd 34x1/8", 19x16 mm	-	40	In stock	Enquiry
NH-DZS-020	End. DIN 11851 for connection DN20, thread 44x1/6", 23x20 mm	-	40	In stock	Enquiry
NH-DZS-025	End. DIN 11851 for connection DN25, thread 52x1/6", 29x26 mm	-	40	In stock	Enquiry
NH-DZS-032	End. DIN 11851 for connection DN32, thread 58x1/6", 35x32 mm	-	40	In stock	Enquiry
NH-DZS-040	End. DIN 11851 for connection DN40, thread 65x1/6", 41x38 mm	-	40	In stock	Enquiry
NH-DZS-050	End. DIN 11851 for connection DN50, Rd 78x1/6", 53x50 mm	-	25	In stock	Enquiry
NH-DZS-065	End. DIN 11851 for connection DN65, thread 95x1/6", 70x66 mm	-	25	In stock	Enquiry
NH-DZS-080	End. DIN 11851 for connection DN80, Rd 110x1/4", 85x81 mm	-	25	In stock	Enquiry
NH-DZS-100	End. DIN 11851 for connection DN100, Rd 130x1/4", 104x100 mm	-	25	In stock	Enquiry
NH-DZS-125	End. DIN 11851 for connection DN125, Rd 160x1/4", 129x125 mm	-	16	In stock	Enquiry
NH-DZS-150	End. DIN 11851 for connection DN150, Rd 190x1/4", 154x150 mm	-	16	In stock	Enquiry

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The DIN 11851 end fitting with external Rd thread and welding stub is a reliable and durable connection element designed for demanding applications in the food and chemical industries. Manufactured from high‑quality stainless steel, it ensures excellent resistance to corrosion and guarantees long service life even under intensive operating conditions. The precisely finished inner surface with a roughness of Ra 0.8 µm supports hygienic processes, making the fitting ideal for systems where cleanliness and product safety are critical. Depending on the nominal diameter, the connection withstands maximum working pressures of up to 40 bar (DN10–DN40), 25 bar (DN50–DN100), and 16 bar (DN125–DN150), providing flexibility for a wide range of installations. The operating temperature range is determined by the gasket material, allowing the fitting to be adapted to specific process requirements. Its robust design, standardized dimensions, and easy weldability make it a preferred choice for engineers and system designers seeking secure, efficient, and hygienic connections in pipelines.