the best choicefor Ultra High Purity (UHP) and High Purity (HP) applications
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for Ultra High Purity (UHP) and High Purity (HP) applications

Materials: stainless steel 1.4404 / 1.4571 / Nitronic® Temperature range: -70°C to +260°C Lubricant-free due to coatings (silver or PTFE) Small dimensions with radial mounting Easy installation without seals Ultrasonic cleaning, vacuum-packed, double packed

• Union nut: Nitronic®60, with leakage test holes • Weld-on nipples: SS 1.4404 (AISI 316 L), electropolished, sealing surface silver- or PTFE-coated • Bodies: SS 1.4404 (AISI 316 L), electropolished • Weld-on elbow/tee: SS 1.4571 (AISI 316 Ti), electropolished • Flat surfaces, threads and bore holes: rolled • Ultrasonic cleaning, vacuum-packed and double packed Features • Union nut: lubricant-free due to the Nitronic® material • Thread: abrasion-free as without coating • Sealing surfaces: virtually abrasion-free coating • Dead space free design and therefore no tendency for contamination •...

Weld-on nipple silver-coated (1.4404) Type -d Mat.-Nr. D L x e Weld-on nipple PTFE-coated (1.4404) Type -d Mat.-Nr. D L x e

Union body for weld-on union (1.4404) Type -d Mat.-Nr. SW L x e M = corresponds to the thread of the SEL 50020 UHP union nut Union body for male adaptor union, with edge seal (1.4404) Type -d -G Mat.-Nr. SW L z e M = corresponds to the thread of the SEL 50020 UHP union nut Weld-on elbow (1.4571) Type -d Mat.-Nr. SW L x e Weld-on tee (1.4571) Type -d Mat.-Nr. SW L x e

• Union nut: SS 1.4571 (AISI 316 Ti), internal silver-plating • Compression ferrules: SS 1.4571 (AISI 316 Ti), sealing surface silver- or PTFE-coated • Body: SS 1.4404/1.4571 (AISI 316 L/316 Ti), electropolished • Ultrasonic cleaning, vacuum-packed and double packed Features • Lubricant-free stainless steel union due to coating • Low dead space design • Low-abrasion coating • Traceability upon request • Proven SERTO system - radial mounting/dismounting Technical details • Installation: ~ 1 % turns / approx. 20 repeat assemblies • Internal roughness (iRa): < 0.8 |jm • Leakage rate: < 10'9...

Union nut with internal silver-plating (1.4571) Type -d Mat.-Nr. M SW L Compression ferrule silver-coated (1.4571) Type -d Mat.-Nr. D L z e Compression ferrule PTFE-coated (1.4571) Type -d Mat.-Nr. D L z e Union body for male adaptor union, with edge seal (1.4404/1.4571) Type -d -G Mat.-Nr. SW L z e M = corresponds to the thread of the SEL 50020 SC union nut

Typical areas for SERTO SELECTION • Vacuum applications • Dosing systems • Laser technology • Analysis technology • Food technology • Sterilisation systems • Optical systems • Coating technology The SERTO SELECTION is of interest for you if • the cleanliness of the components is extremely important to you. • you require lubricant-free stainless steel unions. • your application requires tightness greater than 10-9 mbar × l/s. • you use orbitally welded components. • you use internally electropolished tubes. • you would like to refrain from using separate sealing components. SERTO SELECTION...

Radial union principle The SERTO SELECTION union consists of three components: a union body, the weld-on nipple (UHP) or the compression ferrule (HP) and the union nut. The flat sealing surfaces are pressed against each other when the nut is installed. You can therefore also benefit from the radial mounting/dismounting in this range of products. The modern orbital welding system is used to connect the tubes with the UHP components. Lubricant-free connections The flat sealing surfaces of the weld-on nipples (UHP) and compression ferrules (HP) are coated with silver or PTFE. This coating acts...

Cleaning system All parts undergo a multi-stage process in several cleaning and rinsing baths in the cleaning system. They are placed in special racks for protection and to ensure flawless sealing surfaces. The cleaning process corresponds to the SERTO standard no. XDC-AA140-0158. In the adjacent ISO Class 8 certified clean room, the SERTO SELECTION components are vacuum-packed individually and double packed in plastic bags. Delivery Lint-free plastic boxes are used for the outer packaging.

Bending and welding tubes Bending excellence The use of different bending procedures and techniques, the ultra-modern 10-axis bending centres and many years of experience make it possible to bend virtually all geometries, and that includes the bending of internally electropolished stainless steel tubes. The recommended bending radius for electropolished tubes is ≥ 2d. Orbital welding excellence Orbital welding of tubes or of entire assemblies is also part of the range of in-house services provided by SERTO. The welding is carried out automatically with a supply of added inert gas with...

Cleaning and assembling tubes The benefits of bended tubes In the test laboratory, bended tubes were compared with tubes equipped with welded fittings. Bended tubes have fewer potential leakage areas and exhibit a reduced drop in pressure in the media flow. Furthermore, they also provide clear cost benefits compared to welded tubes as fewer parts are needed. An external testing laboratory has confirmed that there is no increased susceptibility to corrosion in the bending area. Cleaning Pre-assembled and ready-to-install tubes are flow cleaned. Application-specific formulations define the...

All data are for the purpose of providing technical information and do not constitute part of any warranty. Technical data and details subject to change. Please also refer to our general terms and conditions of sale. CH: SERTO AG, CH-8500 Frauenfeld, Tel. +41 52 368 11 11, info-ch@serto.com D: SERTO GmbH, D-34123 Kassel, Tel. +49 561 58004-0, info-de@serto.com F: SERTO S.A.R.L., F-77164 Ferrières en Brie, Tél. +33 1 64 30 38 38, info-fr@serto.com I: SERTO Italiana S.r.l., I-24030 Brembate di Sopra (BG), Tel. +39 035 333 000, info-it@serto.com www.serto.com