2920 BURKERT | Alldatasheet
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Technical content
Visit product website DATA SHEET Type 2101 Pneumatically operated 2/2-way globe valve ELEMENT for decentralised automation Type 2000 Pneumatically operated 2/2-way angle seat valve CLASSIC Type 2921 Manually operated 2/2-way globe valve Type 2961 Manually operated 2-way globe control valve Type 8801 ELEMENT on/off valve systems with decentralised automation – overview Type 8840 Modular process valve cluster – distribution and collecting Standard | EU | en | 2024 - 01 - 15 | 00 Manually operated 2/2-way angle seat valve
- High flow rates Long service life Robust actuator with optional stroke limitation and locking Flow-optimised stainless steel valve body with socket, clamp or welded connection The Type 2920 angle seat valve consists of a manual actuator and a 2-way body made of high-quality stainless steel. With a flow-optimised valve body, the manually operated valve offers diverse usage options to shut off both neutral and aggressive gaseous and liquid media. The tried-and-tested self-adjusting spindle seal guarantees optimal tightness and therefore enables low-maintenance operation, even at high switching cycles. Depending on the application, the soft PTFE or PEEK seal ensures a reliable valve seat seal, even under challenging operating conditions. The actuator is made of high-quality plastic and is suitable for use in demanding environments. It possesses a visual position indicator and can be optionally equipped with stroke limitation and locking. Product variants described in the data sheet may differ from the product presentation and description. Type description Can be combined with Type 2920 © Christian Bürkert GmbH & Co. KG, Subject to alteration
2 | 14Visit product website Table of contents 1. General technical data 3 Approvals and conformities 2.2. Conformity 2.3. Standards 2.4. Explosion protection 2.5. Drinking water 2.6. Foods and beverages/Hygiene 3. Materials 6 3.2. Material specifications 4. Dimensions 7 4.2. Body with threaded connection 4.3. 4.4. Body with clamp connection 5. Performance specifications 11 Overview of fluidic data for flow below seat (for liquids, steam and gases) 5.2. Operating limits Operating limits for medium temperature and operating pressure Operating limits for optional versions 6. Product design and assembly 13 7. Ordering information 14 7.2. Bürkert product filter 7.3. Bürkert Product Enquiry Form
3 | 14Visit product website 1. General technical data Product properties Dimensions Further information can be found in chapter “4. Dimensions” on page 7 Material Further information can be found in chapter “3. Materials” on page 6 Design Angle seat valve on/off Nominal diameter DN 10…DN 80, NPS ⅜…NPS 3 Flow direction Flow to open (below seat) Performance data Operating pressure 0 bar(g)…25 bar(g), see “5.1. Fluidic data” on page 11 Nominal pressure PN 25 (DIN EN 1333), Class 150 (DIN EN 1759) Seat leakage Leakage rate A (according to DIN EN 12266 1), seat seal PTFE and PEEK, test medium air, see “5.1. Fluidic data” on page KV value 5 m³/h…90 m³/h, see “5.1. Fluidic data” on page 11 Medium data Process medium Steam, neutral gases, water, alcohol, oils, fuels, hydraulic fluids, salt solutions, alkalis, organic solvents Medium temperature - °C…230 °C, see “5.2. Operating limits” on page Viscosity Max. 600 mm²/s Process/Port connection & communication Port connection Threaded connection G (EN ISO 228 Rc (ISO /DIN EN 10226 NPT (ASME B 1.20.1) Welded connection DIN EN ISO 1127/ISO 4200/DIN 11866 B DIN 11850 2/DIN 11866 A ASME BPE/DIN 11866 C SMS 3008 Clamp connection DIN 32676 B (pipe ISO 4200) DIN 32676 A (pipe DIN 11850 ASME BPE Approvals and conformities Further information can be found in chapter “2. Approvals and conformities” on page 4 Environment and installation Ambient temperature - °C…+ Installation position As required, preferably with actuator in upright position
4 | 14Visit product website 2. Approvals and conformities 2.1. General notes
- The approvals and conformities listed below must be stated when making enquiries. This is the only way to ensure that the pro duct complies with all required specifications. Not all available versions can be supplied with the below mentioned approvals or conformities. 2.2. Conformity In accordance with the Declaration of Conformity, the product is compliant with the EU Directives. This includes the following directives: Pressure Equipment Directive 2014/68/EU 2.3. Standards The applied standards which are used to demonstrate compliance with the EU Directives are listed in the EU-Type Examination Certificate and/or the EU Declaration of Conformity. 2.4. Explosion protection Approval Description Optional: Explosion protection As a category 2 device suitable for zone 1/21 and zone 2/22 (optional). ATEX: EPS 18 ATEX 2 008 X II 2G Ex h IIC T4…T2 Gb II 2D Ex h IIIC T135 °C…T300 °C Db IECEx: IECEx EPS 18.0007 X Ex h IIC T4…T2 Gb Ex h IIIC T135 °C…T300 °C Db Temperature class T2 T3 T4 Permissible surface temperature + 300 °C + 200 °C + 135 Ambient temperature Restrictions from the device 10…+ °C - 10…+ °C - 10…+ Maximum medium temperature Restrictions from the device 230 °C + 185 °C + 125 2.5. Drinking water Conformity Description Suitable for use in drinking water applications The materials comply with the assessment principles (UBA) for materials in contact with drinking water (TrinkwasserV). Stainless steel body PF39: Suitable for products with medium temperature up to 85 °C (hot water)
5 | 14Visit product website 2.6. Foods and beverages/Hygiene Conformity Description FDA FDA – Code of Federal Regulations (valid for the variable code PL02) All wetted materials are compliant with the Code of Federal Regulations published by the FDA (Food and Drug Administration, USA) according to the manufacturer‘s declaration. EC Regulation 1935/2004 of the European Parliament and of the Council (valid for the variable code PL01, PL02) All wetted materials are compliant with EC Regulation 1935/2004/EC according to the manufacturer‘s declaration.
6 | 14Visit product website 3. Materials 3.1. Bürkert resistApp Bürkert resistApp – Chemical resistance chart You want to ensure the reliability and durability of the materials in your individual application case? Verify your combination of media and materials on our website or in our resistApp. Start chemical resistance check 3.2. Material specifications No. Element Material
1 Cover Polyamide (PA)
2 Screw Stainless steel 1.4301 3 Lock pin Stainless steel 1.4305
4 Handwheel Polyphenylene sulfide (PPS)
5 Optical position
Polyamide (PA)
6 Spindle seal PTFE V-rings (filled), with spring
7 Spindle Stainless steel 1.4401 or 1.4404 8 Spindle guide Stainless steel 1.4404 (316L), PTFE filled
9 Body seal Graphite
10 Swivel plate Stainless steel 1.4401
11 Seat seal (optional) PTFE or PEEK
12 Valve body Stainless steel 316L/CF3M
7 | 14Visit product website 4. Dimensions 4.1. Actuator Note: Dimensions in mm Position opened 3,8 Nominal connection size (pipe) Handwheel diameter Ø B1 1.) H1 1.) [DN] [NPS] [mm] 15 ½ 45 (S) 148 148 20 ¾ 45 (S) 154 154 25 1 45 (S) 163 163 32 1 ¼ 45 (S) 171 171 40 1 ½ 45 50 2 110 (M) 241 241 65 2 ½ 160 (L) 290 290 80 3 160 (L) 308 310 1.) The dimensions for B and H are maximum dimensions and may be up to 6 mm less, depending on the nominal diamenter and standard. 2.) At an operating pressure of less than 16 bar
8 | 14Visit product website 4.2. Body with threaded connection Note: Dimensions in mm D CME SW LM Nominal diameter (pipe) G (DIN ISO 228 - 1), NPT (ASME B 1.20.1), Rc (ISO7 - 1) D E CM LM SW [DN] [NPS] [G] [NPT] [Rc] 15 ½ 14 13.7 13.2 24 65 27 20 ¾ 16 14.0 14.5 27 75 34 25 1 18 16.8 16.8 29.5 90 41 32 1¼ 16 17.3 19.1 36 110 50 40 1½ 18 17.3 19.1 35 120 55 50 2 24 17.6 23.4 45 150 70 65 2½ 26 23.7 26.7 57 185 85 80 3 28 – – 71 220 100
9 | 14Visit product website 4.3. Body with welded connection Note: Dimensions in mm CS DS LS WS ES Nominal diameter (pipe) DIN EN ISO 1127 ISO 4200 DIN 11866 B DIN 11850 2 DIN 11866 A [DN] ES CS LS Ø DS WS ES CS LS Ø DS WS 15 19 34 100 21.3 1.6 19 34 100 19 1.5 20 20 39 115 26.9 1.6 20 39 115 23 1.5 25 26 43 130 33.7 2.0 26 43 130 29 1.5 32 26 45 145 42.4 2.0 26 45 145 35 1.5 40 26 49 160 48.3 2.0 26 49 160 41 1.5 50 26 50 175 60.3 2.0 26 50 175 53 1.5 65 26 50 210 76.1 2.3 26 50 210 70 2 Nominal diameter (pipe) ASME BPE DIN 11866 C [NPS] ES CS LS Ø DS WS ½ 30 46 135 12.7 1.65 ¾ 30 52 145 19.05 1.65 1 30 51 152 25.4 1.65 1½ 30 60 182 38.1 1.65 2 30 64 210 50.8 1.65 2½ 26 56 230 63.5 1.65
10 | 14Visit product website 4.4. Body with clamp connection Note: Dimensions in mm D1C D2C SC LC CC Nominal diameter (pipe) Clamp: DIN 32676 B Pipe: DIN EN ISO 1127 ISO 4200 DIN 11866 B Clamp: DIN 32676 A (DN 15, similar to DIN 32676 B) Pipe: DIN 11850 2 DIN 11866 A DN LC CC Ø D1 C Ø D2 C SC LC CC Ø D1 C Ø D2 C SC Nominal diameter (pipe) Clamp: ASME BPE Pipe: ASME BPE DIN 11866 C NPS LC CC Ø D1 C Ø D2 C SC ½ 130 49.0 25.0 12.7 1.65 ¾ 150 56.5 25.0 19.05 1.65 1 160 58.0 50.5 25.4 1.65 1½ 200 69.0 50.5 38.1 1.65 2 230 77.5 64.0 50.8 1.65
11 | 14Visit product website 5. Performance specifications 5.1. Fluidic data Overview of fluidic data for flow below seat (for liquids, steam and gases) Note: KV value [m3/h]: measurement with water according to DIN EN 60534 - 2 - 4 Seat leakage leakage rate A according to DIN EN 12266 See “7.2. Bürkert product filter” on page Nominal diameter (pipe) Hand wheel dia meter Ø Operating pressure max. KVS value Valve seat seal PTFE PEEK [DN] [NPS] [mm] [bar(g)] [bar(g)] [m3/h] ASME BPE (12.7 mm x 1.65 15 ½ 45 (S) 25 20 1.6 All standards 15 ½ 45 (S) 25 25 5.0 20 ¾ 45 (S) 25 25 10.0 25 1 45 (S) 25 25 16.0 32 1 ¼ 45 (S) 25 25 23.0 40 1 ½ 45 50 2 110 (M) 25 20 53 65 2 ½ 160 (L) 24 14 90 80 3 160 (L) 16 14 150 1.) At an operating pressure of less than 16 bar
12 | 14Visit product website 5.2. Operating limits Operating limits for medium temperature and operating pressure The operating range of Bürkert process valves is limited in addition to the maximum operating pressures by the nominal pressure according to the relevant standard. Operating limits for PN25 according to DIN EN 12516-1 Operating limits for Class 150 according to ASME B16.34 Operating limits for flange 10K according to JIS B 2220 Saturated steam curve for water -40 100 120 140 160 200 220 -0,9 0 5 10 15 20 25 Application limits of operating pressure and medium pressure Medium temperature [°C] Operating pressure [bar] Low-temperature version required High-temperature version required -10 185 14 19 Saturated steam curve Standard -20 230 Operating limits for optional versions High-temperature version Thanks to an adaption of the spindle sea, this version is suitable for applications with steam, neutral gases and other heat transfer mediums up to + 230 °C. Water version For applications with water up to + 200 °C, a special configuration of the spindle seal increases service life significantly.It is recommended for all water applications. Drinking water version The materials comply with the assessment principles (UBA) for materials in contact with drinking water up to + °C. Low-temperature version Suitable for minimum medium temperatures down to -
13 | 14Visit product website 6. Product design and assembly 6.1. Product features Note More detailed information can be found in the operating instructions Type 2920 Position indicator When the valve is opened (turn the handwheel anti-clockwise), the yellow position indicator becomes visible. Handwheel Position indicator Interlock (optional) The valve can be secured against unintentional or unauthorized operation. For this purpose, a lock pin can be pressed down and turned. The locking pin has a hole (Ø 3.8) and can be secured with a padlock. Lock pin Closed position Open position Stroke limitation (optional) Both the minimum and the maximum position of the valve can be adjusted via an adjustment sleeve. The handwheel can be removed for this purpose. Screw on handwheel Square Adjusting sleeve
14 | 14Visit product website 7. Ordering information 7.1. Bürkert eShop Bürkert eShop – Easy ordering and quick delivery You want to find your desired Bürkert product or spare part quickly and order directly? Our online shop is available for you 24/7. Sign up and enjoy all t he benefits. Order online now 7.2. Bürkert product filter Bürkert product filter – Get quickly to the right product You want to select products comfortably based on your technical requirements? Use the Bürkert product filter and find suitable articles for your application quickly and easily. Try out our product filter 7.3. Bürkert Product Enquiry Form Note: Please see our Product Enquiry Form for a full explanation of our specification key. Bürkert Product Enquiry Form – Your enquiry quickly and compactly Would you like to make a specific product enquiry based on your technical requirements? Use our Product Enquiry Form for this purpose. There you will find all the relevant informa tion for your Bürkert contact. This will enable us to provide you with the best possible advice. Fill out the form now