2961

2961 BURKERT | Alldatasheet

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Technical content

Visit product website  DATA SHEET Type 2301  Pneumatically operated 2-way Globe Control Valve Type 3361  Electromotive 2-way globe control valve Type 2921  Manually operated 2/2-way globe valve Type 2960  Manually operated 2-way angle seat control valve Type 8802  ELEMENT continuous control valve systems – overview Type 8840  Modular process valve cluster – distributor and collector Standard | EU | en | 2024 - 03 - 13 | 01 Manually operated 2-way globe control valve

• Excellent control accuracy Exchangeable valve seats enable perfect coordination under the most demanding operating conditions Robust actuator with optional stroke limitation and locking Stainless steel valve body with flange, socket, clamp or welded connection The Type 2961 control valve consists of a manual actuator and a globe valve body with exchangeable seats made of high-quality stainless steel. Each globe valve body can be equipped with up to 8 valve seat sizes and reaches the desired flow characteristic curve in interaction with parabolic cones. The precise spindle guide enables control, even under demanding operating conditions. A soft PTFE or PEEK seal guarantees reliable sealing. The actuator is made of high-quality plastic and is suitable for use in demanding environments. It possesses a visual position indica tor and can be optionally equipped with stroke limitation and locking. The spindle seal uses tried-and-tested V-seals and possesses spring compensation, which means that it does not need to be pulled back manually. Product variants described in the data sheet may differ from the product presentation and description. Type description Can be combined with Type 2961 © Christian Bürkert GmbH & Co. KG, Subject to alteration

2 | 17Visit 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 flange connection 4.3. Body with threaded connection 4.4. 4.5. Body with clamp connection 5. Performance specifications 12 Flow characteristics 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 seat seal Operating limits for optional versions 6. Product design and assembly 16 7. Ordering information 17 7.2. Bürkert product filter 7.3. Bürkert Product Enquiry Form

3 | 17Visit 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 Globe control valve Nominal diameter (port connection) DN 10…DN 100, NPS ⅜…NPS 4 Flow direction Flow to open (below seat) Performance data Operating pressure 0 bar(g) … 25 bar(g) (see “5.1. Fluidic data” on page 12 Nominal pressure PN 25 (DIN EN 1333), Class 150 (DIN EN 1759) Seat leakage according to DIN EN 60534 4:2006 Leakage class II Leakage class VI for PTFE and PEEK (see “5.1. Fluidic data” on page 12 KV value 0.1 m³/h…140 m³/h (see “5.1. Fluidic data” on page 12 ) Operating characteristic Equal percentage Medium data Medium Steam, water, neutral gases, alcohol, oils, fuels, hydraulic fluids, salt solution, alkali solutions, organic solvents Medium temperature - °C…+ 230 °C (see “5.2. Operating limits” on page 14 Viscosity Max. 600 mm2/s Process/Port connection & communication Port connection 1.) Flange connection DIN EN 1092 - 1 ANSI B 16.5 JIS 10K Threaded connection G (DIN ISO 228 NPT (ASME B1.20.1) RC (ISO 7 Welded connection DIN EN ISO 1127 / ISO 4200 / DIN 11866 series B DIN 11850 2 / DIN 11866 series A ASME BPE / DIN 11866 series C SMS 3008 Clamp connection DIN 32676 series B (pipe: ISO 4200) DIN 32676 series 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 upright 1.) Further versions are available on request.

4 | 17Visit 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 Suitable as category 2 device 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 | 17Visit 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 | 17Visit 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 Nr. Element Werkstoff

1 Cover Polyamide (PA)

2 Screw Stainless steel 1.4301 3 Locking device Stainless steel 1.4305

4 Handwheel Polyphenylene sulphide (PPS)

5 Visual position

Polyamide (PA)

6 Spindle seal PTFE V-rings (filled), with spring

7 Stem Stainless steel 1.4401 or 1.4404 8 Spindle guide Stainless steel 1.4404 (316L), PTFE filled

9 Housing seal Graphite

10 Control cone 1.4571 (optionally hardened)

11 Seat seal (optional) PTFE or PEEK

12 Valve seat with O-ring Stainless steel 1.4571, EPDM

13 Valve body Stainless steel 316L/CF3M

7 | 17Visit product website  4. Dimensions 4.1. Actuator Note: Dimensions in mm Position opened 3,8 Nominal connection size (pipe) Handwheel diameter Ø H1 H2 (locking) [DN] [NPS] [mm] 15 ½ 45 (S) 217 224 20 ¾ 45 (S) 224 230 25 1 45 (S) 228 234 32 1 ¼ 110 (M) 296 303 40 1 ½ 110 (M) 301 307 50 2 110 (M) 307 313 65 2 ½ 160 (L) 361 368 80 3 160 (L) 369 375 100 4 160 (L) 379 385

8 | 17Visit product website  4.2. Body with flange connection Note: Dimensions in mm LF AF DF D BF MF x A A x α Nominal diameter (port connection) DIN EN 1092 - 1 PN 25 FTF 1 according to DIN EN 558 JIS 10K FTF 10 according to DIN EN 558 - 2 DN Ø DF LF Ø BF AF Ø D A x α Ø MF Ø DF LF Ø BF AF Ø D A x α Ø MF 10 90 130 60 16 14 4 x 90° 13.6 – – – – – – – 15 95 130 65 16 14 4 x 90° 18.1 95 108 70 12 15 4 x 90° 18.1 20 105 150 75 18 14 4 x 90° 23.7 100 117 75 14 15 4 x 90° 23.7 25 115 160 85 18 14 4 x 90° 29.7 125 127 90 14 19 4 x 90° 29.7 32 140 180 100 18 18 4 x 90° 38.4 135 140 100 16 19 4 x 90° 38.4 40 150 200 110 18 18 4 x 90° 44.3 140 165 105 16 19 4 x 90° 44.3 50 165 230 125 20 18 4 x 90° 56.3 155 203 120 16 19 4 x 90° 56.3 65 185 290 145 22 18 8 x 45° 66.0 175 216 140 18 19 4 x 90° 71.5 80 200 310 160 24 18 8 x 45° 81.0 185 241 150 18 19 8 x 45° 84.3 100 235 350 190 24 22 8 x 45° 100.0 292 292 175 18 19 8 x 45° 109.1 Nominal diameter (port connection) ANSI B 16.5 Class 150 FTF 37 according to DIN EN 558 - 2 NPS Ø DF LF Ø BF AF Ø D A x α Ø MF ½ 89 184 60.5 11.2 15.7 4 x 90° 15.7 ¾ 99 184 69.9 12.7 15.7 4 x 90° 20.8 1 108 184 79.2 14.2 15.7 4 x 90° 26.7 1½ 127 222 98.6 17.5 15.7 4 x 90° 40.9 2 152 254 120.7 19.1 19.1 4 x 90° 52.6 2½ 178 276 139.7 22.3 19.1 4 x 90° 62.7 3 190 298 152.5 23.9 19.1 4 x 90° 78.0 4 229 352 190.5 23.9 19.1 8 x 45° 102.4

9 | 17Visit product website  4.3. Body with threaded connection Note: Dimensions in mm LM E D SW Nominal diameter (port connection) G (DIN ISO 228 - 1) NPT (ASME B1.20.1) RC (ISO 7 D E LM SW DN NPS [G] [NPT] [Rc] 10 ⅜ 12 10.3 10.1 65 27 15 ½ 14 13.7 13.2 65 27 20 ¾ 16 14 14.5 75 34 25 1 18 16.8 16.8 90 41 32 1¼ 20 17.3 19.1 110 50 40 1½ 22 17.3 19.1 120 55 50 2 24 17.6 23.4 150 70 65 2½ 26 23.7 26.7 185 85 80 3 28 30.5 29.8 205 100 100 4 32 33 35.8 240 125

10 | 17Visit product website  4.4. Body with welded connection Note: Dimensions in mm LS DS WS ES Nominal diameter (port connection) ES LS DIN EN ISO 1127 / ISO 4200 / DIN 11866 series B DIN 11850 - 2 / DIN 11866 series A / DIN EN 10357 series A DN Ø DS WS Ø DS WS 10 20 90 17.2 1.6 13 1.5 15 20 90 21.3 1.6 19 1.5 20 20 100 26.9 1.6 23 1.5 25 26 130 33.7 2.0 29 1.5 32 26 140 42.4 2.0 35 1.5 40 26 150 48.3 2.0 41 1.5 50 26 175 60.3 2.0 53 1.5 65 26 210 76.1 2.3 70 2.0 80 26 230 88.9 2.3 85 2.0 100 26 260 114.3 2.6 104 2.0 Nominal diameter (port connection) ES LS ASME BPE / DIN 11866 series C NPS Ø DS WS ½ 20 90 12.7 1.65 ¾ 20 90 19.05 1.65 1 20 100 25.4 1.65 1½ 26 140 38.1 1.65 2 26 150 50.8 1.65 2½ 26 175 63.5 1.65 3 26 210 76.2 1.65 4 26 260 101.6 2.11

11 | 17Visit product website  4.5. Body with clamp connection Note: Dimensions in mm LC SC D2C D1C Nominal diameter (port connection) DIN 32676 A (Rohr: DIN 11850 - 2) DIN 32676 B (Rohr: ISO 4200) DN LC Ø D2 C Ø D1 C SC LC Ø D2 C Ø D1 C SC 15 126 19 34 1.5 146 21.3 50.5 1.6 20 136 23 34 1.5 136 26.9 50.5 1.6 50 218 53 64 1.5 218 60.3 77.5 2.0 Nominal diameter (port connection) ASME BPE NPS LC Ø D2 C Ø D1 C SC ½ 122 12.7 25.0 1.65 ¾ 126 19.05 25.0 1.65 1 126 25.4 50.5 1.65 1½ 172 38.1 50.5 1.65 2 182 50.8 64.0 1.65 2½ 231 63.5 77.5 1.65 3 265 76.2 91.0 1.65 4 315 101.6 119.0 2.11

12 | 17Visit product website  5. Performance specifications 5.1. Fluidic data Flow characteristics Flow characteristic according to DIN EN 60534 KVR value at 5 % of stroke for DN > 10 mm KVR value at 10 % of stroke for DN ≤ 10 mm KVR value = smallest KV value, at which the tilt tolerance according to DIN EN 60534 - 2 - 4 is still maintained. 100 0 10 20 30 40 50 60 70 80 90 100 KV/KVS [%] Stroke [%] Equal percentage flow curve - detailed values please see below 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 according to DIN EN 60534 Bürkert product filter(see “7.2. Bürkert product filter” on page Info: Rules for decimal places implemented according to works standard Nominal diameter (pipe) Seat size Hand - wheel dia meter Ø Operating pressure max. CF A (Seat leakage class) Theo - retical range- ability KV value at stroke [m3/h] KVS value Seat seal Stain- less steel PTFE PEEK DN NPS [mm] [bar(g)] 5 % 10 % 20 % 30 % 40 % 50 % 60 % 70 % 80 % 90 % 100 % [m3/h] 10 ¾ 15 ½ 20 ¾ 1.) Deviation for port connections according to ASME BPE: the next largest Nominal diameter (port connection) is used, e.g. NPS 1 instead of NPS ¾. 2.) According to the Pressure Equipment Directive 97/23/EC for compressible fluids of Group 1 (hazardous gases and vapours according to Article 3 No. 1.3 letter a first dash)

13 | 17Visit product website  Nominal diameter (pipe) Seat size Hand - wheel dia meter Ø Operating pressure max. CF A (Seat leakage class) Theo - retical range- ability KV value at stroke [m3/h] KVS value Seat seal Stain- less steel PTFE PEEK DN NPS [mm] [bar(g)] 5 % 10 % 20 % 30 % 40 % 50 % 60 % 70 % 80 % 90 % 100 % [m3/h] 32 1 ¼ 40 1 ½ 50 2 2.) 20 110 (M) 25 (20) (II) 1.) 32 110 (M) 25 (20) (II) 1.) 32 110 (M) 25 (20) (II) 1.) (20) (VI) 1.) (20) (VI) 1.) 40 110 (M) 25 (20) (II) 1.) (20) (VI) 1.) (20) (VI) 1.) 50 110 (M) 25 (20) (II) 1.) (20) (VI) 1.) (VI) 1.) 65 2 ½ 2.) 40 160 (L) 25 (15) (II) 1.) (15) (VI) 1.) (15) (IV) 1.) 50 160 (L) 25 (15) (II) 1.) (15) (VI) 1.) (VI) 1.) 65 160 (L) 24 (15) (II) 1.) (15) (VI) 1.) 80 3 2.) 50 160 (L) 25 (12.5) (II) 1.) (12.5) (VI) 1.) (VI) 1.) 65 160 (L) 24 (12.5) (II) 1.) (12.5) (VI) 1.) (12.5*) (VI) 80 160 (L) 16 (12.5) (II) 1.) (12.5) (VI) 1.) 100 4 65 160 (L) 24 (10) (II) 1.) (10) (VI) 1.) (10) (VI) 1.) 80 160 (L) 16 (10) (II) 1.) (10) (VI) 1.) 1.) According to the Pressure Equipment Directive 97/23/EC for compressible fluids of Group 1 (hazardous gases and vapours according to Article 3 No. 1.3 letter a first dash) 2.) Deviation for port connections according to ASME BPE: the next largest Nominal diameter (port connection) is used, e.g. NPS 1 instead of NPS ¾.

14 | 17Visit product website  5.2. Operating limits Operating limits for medium temperature and operating pressure The operating range of Bürkert process valves is in addition to the maximum operating pressures limited 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 Medium temperature [°C] Operating pressure [bar(g)] Low temperature version required High temperature version required -10 185 14 19 Saturated steam curve Standard -20 230

15 | 17Visit product website  Operating limits for seat seal Tight sealing required Leakage class (DIN EN 60534 Medium temperature Seat seal No An additional shut-off valve is recommended III/IV (metal seals) Metal-sealed valves have larger leakages (0.1 % or 0.01 % of the nominal flow rate are permissible). Metallic seals are impervious even under demanding process conditions. 40…+ 230 °C Stainless steel Yes An additional shut-off valve is often unnecessary. VI (soft seals) By using plastics as sealing material, the control valves can close tightly. Their use is not recommended in cases of increased erosion due to demanding process conditions. 40…+ 130 (recommended for ≤ 130 °C) PTFE 10…+ 230 (recommended for > 130 °C) PEEK Operating limits for optional versions High-temperature version Thanks to an adaption of the spindle seal, 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 water temperatures starting at + °C. Drinking water version Wetted materials are tested in contact with the medium are tested for suitability with drinking water up to + °C. Low-temperature version Suitable for minimum medium temperatures down to -

16 | 17Visit product website  6. Product design and assembly 6.1. Product features Note More detailed information can be found in the operating instructions Type 2961 Position indicator When turning the handwheel counterclockwise, the reproducible stroke scale becomes visible between the attachment and the handwheel visible. The scale on the handwheel, together with the stroke scale, enables reproducible adjustment of the flow rate. Handwheel with scale Reproducible stroke scale Interlock (optional) The valve can be secured against unintentional or unauthorized operation. For this purpose, a securing 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

17 | 17Visit 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