2875 BURKERT | Alldatasheet
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Visit product website DATA SHEET Type 8605 PWM control electronics for electromagnetic proportional valves Type 2518 Cable plug, form A according to DIN EN 175301 803 Type 8611 eCONTROL - Universal controller Standard | EU | en | 2023 - 10 - 25 | 09 Direct-acting 2-way standard solenoid control valve
- Excellent range Very good response Compact valve design Orifice sizes 2…9.5 mm Optional: Explosion-protected coil The direct-acting solenoid control valve Type 2875 is used as the regulating unit in control loops. Due to an elastomeric seat seal the valve closes tight (integrated shut-off function), up to the DN specific nominal pressure. The plunger of the valve is assembled frictionless, which leads to an extraordinary adjustment characteris tic. This valve is particularly suitable for demanding control tasks (high control range, dry gases, etc.). Product variants described in the data sheet may differ from the product presentation and description. Type descriptionCan be combined with Type 2875 © Christian Bürkert GmbH & Co. KG, Subject to alteration
2 | 16Visit product website Table of contents 1. General technical data 3 Circuit functions Approvals and conformities 3.2. Conformity 3.3. Standards 3.4. Explosion protection 3.5. North America (USA/Canada) ... 3.6. Foods and beverages/Hygiene ... 4. Materials 5 5. Dimensions 6 Threaded body Sub-base body 5.2. ATEX/IECEx version Threaded body Sub-base body 6. Performance specifications 9 6.2. Exemplary characteristic curve of a proportional valve .... 7. Product operation 10 8. Ordering information 11 8.2. Recommendation regarding product selection.... 8.3. Bürkert product filter 8.4. Bürkert Product Enquiry Form ... 8.5. Ordering chart Standard version Version with approvals Version for higher differential pressures 8.6. Ordering chart accessories Cable plug Type 2518, form A according to DIN EN 175301 803 Control electronics Type 8605 for proportional valves
3 | 16Visit product website 1. General technical data Product properties Dimensions Further information can be found in chapter “5. Dimensions” on page 6 Material Body Brass, stainless steel Seal FKM, EPDM Performance data Typical values of positioning behaviour 1.) Hysteresis < 5 % Repeat accuracy < 0.5 % of end value 2.) Response sensitivity < 0.25 % of end value 2.) Setting range 1:200 Actuating time (10…90 %) < ms Pressure range 3.) 0…25 bar Nominal operating mode 100 % continuous operation Electrical data Operating voltage 24 V DC (12 V on request) Power consumption 16 W Maximum coil current 4.) 750 mA (at 16 W and 24 V coil) PWM frequency 5.) 900 Hz Medium data Operating medium Neutral gases, liquids on request Medium temperature - °C…+ °C (with FKM) °C…+ °C (with EPDM) Viscosity Max. 21 mm2/s (21 cSt) Process/Port connection & communication Port connection size Sub-base, G ⅜, G ½, NPT ⅜, NPT Electrical connection Cable plug Type 2518, form A according to DIN EN 175301 803 Further information can be found in chapter “Cable plug Type 2518, form A according to DIN EN 175301 803” on page 15 Approvals and conformities Degree of protection IP65 Environment and installation Installation position As required, preferably with actuator upright Ambient temperature Max. + 1.) Characteristic data of control behaviour depends on process conditions. 2.) By flow measurement 3.) Pressure data: overpressure to atmospheric pressure, depending on nominal diameter, tightness seal or nominal pressure 4.) Maximum value: value depends on operating pressure 5.) PWM: pulse width modulation 2. Circuit functions Symbol Description 2 (A) 1 (P) Circuit function A (CF A) 2/2-way solenoid proportional control valve Direct-acting Normally closed
4 | 16Visit product website 3. Approvals and conformities 3.1. 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 menti oned approvals or conformities. 3.2. Conformity In accordance with the Declaration of conformity, the product is compliant with the EU Directives. 3.3. 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. 3.4. Explosion protection Approval Description Optional: Explosion protection ATEX: II 2 G Ex mb IIC T4 Gb II 2 D Ex mb IIIC T130 °C Db IECEx: Ex mb IIC T4 Gb Ex mb IIIC T130 °C Db 3.5. North America (USA/Canada) Approval Description Optional: UL Recognized for the USA The products are UL Recognized for the USA according to: UL 429 (Electrically operated valves) 3.6. Foods and beverages/Hygiene Conformity Description USP United States Pharmacopeial Convention (USP) (valid for the variable code PL04) All wetted materials are biocompatible according to the manufacturer‘s declaration. FDA FDA – Code of Federal Regulations (valid for the variable code PL02, PL03) 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.
5 | 16Visit product website 4. Materials 4.1. 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
6 | 16Visit product website 5. Dimensions 5.1. Standard version Threaded version Note: Dimensions in mm F1 F1 1 1 SW34 104.5 45.5 9 M4 4.5 24.5 25.5
1 For G threads the mass
Port connection F1 G1 F2 G2 Thread 12 G ⅜ 10.3 NPT 14 G ½ 13.7 NPT
7 | 16Visit product website Sub-base version Note: Dimensions in mm 45.5 9 19 2x M4 15.5 27.5 DN 8.2 P 24.5 25.5
8 | 16Visit product website 5.2. ATEX/IECEx version Threaded version Note: Dimensions in mm F F G G 1 SW34 Length according to order Standard lenght 3000 44.5 104.5 105 14.4 18.4 45.6 24.5 min. R30 M4 4.5 10.8 Port connection F1 G1 F2 G2 Thread 12 G ⅜ 10.3 NPT 14 G ½ 13.7 NPT
9 | 16Visit product website Sub-base version Note: Dimensions in mm DN Ø 15.5 27.5 8.2 P 2x M4 6. Performance specifications 6.1. Flow characteristic Determination of the KV value Pressure drop KV value for liquids KV value for gases [m3/h] [m3/h] Sub-critical p2 > 2 = Q ρ Δp1000 = Q 514 QN ρNT1 Δ pp2 Supercritical p2 < 2 = Q ρ Δp1000 = Q QN ρNT1 257 p1 KV Flow coefficient [m3/h] 1.) QN Standard flow rate [mN 3/h] 2.) p1 Inlet pressure [bar] 3.) p2 Outlet pressure [bar] 3.) ∆p Differential pressure p 1…p2 [bar] ρ Density [kg/m3] ρN Standard density [kg/m3] T1 Medium temperature [(273+t)K] 1.) Measured for water, ∆p = bar, over the value 2.) At reference conditions 1.013 bar and 0 °C (273 K) 3.) Absolute pressure
10 | 16Visit product website 6.2. Exemplary characteristic curve of a proportional valve Note: In continuous flow applications, the choice of an appropriate valve size is much more important than with on/off valves. The optimum size should be selected such that the resulting flow in the system is not unnecessarily reduced by the valve. However, a sufficient part of the pressure drop should be taken across the valve even when it is fully opened. Reference value: Δp valve % of the total pressure drop Otherwise, an ideal, linear valve characteristic is deformed into a curved system charac teristic. If the differential pressure (difference between inlet and outlet pressure) exceeds half the value of the nominal pressure discontinuities may occur. For that reason take advantage of Bürkert competent engineering services during the planning phase. 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 KV KVS 0 5 10 [V] 4 12 20 [mA] 0 10 20 [mA] 7. Product operation 7.1. Control unit Valve control takes place through a PWM signal (pulse-width modulation). The duty cycle of the PWM signal determines the coil current and hence the position of the plunger. The Bürkert control electronics Type 8605 (see data sheet Type 8605 ) converts an analogue signal to a reference value corresponding to the valve type PWM signal and provides additional functions such as temperature compensation (coil heating), ramp function and the adjustment of min. and max. duty cycle/coil current for the control range. Please note the sizing comments for such a control valve in chapter “6.2. Exemplary characteristic curve of a proportional valve” on page 10
11 | 16Visit product website 8. Ordering information 8.1. 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 the benefits. Order online now 8.2. Recommendation regarding product selection Note: Use the product enquiry form (see “8.4. Bürkert Product Enquiry Form” on page 11 ) for information about the device layout and send it to us after completion. Please note the chapter “6.2. Exemplary characteristic curve of a proportional valve” on page 10 on product selection. 8.3. 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 8.4. Bürkert Product Enquiry Form 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
12 | 16Visit product website 8.5. Ordering chart Standard version Note: All valves with FKM seal Please note that the cable plug must be ordered separately, see “Cable plug Type 2518, form A according to DIN EN 175301 803” on page or separate data sheet for Type 2518 Circuit function Port connection 1.) Orifice KVS value water 2.) Nominal pressure 3.) Maximum differential pressure Article no. Brass body Article no. Stainless steel body [mm] [m³/h] [bar] [bar] CF A 2/2-way solenoid proportional control valve Direct-acting Normally closed 2 (A) 1 (P) G ⅜ 2.0 0.12 25 12.5 236897 236899 NPT ⅜ 0.12 25 12.5 236898 236900 G ⅜ 3.0 0.25 10 5 236901 236903 NPT ⅜ 0.25 10 5 236902 236904 G ⅜ 4.0 0.45 8 4 236905 236910 NPT ⅜ 0.45 8 4 236908 236912 G ½ 0.45 8 4 236906 236911 NPT ½ 0.45 8 4 236909 236913 G ½ 6.0 0.80 4 2 236915 236919 NPT ½ 0.80 4 2 236917 236921 G ½ 8.0 1.10 2 1 236922 236924 NPT ½ 1.10 2 1 236923 236925 G ½ 9.5 1.40 0.7 0.35 273004 314557 NPT ½ 1.40 0.7 0.35 314555 314559 1.) Port connection: others on request 2.) Measurement at + °C, 1 bar pressure differential over a fully opened valve. 3.) Pressure data: overpressure to atmospheric pressure. If the differential pressure between the inlet and outlet pressure of the valve is greater than half of the nominal pressure, dis continuities in the valve characteristic curve are possible.
13 | 16Visit product website Version with approvals Note: All valves with FKM seal and ATEX version with 3 m connection cable. Please note that the cable plug must be ordered separately, see “Cable plug Type 2518, form A according to DIN EN 175301 803” on page or separate data sheet for Type 2518 Refer to chapter “3. Approvals and conformities” on page 4 for more information about the approvals. Circuit function Port connection 1.) Orifice Approvals K VS-value water 2.) Nominal pressure Maximum differential pressure Article no. Brass body Article no. Stainless steel body [mm] [m³/h] [bar] [bar] CF A 2/2-way solenoid proportional control valve Direct-acting Normally closed 2 (A) 1 (P) G ⅜ 2.0 UR 0.12 25 12.5 274976 274988 NPT ⅜ 0.12 25 12.5 274977 274989 G ⅜ ATEX/IECEx 0.12 20 10 291483 o. r. G ⅜ 3.0 UR 0.25 10 5 274978 274990 NPT ⅜ 0.25 10 5 274979 274991 G ⅜ ATEX/IECEx 0.25 9 4.5 291485 o. r. G ⅜ 4.0 UR 0.45 8 4 274980 274992 NPT ⅜ 0.45 8 4 274981 274993 G ⅜ ATEX/IECEx 0.45 7 3.5 291486 o. r. G ½ UR 0.45 8 4 274982 274994 NPT ½ 0.45 8 4 274983 274995 G ½ 6.0 UR 0.80 4 2 274984 274996 NPT ½ 0.80 4 2 274985 274997 G ½ ATEX/IECEx 0.80 3.5 1.75 291487 o. r. G ½ 8.0 UR 1.10 2 1 274986 274998 NPT ½ 1.10 2 1 274987 274999 G ½ ATEX/IECEx 1.10 1.5 0.75 291488 o. r. o. r. = on request 1.) Port connection: others on request 2.) Measurement at + °C, 1 bar pressure differential over a fully opened valve.
14 | 16Visit product website Version for higher differential pressures Note: All valves with FKM seal Other connection variants (Sub-base, NPT) on request PWM frequency: 500 Hz Span: 1:100 For Δp bar it is possible to get inconsistencies in the characteristic curve because of flow conditions in the application. Please note that the cable plug must be ordered separately, see “Cable plug Type 2518, form A according to DIN EN 175301 803” on page or separate data sheet for Type 2518 Refer to chapter “3. Approvals and conformities” on page 4 for more information about the approvals. Circuit function Port c onnection 1.) Orifice Approvals K VS-value water 2.) Nominal pressure Article no. Brass body Article no. Stainless steel body[mm] [m³/h] [bar] CF A 2/2-way solenoid proportional control valve Direct-acting Normally closed 2 (A) 1 (P) G ⅜ 2.0 – 0.12 25 239040 239085 G ⅜ UR 0.12 25 275000 275005 G ⅜ ATEX/IECEx 0.12 20 291468 o. r. G ⅜ 3.0 – 0.25 10 239086 239087 G ⅜ UR 0.25 10 275001 275006 G ⅜ ATEX/IECEx 0.25 9 291470 o. r. G ⅜ 4.0 – 0.45 8 239088 239089 G ⅜ UR 0.45 8 274090 274091 G ⅜ ATEX/IECEx 0.45 7 291474 o. r. G ½ 6.0 – 0.80 4 239090 239091 G ½ UR 0.80 4 275002 275007 G ½ ATEX/IECEx 0.80 3.5 291476 o. r. G ½ 8.0 – 1.10 2 239092 239093 G ½ UR 1.10 2 275004 275008 G ½ ATEX/IECEx 1.10 1.5 291477 o. r. G ½ 9.5 – 1.40 0.7 291586 314558 o. r. = on request 1.) Port connection: others on request 2.) Measurement at + °C, 1 bar pressure differential over a fully opened valve. Further versions on request Material EPDM Analytical Oxygen version, parts oil-, fat- and silicon free Approval UR (UL recognized) ATEX/IECEx Process connection Sub-base version
15 | 16Visit product website 8.6. Ordering chart accessories Cable plug Type 2518, form A according to DIN EN 175301 - 803 Note: For further versions see data sheet Type 2518 Cable plug Dimensions Version Voltage Article no. ca. 51 35.7 3.5 1.5 29.2 Ø 19 29.2 Without circuitry (AC/DC) 0…250 V AC/DC 314802 Control electronics Type 8605 for proportional valves Note: Refer to data sheet Type 8605 for more information about the control electronics. Control electronics Version Max. coil current range Voltage Article no. [mA] 24 V DC 12 V DC Cable plug with PG cable gland 200…1000 o. r . o. r . 316530 Cable plug with M12 connection 200…1000 o. r . o. r . 316528 Cable plug with PG cable gland 500…2000 – o. r. 316529 Cable plug with M12 connection 500…2000 – o. r. 316526 Cable plug with PG cable gland without operating element 200…1000 o. r . o. r . 316521 Cable plug with M12 connection without operating element 200…1000 o. r . o. r . 316522 Cable plug with PG cable gland without operating element 500…2000 – o. r. 316523 Cable plug with M12 connection without operating element 500…2000 – o. r. 316525 Standard rail 200…1000 o. r . o. r . 316532 Standard rail 500…2000 – o. r. 316533 o. r. = on request – = not available
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