2873 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 | 08 Direct-acting 2-way standard solenoid control valve
- Excellent range Very good response Compact valve design Orifice sizes 0.8…6 mm Optional: Explosion-protected coil The direct-acting solenoid control valve Type 2873 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 2873 © Christian Bürkert GmbH & Co. KG, Subject to alteration
2 | 13Visit 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 5 5.2. Sub-base body 5.3. ATEX/IECEx version 6. Performance specifications 7 6.2. Exemplary characteristic curve of a proportional valve .... 7. Product operation 8 8. Ordering information 9 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 | 13Visit product website 1. General technical data Product properties Dimensions Further information can be found in chapter “5. Dimensions” on page 5 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…16 bar Nominal operating mode 100 % continuous operation Electrical data Operating voltage 24 V DC (at 5 W and 24 V coil) (12 V on request) Power consumption Max. 9 W Maximum coil current 4.) 420 mA (at 9 W and 24 V coil) PWM frequency 5.) 1200 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 ⅛, G ¼, NPT ⅛, NPT ¼, others on request 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 13 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 | 13Visit 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…T5 Gb II 2 D Ex mb IIIC T130 °C Db IECEx: Ex mb IIC T4…T5 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 | 13Visit 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 5. Dimensions 5.1. Threaded version Note: Dimensions in mm 17.5 64.5 A A B B 8.5 Threaded body G1 /8 NPT 1/8 22.5 69.5 B B A A 30.5 4x M4 8 4x M4 8 Threaded body G 1/4 NPT 1/4 Port connection A B Thread G ¼ 12 G ⅛ 8 NPT ¼ 10 NPT ⅛ 7
6 | 13Visit product website 5.2. Sub-base version Note: Dimensions in mm DN 4x 4 8.9 27.8 16.5 P Sub-base body FK01 5.3 2 x M4 30.5 3.7 6.3 P Sub-base body FB01
7 | 13Visit product website 5.3. ATEX/IECEx version Note: Dimensions in mm Length according to order Standard lenght 3000 10.9 10.6 85.8 min. R30 6.2 10.8 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
8 | 13Visit 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: Δpvalve > 25 % 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 8
9 | 13Visit 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 9 ) 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 8 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
10 | 13Visit 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 Orifice KVS value water 1.) Nominal pressure 2.) 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) Sub-base FK01 0.8 0.018 16 8 234291 234306 G ⅛ 0.018 16 8 234289 234305 NPT ⅛ 0.018 16 8 236229 236230 Sub-base FK01 1.2 0.040 12 6 234293 234308 G ⅛ 0.040 12 6 234292 234307 NPT ⅛ 0.040 12 6 236231 236232 Sub-base FK01 1.5 0.060 10 5 234295 234310 G ⅛ 0.060 10 5 234294 234309 NPT ⅛ 0.060 10 5 236233 236234 Sub-base FK01 2.0 0.100 8 4 234298 234313 G ⅛ 0.100 8 4 234296 234311 NPT ⅛ 0.100 8 4 236235 236236 G ¼ 0.100 8 4 234297 234312 NPT ¼ 0.100 8 4 236237 236238 Sub-base FK01 2.5 0.150 5 2.5 234300 234315 G ¼ 0.150 5 2.5 234299 234314 NPT ¼ 0.150 5 2.5 236239 236241 Sub-base FK01 3.0 0.220 3.5 1.75 234302 234317 G ¼ 0.220 3.5 1.75 234301 234316 NPT ¼ 0.220 3.5 1.75 236242 236243 Sub-base FK01 4.0 0.320 2 1 234304 234319 G ¼ 0.320 2 1 234303 234318 NPT ¼ 0.320 2 1 236244 236245 1.) Measurement at + 20 °C, 1 bar pressure differential over a fully opened valve. 2.) 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.
11 | 13Visit 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 Nominal pressure 2.) 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 ⅛ 0.8 UR 0.018 16 8 274944 274960 NPT ⅛ 0.018 16 8 274945 274961 G ⅛ ATEX/IECEx 0.018 8 4 304473 o. r. G ⅛ 1.2 UR 0.040 12 6 274946 274962 NPT ⅛ 0.040 12 6 274947 274963 G ⅛ ATEX/IECEx 0.040 6 3 304474 o. r. G ⅛ 1.5 UR 0.060 10 5 274948 274964 NPT ⅛ 0.060 10 5 274949 274965 G ⅛ ATEX/IECEx 0.060 6 3 304475 o. r. G ⅛ 2.0 UR 0.100 8 4 274950 274966 NPT ⅛ 0.100 8 4 274951 274967 G ⅛ ATEX/IECEx 0.100 6 3 304476 o. r. G ¼ UR 0.100 8 4 274952 274968 NPT ¼ 0.100 8 4 274953 274969 G ¼ 2.5 UR 0.150 5 2.5 274954 274970 NPT ¼ 0.150 5 2.5 274955 274971 G ¼ ATEX/IECEx 0.150 3 1.5 304470 o. r. G ¼ 3.0 UR 0.220 3.5 1.75 274956 274972 NPT ¼ 0.220 3.5 1.75 274957 274973 G ¼ ATEX/IECEx 0.220 2 1 304477 o. r. G ¼ 4.0 UR 0.320 2 1 274958 274974 NPT ¼ 0.320 2 1 274959 274975 G ¼ ATEX/IECEx 0.320 1 0.5 304472 o. r. o. r. = on request 1.) Port connection: others on request
12 | 13Visit product website Version for higher differential pressures Note: All valves with FKM seal Other connection variants (Sub-base, NPT) on request PWM frequency 800 Hz Span 1:100 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 Orifice Approvals K VS-value water 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 ⅛ 0.8 – 0.018 16 239070 239072 G ⅛ UR 0.018 16 275009 275016 G ⅛ ATEX/IECEx 0.018 8 304465 o. r. G ⅛ 1.2 – 0.040 12 239073 239074 G ⅛ UR 0.040 12 275010 275018 G ⅛ ATEX/IECEx 0.040 6 330865 o. r. G ⅛ 1.5 – 0.060 10 239075 239076 G ⅛ UR 0.060 10 275011 275019 G ⅛ ATEX/IECEx 0.060 6 326019 o. r. G ⅛ 2.0 – 0.100 8 239077 239078 G ⅛ UR 0.100 8 275012 275020 G ⅛ ATEX/IECEx 0.100 6 330866 o. r. G ¼ 2.5 – 0.150 5 239079 239080 G ¼ UR 0.150 5 275013 275022 G ¼ ATEX/IECEx 0.150 3 330867 o. r. G ¼ 3.0 – 0.220 3.5 239081 239082 G ¼ UR 0.220 3.5 275014 275023 G ¼ ATEX/IECEx 0.220 2 330868 o. r. G ¼ 4.0 – 0.320 2 239083 239084 G ¼ UR 0.320 2 275015 275024 G ¼ ATEX/IECEx 0.320 1 330869 o. r. G ¼ 5.0 – 0.430 0.8 280645 o. r. G ¼ 6.0 – 0.580 0.5 254419 o. r. o. r. = on request Further versions on request Material Seal material FFKM Seal material EPDM Analytical Oxygen version, parts oil-, fat- and silicon free Approval UR (UL recognized) ATEX/IECEx Electrical connection V Coil
13 | 13Visit 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