6712 BURKERT | Alldatasheet

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Visit product website  DATA SHEET Type 8763  Pressure controller for precise time-pressure dosing Type 2503  Cable plug for whisper valve Types 6712 and 6724 Standard | EU | en | 2024-03-20 | 12 2/2-way Whisper Valve with media separation

  • Highest chemical resistance combined with minimum internal volume Compact design with 7 mm installation width DN 0.8 mm (3 bar) and 0.4 mm (5 bar) Switching noise < dB For dosing applications with excellent cleanability Fluidic “point-of-care” applications, such as dialysis or artificial respiration, and “point-of-use” applications, such as at pipetting arms in biological analysis, pres- ent special requirements. The media-separated Whisper Valve Type 6712 was developed for precisely these applications. It sets new benchmarks particularly with low switching noise and excellent cleanability. The Type 6712 is also the first choice in industrial applications, such as inkjet printers. The valve’s modular design and available material variants means that it can be used with practically all liquids and gases in the fields of life sciences and industrial applications. This is a valve that combines dosing accuracy and cleanability. Product variants described in the data sheet may differ from the product presentation and description. Type description Can be combined with Type 6712 © Christian Bürkert GmbH & Co. KG, Subject to alteration

2 | 9Visit product website  Table of contents 1. General technical data 3 Circuit functions Approvals and conformities 3.2. Conformity 3.3. Standards 3.4. Foods and beverages/Hygiene 4. Materials 5 4.2. Material specification 5. Dimensions 6 5.2. Manifolds 6. Ordering information 8 6.2. Bürkert product filter 6.3. Ordering chart 6.4. Ordering chart accessories Manifolds Cable plug Type 2503 Fittings and hoses

3 | 9Visit product website  1. General technical data Product properties Dimensions Further information can be found in chapter “5. Dimensions” on page 6 Material Seal FFKM (EPDM on request) Fluidic housing PEEK or PPS Internal volume Fluid chamber: approx. 2 µl Total (including connections): approx. 5 µl Orifice DN 0.4 or DN 0.8 Circuit function Further information can be found in chapter “2. Circuit functions” on page 4 Typical product service life 30 million switching cycles (according to laboratory endurance test) 1.) Performance data Pressure ranges DN 0.4 0…5 bar 2.) DN 0.8 0…3 bar 2.) Pressure at the outlet (back pressure) DN 0.4 Max. 1.8 bar 2.) DN 0.8 Max. 1.2 bar 2.) Switching noise 36 dB(A) 3.) Switching time 4.) Opening: approx. 0.9 ms (pressure build-up 0…10 %) Closing: approx. 1.8 ms (pressure release 100…90 Electrical data Operating voltage 12 V/DC or 24 V/DC Duty cycle 100 % continuous operation Nominal power 0.9 W 5.) Switching frequency 50 Hz Voltage tolerance ± % (including residual ripple) Medium data Operating medium Resistant to neutral and aggressive gases and liquids Further information can be found in chapter “4.1. Bürkert resistApp” on page 5 Medium temperature FFKM: + 10 ºC…+ EPDM: 0 ºC…+ 55 ºC Viscosity Max. 21 mm2/s Process/Port connection & communication Electrical connection Single flying leads, AWG 26, 500 mm Cable plug Type 2503 with grid dimension 2 mm 6.) (see chapter “Cable plug Type 2503” on page 9) Port connection Bürkert flange (7 18.2 mm) Approvals and conformities Degree of protection IP40 with flying leads IP10 with cable plug Type 2503 Foods and beverages/Hygiene FDA (on request only with seal material EPDM) Further information can be found in chapter “3.4. Foods and beverages/Hygiene” on page 4 Environment and installation Installation position As required, preferably with actuator upright Ambient temperature FFKM: + 10 ºC…+ EPDM: 0 ºC…+ 55 ºC 1.) Service life depends on the type of medium, the temperature, the pressure, the seal material, control and the specific operational conditions. The use of a freewheeling diode is rec - ommended to extend the service life. 2.) Relative pressure; no vacuum possible. With optional boost electronics (see “6.4. Ordering chart accessories” on page 9 ) pressure ranges increase. 3.) Tested under Bürkert test conditions. The value may deviate under different conditions. 4.) Typical switching time measured between valve outlet and a flow resistance according to DIN ISO 12238:2001 at 25 °C; switching time depends on temperature, pressure and seal ing material. 5.) No further power reduction possible 6.) Please order cable plug with flying leads separately (see “Cable plug Type 2503” on page 9). For other suitable push-in connectors see data sheet Type 2503

4 | 9Visit product website  2. Circuit functions Symbol Description NC Circuit function A (CF A) 2/2-way solenoid valve Direct-acting Normally closed 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 mentioned 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. Foods and beverages/Hygiene Conformity Description 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.

5 | 9Visit 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 4.2. Material specification No. Element Material

1 Cover PPS

2 Coil housing Nickel-plated

3 Valve body PPS

4 Diaphragm 1.) FFKM (EPDM on request) 5 Fluidic housing 1.) PEEK or PPS 6 Flange seal 1.) FFKM (EPDM on request)

7 Fixing screw Stainless steel

1.) in contact with medium

6 | 9Visit product website  5. Dimensions 5.1. Valve Note: Dimensions in mm 18.2 23.5 12.1 Ø 0.9 14.7 3.95 15.2 Flying leads version 3.6 DN Ø 0.9 2.5 2.5 M1.6 min. 4 mm deep 15.2 Flangeinterface for manifold max. Ø 1 Station width 7.2 min. Plug version 0.5 4.9 6.5 Polarity left = + right = - Polarity red = + black= -

7 | 9Visit product website  5.2. Manifolds Note: Dimensions in mm 1x manifold with UNF ¼"- 28 working ports Delivery without valve Customised manifolds on request 7.5 6.5 3.2 3.2 8.5 (2x) UNF1/4"-28 7.5 3.2 (2x) UNF 1/4"-28 25° 25° Description Article no. Manifold UNF ¼"-

28 PEEK 694895

Description Article no. Manifold UNF ¼"-

28 PEEK (low internal volume) 695956

8 | 9Visit product website  6. Ordering information 6.1. 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 6.2. 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 6.3. Ordering chart Note: Please order cable plug with lead or electronic Type 2503 separately (see “6.4. Ordering chart accessories” on page 9 Attachment for flange connection: 2 stainless steel cylinder screws ISO 4762 M1.6 x 8 (included) Circuit function Port connection Orifice QNn value air 1.) KV value water 2.) CV value water Voltage/ Frequency Pres- sure range Max. back pressure at the outlet Body material Seal material Electrical connection Article no. [mm] [l/min] [m 3/h] [gpm] [V/Hz] [bar] [bar] CF A 2/2-way solenoid valve Direct-acting Normally closed NC Bürkert flange V/DC 0.8 13.1 0.012 0.014 12 V/DC 0…3 1.2 PEEK FFKM Plug 273231 Flying leads 273187 V/DC Plug 273235 Flying leads 267651 1.) Measurement at + 20 °C, 1 bar at the valve inlet and 1 bar pressure difference 2.) Measurement at + °C, 1 bar at the valve inlet and free outlet

9 | 9Visit product website  6.4. Ordering chart accessories Manifolds Note: Refer to chapter “5.2. Manifolds” on page 7 for more order information. Cable plug Type 2503 Note: Special custom-built manifolds are available on request. Accessories Description Article no. Cable plug with 500 mm flying leads AWG 24 For further information please refer to data sheet Type 2503 689974  Cable plug with 500 mm flying leads and boost-close electronics to increase the permissible pressure under NC. For further information refer to the operating instructions for Type 2503 BoostClose or see data sheet Type 2503 689998  Fittings and hoses Accessories Description Article no. Fittings and hoses for UNF connections and hoses see type Type TVU003  . see data sheet TVU003