DUNGS FCVL-G - Flow Control Valves Linear for Gas

[{"filename":"fcvl-g_datasheet_en_301224.pdf","text":"Flow Control Valve Linear\n FCVL…\n\n Nominal diameter\n Rp ½ - Rp 2\n\n\n\n\n FLOW CONTROL\n VALVE LINEAR\n\n GAS\n\n\n\n - Linear relationship between \t\t\n flow rate and opening angle\n - For high control accurary\n - Directly mountable\n Flow Control Drives FCD\n - Suitable for 100 % Hydrogen\n - EU Certified\n\n\n\n\n Technical description Application\n The DUNGS flow control valve line- The DUNGS flow control valve linear\n ar FCVL… is a control valve without FCVL… is used to control the gas sup-\n zero shut-off according to EN 13611. ply to gas burners and gas appliances.\n The control valve is suitable for gases\n The compact construction consists in gas families 1, 2 and 3, hydrogen (H2,\n of flow rate bodies with mounting dry) and other neutral gases.\n threaded flanges, which allow for sim-\n ple assembly with the pipeline infront Certification\n\n\n\n\n Printed in Germany • Edition 2024.03 • No. 301224\n of the burner. Examination certificate according to\n - EU Gas Appliances Regulation\n - UKCA Gas Appliances Regulation\n\n\n\n\n1…8\n\fFlow Control Valve Linear\nFCVL…\n\n\n\n\nTechnical data\nNominal diameters Rp ½ - Rp 2\nMax. operating pressure 500 mbar (50 kPa)\nMax. differential pressure 500 mbar\nMedium Gas families 1, 2 and 3, H2 and other neutral gaseous media.\n Suitable for gases up to max. 0.1 vol. % H2S\nAmbient temperature -20 °C to +60 °C\nMedium temperature -20 °C to +60 °C\nMax. permissible actuating speed 1.5 s / 90°\nMaterials of the gas-carrying parts Housing: aluminium\n Spindle: stainless steel\n Control cylinder: aluminium\n Threaded flange: aluminium\n Seals: NBR\nInstallation position Vertically upright to lying horizontally\nDrive adoption External square 7 x 7 mm\n More on request\n\n\nType code FCV\n\nFCVL-G XYY/ZZ\n\n\n\n\n Control cylinder size\n 08 / 15 / 20 / 25 / 32 / 40 / 50\n\n\n Nominal diameter Rp\n 05 (½\"), 07 (¾\"), 10 (1\"), 12 (1¼\"),\n 15 (1½\"), 20 (2\")\n\n Max. operating pressure\n 5 = 500 mbar (50 kPa)\n\n\n Medium\n G = Gas\n\n\n FCVL\n Flow Control Valve Linear\n\nFor example: “3G-OTH-02880 515/40”\n 2…8\n\f Flow Control Valve Linear\n FCVL…\n\n\n\n\n Function\n The flow control valve linear FCVL is Depending on the model, the control Avoid direct contact be-\n used to adjust the gas supply volume cylinder is equipped with a different tween the linear control\n to gas consumption devices and is an opening size so that it can maintain valve and dried masonry, con-\n automatic control valve that is pow- corresponding levels of flow rate. crete walls or floors!\n ered by auxiliary energy. The corre- A lever is available as an accessory\n sponding electromechanical actuator for manually adjusting the opening Only set the nominal pres-\n determines the position of the control angle. sure on the pressure regu-\n cylinder and the operating time. The lator. Any output-related restric-\n rotatable cylinders with an opening tions should only be performed\n angle between 0° and 90° help to using the linear control valve.\n achieve high control accuracy and the\n desired flow rate. Different cross-sec- Check for leaks and func-\n tion sizes for the medium are released tion after installation!\n depending on the opening angle and\n cylinder position. There is a linear\n relationship between flow rate and\n opening angle, which can be meas-\n ured using an integrated position in-\n dicator. There are stops at approx. -5°\n and approx. 95°.\n\n\n\n\n Type Ordering no. Nominal Cylinder Weight Max. operat-\n diameter [mm] [kg] ing pressure\n 3G-OTH-02880 505/08 300272 Rp ½ 08 1.65\n 3G-OTH-02880 507/15 300273 Rp ¾ 15 1.65\n 3G-OTH-02880 510/20 300274 Rp 1 20 1.60\n 3G-OTH-02880 512/25 300275 Rp 1¼ 25 1.60 500 mbar\n 3G-OTH-02880 515/32 300276 Rp 1½ 32 1.55\n 3G-OTH-02880 520/40 300277 Rp 2 40 1.50\n 3G-OTH-02880 520/50 300278 Rp 2 50 1.50\n 3G-OTH-02880 505/08 NPT 300686 NPT ½ 08 1.65\n 3G-OTH-02880 507/15 NPT 300687 NPT ¾ 15 1.65\n 3G-OTH-02880 510/20 NPT 300688 NPT 1 20 1.60\n 3G-OTH-02880 512/25 NPT 300689 NPT 1¼ 25 1.60 500 mbar\n 3G-OTH-02880 515/32 NPT 300690 NPT 1½ 32 1.55\n 3G-OTH-02880 520/40 NPT 300691 NPT 2 40 1.50\n 3G-OTH-02880 520/50 NPT 300692 NPT 2 50 1.50\n\n\n\n\n3…8\n\fFlow Control Valve Linear\nFCVL…\n\n\n\n\n Dimensions [mm]\n f\n b\n\n\n\n\n f\n c\n\n\n\n\n e\n\n\n\n Ø\n\n d\n\n\n\n\n 80 a 32.5\n\n\n\n\n Ø 50\n 8 x Ø 6.2\n\n\n\n\nType Nominal diameter Cylinder Dimensions [mm]\n [mm]\n Height incl.\n a b c d e f drive\n FCD..00-10\nFCVL-G 505/08 Rp / NPT ½ 08\nFCVL-G 507/15 Rp / NPT ¾ 15\nFCVL-G 510/20 Rp / NPT 1 20\nFCVL-G 512/25 Rp / NPT 1¼ 25 58 123 74 80 164 7x7 256.5\nFCVL-G 515/32 Rp / NPT 1½ 32\nFCVL-G 520/40 Rp / NPT 2 40\nFCVL-G 520/50 Rp / NPT 2 50\nFlanges & 4 screws are enclosed.\n 4…8\n\f Flow Control Valve Linear\n FCVL…\n\n\n\n\n Device selection If the volume flows are small, the When the valve is used in subcritical\n The following values must be known for pressure loss of upstream devic- flow states, the following applies:\n the dimensioning of the FCVL: es will fall. This increases the ∆p\n available to the linear control valve. Vn [m3/h]\n 1. Max. flow rate Vmax. Flow rate, standard state\n 2. Pressure loss ∆p at max. flow rate To obtain an optimum control ∆p [bar]\n 3. Min. flow rate Vmin. response, always choose the con- Pressure loss FCVL\n 4. Differential pressure when the con- trol cylinder size with the largest p2 [bar]\n trol valve is in the closed position pressure loss ∆p (∆p > 10 mbar). Absolute pressure\n…