CAT.ES70-22 A Series VC Direct Operated 2 Port Solenoid Valve for Heated Water Series VCB Multipurpose Valve for Heated Water Direct Operated 2 Port Solenoid Valve for Heated Water Series VCB Improved durability (Nearly twice the life of the previous series) Use of special magnetic material reduces the operating resistance of moving parts. Longevity, wear resistance and corrosion resistance improved. High flow rate: Cv factor 0.16 to 2.1 Compact: Single valve volume reduced 15% (Class 3) Clip type Quick change coil Clip design makes coil replacement easy. Flame resistant molded coil material UL94 V-0 standard Coil size and weight reduced New compact coil reduces the size and weight of the valve Volume: –15% Compared to previous series Weight: –20% (Class 3) } Threaded assembly Simplifies maintenance Improved corrosion resistance Improved corrosion resistance Special materials introduced Bottom mounting threads Mounting bracket also available Enclosure: Dust-proof & splash-proof (IP65 equivalent) Wiring specifications (Class H coil) Wiring variations Three compact sizes available Grommet Conduit Conduit terminal VCB2 VCB3 VCB4 Class 2 Class 3 Class 4 Features 1 Direct Operated 2 Port Solenoid Valve for Heated Water Series Series VC VCB How to Order Valves VC B 2 1 1 G 2 02 For heated water Option When no symbol is shown for material and insulation type • Body material: CAC406 • Seal material: FKM • Coil insulation: Class H Nil F Material and insulation type Symbol Body material Seal material Coil insulation Nil FKM CAC406 (BC6) M EPDM Class H N FKM SUS P EPDM Series 2 3 4 None Foot type bracket Class 2 Class 3 Class 4 Valve type Thread type N.C. Nil N F OUT 1 Rc NPT G IN Port size Symbol 01 02 03 04 06 Voltage 1 2 3 4 36 100VAC 200VAC 110VAC 220VAC 230VAC ∗ Consult SMC regarding other voltages. Electrical entry G – Grommet C – Conduit Port size 1/8 (6A) 1/4 (8A) 3/8 (10A) 1/2 (15A) 3/4 (20A) Class 2 — — — Class 3 — — Class 3 — Class 4 — Orifice size Symbol Orifice size (mmø) Class 2 2 2 3 3 4 4 5 5 — 7 7 — 10 10 ∗ Refer to the table below for orifice and port size combinations. Orifice and port size combinations Class T – With conduit terminal TL – With conduit terminal and light 2 3 4 1 Port size Orifice size (mmø) 2 3 4 5 7 1/8 (6A) — — 1/4 (8A) — — — 1/4 (8A) — 3/8 (10A) — 1/2 (15A) — — — 1/4 (8A) — 3/8 (10A) — 1/2 (15A) — — — 3/4 (20A) — — — — — 10 — — — — — Class 4 — Direct Operated 2 Port for Heated Water Series VCB Standard Specifications Valve construction Direct operated poppet Fluid Heated water (99°C or less) Valve specifications Withstand pressure MPa 5.0 Body material CAC406 (BC6), SUS Seal material FKM, EPDM Ambient temperature °C –20 to 100 Fluid temperature °C 99 or less Enclosure Dust proof, Splash proof (equivalent to IP65) Environment Location without corrosive or explosive gases Valve leakage cm³/min 0 (with water pressure) Mounting orientation Unrestricted Vibration/Impact resistance m/s² Note 1) Coil Specifications Rated voltage 30/150 or less 100VAC, 110VAC, 200VAC, 220VAC, 230VAC (50/60Hz) ±10% of rated voltage Allowable voltage fluctuation Coil insulation type Class H Power consumption W 50/60Hz Apparent power VA 50/60Hz VCB2: 4.9/4.1, VCB3: 7.7/6.6, VCB4: 10.5/9.3 Inrush VCB2: 22/19, VCB3: 36/30, VCB4: 45/37 Holding VCB2: 10/8, VCB3: 15/13, VCB4: 19/16 Note 1) Vibration resistance … Conditions when tested with one sweep of 10 to 300Hz in the axial direction and at a right angle to the armature, in both energized and deenergized states Impact resistance …... Conditions when tested with a drop tester in the axial direction and at a right angle to the armature, one time each in energized and deenergized states Characteristic Specifications Note 1) Note 1) Model Class Port size VCB2 VCB3 VCB4 2 3 4 1/8 (6A) 1/4 (8A) 1/4 (8A) 3/8 (10A) 1/2 (15A) 1/4 (8A) 3/8 (10A) 1/2 (15A) 3/4 (20A) Orifice size mmø Maximum Effective area operating mm² pressure (Cv factor) differential MPa 2 2.0 2.8 (0.16) 3 0.8 5.9 (0.33) 4 0.5 9.2 (0.51) 5 0.3 11.7 (0.65) 3 2.0 6.3 (0.35) 4 0.8 9.7 (0.54) 5 0.5 14.4 (0.80) 7 0.2 24.8 (1.38) 10 0.1 37.8 (2.10) 3 3.0 6.3 (0.35) 4 1.3 10.8 (0.60) 5 0.7 15.3 (0.85) 7 0.3 24.8 (1.38) 10 0.12 37.8 (2.10) Maximum operating pressure MPa Weight kg 3.0 1/8: 0.21 1/4: 0.24 3.0 1/4: 0.42 3/8: 0.40 1/2: 0.49 3.0 1/4: 0.58 3/8: 0.55 1/2: 0.62 3/4: 0.78 Note 1) Refer to model selection on page 5 regarding port size and orifice size combinations. 2 Series VCB Construction Parts list No. Material Standard Description Stainless steel 1 Clip 2 Core assembly 3 Coil assembly 4 Armature assembly 5 Seal FKM (EPDM) 6 Return spring Stainless steel 7 Body Stainless steel/Cu Class H Stainless steel/FKM (EPDM) CAC406 (stainless steel) Bracket Dimensions A J 4-øG C L E D B 1.5 4-øH Valve mounting hole F Bracket material: Stainless steel Bracket mounting dimensions (mm) Valve model Port size Bracket part no. A B C D E F G H J L VCB2 1/8, 1/4 VCW20-12-01A 34 40 25 30 12.8 12.8 5 4.5 6 13 1/4, 3/8 VCW30-12-02A 42 52 30 40 19 19 6 5.5 7 19 1/2 VCW30-12-04A 48 56 36 44 23 23 6 5.5 7 23 1/4, 3/8 VCW40-12-02A 42 52 30 40 23 23 6 5.5 7 19 1/2 VCW30-12-04A 48 56 36 44 23 23 6 5.5 7 23 VCW40-12-06A 3/4 44 65 56 ∗ Two mounting screws (for mounting bracket) are included with the above parts. 53 28.2 28.2 6 5.5 7 26 VCB3 VCB4 3 Direct Operated 2 Port for Heated Water Series VCB Dimensions Grommet: G Conduit: C F Approx. 280 F E R G1/2 E A H Q C D C Q R Approx. 300 D 2-P Port size B A H B 2-M Thread depth N 2-P Port size L L 2-M Thread depth N K K Conduit terminal: T (Q) F R C U 25 34 E G1/2 B A H D (S) 2-P Port size L 2-M Thread depth N K (mm) Electrical entry Model VCB21 VCB31 VCB41 P Port size A B C 1/8 13.5 28 64 D E F H K L M N Grommet: G Conduit: C Q R Q R 50 31 6.5 12.5 28 14 12.8 M4 4.5 22 59 44 8.5 Conduit terminal: T Q 99 R S U 50 66 83 86 1/4 18 36 67.5 31 12.5 28 18 12.8 M4 6 22 62 44 53 53 66 1/4, 3/8 22 40 81.5 36.5 11 15 32 20 19 M5 8 24 76 46 66.5 101 66.5 68 99 1/2 30 50 86 36.5 13.5 15 32 25 23 M5 8 24 80 46 71 101 71 68 104 1/4, 3/8 22 45 90 41 11 17 36 22.5 23 M5 8 26 84 48 74.5 103 74.5 70 107 1/2 30 50 94 41 13.5 17 36 25 23 M5 8 26 88 48 78.5 103 78.5 70 111.5 3/4 35 60 102 41 17.5 17 36 30 28.2 M5 8 26 96 48 86.5 103 86.5 70 119 99 4 Series VCB Model Selection VCB (for heated water) 2 port solenoid valve Model Material Body Class Seal 2 VCB (for heated water) 2 port solenoid valve Orifice size mmø Port size CAC406 (SUS) FKM (EPDM) 3 4 2 3 4 5 7 10 1/8 (6A) — — 1/4 (8A) — — 1/4 (8A) — — 3/8 (10A) — 1/2 (15A) — — — — — 1/4 (8A) — — 3/8 (10A) — 1/2 (15A) — — — — — 3/4 (20A) — — — — — OUT IN Viewing the graph Flow rate Q l /min 100 10 5.0 To generate a water flow of 5 l /min at a differential pressure of 0.1MPa, an effective area with Cv factor 0.35 (VCB34 , ø3) or more is required. 2.1 .38 v= v=1 0 C 7 C 1 ø 3 ø 5 3 0.8 B 4 VCB 4 v= VC 6 C 0.1 ø5 v= 4 C B 2 VC ø B2 VC How to find the flow rate for water • Formula based on Cv factor Q = 14.2 ⋅ Cv ⋅ 10.2 ⋅ ∆P … l /min • Formula based on effective area (Smm²) Q = 0.8 ⋅ S ⋅ 10.2 ⋅ ∆P …… l /min VCB 43 ø3 Cv = 0.35 1.0 VCB2ø3 Cv = 0.33 VCB2ø5 Cv = 0.65 VCB3ø4 Cv = 0.54 VCB2ø4 Cv = 0.51 0.1 0.001 0.01 0.1 1 Pressure differential ∆P = (P₁ – P₂) MPa 5 10 Q: Flow rate (l /min) ∆P: Pressure differential (P₁ — P₂) P₁: Upstream pressure (MPa) P₂: Downstream pressure (MPa) S: Effective area (mm²) Cv: Cv factor Model Selection Series VCB Explanation of Terminology Pressure Terminology 1. Maximum operating pressure differential This indicates the maximum pressure differential (the difference between the upstream and downstream pressure) which can be allowed for operation with the valve closed or open. When the downstream pressure is 0MPa, this becomes the maximum operating pressure. 2. Maximum operating pressure This indicates the upper limit of pressure that can be applied inside the pipelines (line pressure). (The pressure differential of the solenoid valve unit must be no more than the maximum operating pressure differential.) 3. Proof pressure The pressure which must be withstood without deterioration in performance when the valve returns to the operating pressure range (the value under the specified conditions). Electrical Terminology 1. Surge voltage A high voltage which is momentarily generated in the shut-off unit by shutting off the power. Other 1. Materials FKM: Fluoro rubber – Trade names: Viton®, Dai-el®, etc. EPDM: Ethylene propylene rubber CAC406: Bronze (BC6) C37: Brass SUS: Stainless steel 6 Series VCB Safety Instructions These safety instructions are intended to prevent a hazardous situation and/or equipment damage. These instructions indicate the level of potential hazard by a label of "Caution", "Warning" or "Danger". To ensure safety, be sure to observe ISO 4414 Note 1) and other safety practices. Caution : Operator error could result in injury or equipment damage. Warning : Operator error could result in serious injury or loss of life. Danger : In extreme conditions, there is a possible result of serious injury or loss of life. Note 1) ISO 4414 : Pneumatic fluid power -- Recommendations for the application of equipment to transmission and control systems Warning 1. The compatibility of equipment is the responsibility of the person who designs the system or decides its specifications. Since the products specified here are used in various operating conditions, their compatibility for the specific system must be based on specifications or after analysis and/or tests to meet your specific requirements. Be particularly careful in determining the compatibility of the fluid to be used. 2. Only trained personnel should operate machinery and equipment. The fluid can be dangerous if handled incorrectly. Assembly, handling or repair of systems should be performed by trained and experienced operators. 3. Do not service machinery/equipment or attempt to remove components until safety is confirmed. 1. Inspection and maintenance of machinery/equipment should only be performed after confirmation of safe locked-out control positions and measures to prevent danger from the fluid. 2. When equipment is to be removed, confirm the safety process as mentioned above, release fluid pressure and be certain there is no danger from fluid leakage or fluid remaining in the system. 3. Restart machinery carefully, confirming that safety measures are being implemented. 4. Contact SMC if the product is to be used in any of the following conditions: 1. Conditions and environments beyond the given specifications, or if product is used outdoors. 2. With fluids whose application causes concern due to the type of fluid or additives, etc. 3. An application which has the possibility of having negative effects on people, property, or animals, requiring special safety analysis. 7 Series VCB 2 Port Solenoid Valve for Fluid Control Precautions 1 Be sure to read before handling. Design The valves presented in this catalog are not designed for safety applications such as an emergency shutoff valve. If the valves are used in this type of system, other reliable safety assurance measures should also be adopted. 2. Extended periods of continuous energization Consult SMC if valves will be continuously energized for extended periods of time. 3. Liquid seals In cases with a flowing liquid, provide a by-pass valve in the system to prevent the liquid from entering the liquid seal circuit. 4. This solenoid valve cannot be used for explosion proof applications. 5. Maintenance space The installation should allow sufficient space for maintenance activities. Warning 1. Confirm the specifications. Give careful consideration to operating conditions such as the application, fluid and environment, and use within the operating ranges specified in this catalog. 2. Fluid temperature Operate within the prescribed fluid temperature range. The temperature range changes depending on the seal material, coil insulation and the type of power supply, etc. 3. Fluid quality The use of fluid which contains foreign matter can cause problems such as malfunction and seal failure by promoting wear of the valve seat and armature, and by sticking to the sliding parts of the armature, etc. Install a suitable filter (strainer) immediately upstream from the valve. As a general rule, use 80 to 100 mesh. When used to supply water to boilers, substances such as calcium and magnesium which generate hard scale and sludge are included. Since this scale and sludge can cause valve malfunction, install water softening equipment, and a filter (strainer) directly upstream from the valve to remove these substances. Caution 1. Leakage voltage Particularly when using a resistor in parallel with a switching element and using a C-R element (surge voltage suppressor) to protect the switching element, take note that leakage current will flow through the resistor and C-R element, etc., creating a danger that the valve may not shut OFF. Switching element Power supply Warning 1. Cannot be used as an emergency shutoff valve, etc. Selection Leakage voltage OFF C R Valve Leakage current AC coil 10% or less of rated voltage 2. Low temperature operation 1. The valve can be used at ambient temperatures as low as –20°C, but take measures to prevent freezing or solidification of impurities, etc. 2. When used in cold areas, adopt freeze prevention measures such as draining the water from pipelines. If warmed with a heater, etc., avoid the coil unit. Also, implement warming or other freeze prevention measures for the body. 8 Series VCB 2 Port Solenoid Valve for Fluid Control Precautions 2 Be sure to read before handling. Mounting Warning 1. If air leakage increases or equipment does not operate properly, stop operation. After mounting is completed, confirm that it has been done correctly by performing a suitable function test. 2. Do not apply external force to the coil section. When tightening is performed, apply a wrench or other tool to the outside of the piping connection parts. 3. Do not warm the coil assembly with a heat insulator, etc. Piping Caution 1. Preparation before piping Before piping is connected, it should be thoroughly blown out with air (flushing) or washed to remove chips, cutting oil and other debris from inside the pipe. 2. Wrapping of pipe tape When connecting pipes and fittings, etc., be sure that chips from the pipe threads and sealing material do not get inside the valve. Furthermore, when pipe tape is used, leave 1.5 to 2 thread ridges exposed at the end of the threads. Winding direction Use tape and heaters, etc., for freeze prevention on the piping and body only. They can cause burn out of the coil. 4. Secure with brackets, except in the case of steel piping and copper fittings. 5. Avoid sources of vibration, or adjust the arm from the body to the minimum length so that resonance will not occur. 6. Instruction manual Mount the product after reading the manual carefully and understanding its contents. Also keep the manual where it can be referred to as necessary. 7. Painting and coating Warnings or specifications printed or pasted on the product should not be erased, removed or covered up. Ex po se Pipe tape ap pro x. 2t hre ad s 3. Avoid connection of ground lines to piping, as this may cause electric corrosion of the system. 4. Always tighten threads with the proper tightening torque. When screwing fittings into valves, tighten with the proper tightening torque shown below. Tightening torque for piping Connection threads Rc 1/8 Proper tightening torque N⋅ m 7 to 9 Rc 1/4 12 to 14 Rc 3/8 22 to 24 Rc 1/2 28 to 30 Rc 3/4 28 to 30 5. Connection of piping to products When connecting piping to a product, refer to its instruction manual to avoid mistakes regarding the supply port, etc. Furthermore, be sure to hold the product with a tool such as a wrench when tightening. 9 Series VCB 2 Port Solenoid Valve for Fluid Control Precautions 3 Be sure to read before handling. Wiring Operating Environment 1. As a rule, use electrical wire with a cross sectional area of 0.5 to 1.25mm² for wiring. Furthermore, do not allow excessive force to be applied to the lines. 2. Use electrical circuits which do not generate chattering in their contacts. 3. Use voltage which is within ±10% of the rated voltage. In cases with a DC power supply where importance is placed on responsiveness, stay within ±5% of the rated value. The voltage drop is the value in the lead wire section connecting the coil. 4. When surge from the solenoid affects the electrical circuitry, install a surge absorber, etc., in parallel with the solenoid. 1. Do not use valves in atmospheres of corrosive gases, chemicals, salt water, water, or where there is direct contact with any of these. 2. Do not use in explosive atmospheres. 3. Do not use in locations subject to vibration or impact. 4. Do not use in locations where radiated heat will be received from nearby heat sources. 5. Employ suitable protective measures in locations where there is contact with water droplets, oil or welding spatter, etc. Caution Warning Electrical Connections Grommet/Conduit 2. Removing the product AWG18 Lead wire color 2 1 Blue Blue Rated voltage 1 2 100VAC 200VAC Red Red Other AC Gray Gray Conduit terminal In the case of the conduit terminal, make connections according to the marks shown below. Terminal cover Round head combination screw M3 – mark 1 + Warning 1. Perform maintenance in accordance with the procedures in the instruction manual. Improper handling can cause damage or malfunction of machinery and equipment, etc. In addition, perform maintenance inspections once every six months to ensure optimum performance. Caution 2 - Maintenance A The valve will reach a high temperature when used with high temperature fluids. Confirm that the valve temperature has dropped sufficiently before performing work. If touched inadvertently, there is a danger of being burned. Removal 1. Shut off the fluid supply and release the fluid pressure in the system. 2. Shut off the power supply. 3. Demount the product. 3. Low frequency operation Switch valves at least once every 30 days to prevent malfunction. Caution 1. Filters and strainers + mark 1. Be careful regarding clogging of filters and strainers. 2. Replace filter elements after one year of use, or earlier if the pressure drop reaches 0.1MPa. 3. Clean strainers when the pressure drop reaches 0.1MPa. A Terminal screw M3 Conduit terminal View A-A (Internal connection diagram) ∗ Tighten the terminal cover screws and terminal screws with a torque of 0.5N⋅m. 2. Storage In case of long term storage after use with heated water, first thoroughly remove all moisture to prevent rust and deterioration of rubber materials, etc. Electrical Circuits Operating Precautions Caution Grommet/Conduit AC Warning Conduit terminal SOL. AC SOL. Without light AC SOL. With light 1. Valves will reach high temperatures from high temperature fluids. Use caution, as there is a danger of being burned if a valve is touched directly. 2. Valves may reach high temperatures when continuously energized. Use caution, as there is a danger of being burned if a valve is touched directly. Light 10 VCB Specific Product Precautions Series Be sure to read before handling. Refer to pages 7 through 10 for safety instructions and precautions of 2 port solenoid valve for fluid control. Replacing the Solenoid Coil Caution Replacement Parts Solenoid coil part numbers The valve will reach high temperatures from high temperature fluids such as heated water. Confirm that the valve has cooled sufficiently before performing work. If touched inadvertently, there is a danger of being burned. Clip VCS 20 1 G Lead wire length Series 20 30 40 Nil L1 L2 L3 L4 Class 2 Class 3 Class 4 300mm 600mm 1000mm 1500mm 3000mm Note) Grommet type only Voltage 1 2 3 4 36 Flat head screw driver Solenoid coil Insert a flat head screw driver into the hook section of the clip groove. Clip 100VAC 200VAC 110VAC 220VAC 230VAC Electrical entry G C T TL Grommet Conduit With conduit terminal With conduit terminal/light part numbers AZ-T-VCB How to Order Valves → Page 1 Valve model Page 5 Valve model Note) Indicate the valve model, as a label will be attached to the clip. Seal part numbers Valve For VCB20 OR-1860-120- F Tilt the screw driver down in direction so that the clip slides out in direction . For VCB30 F: FKM E: EPDM OR-2380-130- F For VCB40 F: FKM E: EPDM OR-2600-180- F F: FKM E: EPDM If external leakage occurs after replacing the coil, replace the above seals. When the loosened clip is pulled out in direction using pinchers, etc., the coil can be removed and replaced in direction . After replacing the coil, the clip is reinstalled by pushing it back in the direction opposite to its removal. 11 SMC'S GLOBAL MANUFACTURING, DISTRIBUTION AND SERVICE NETWORK EUROPE EUROPE NORTH AMERICA AUSTRIA SMC Pneumatik GmbH CZECH SMC Czech s.r.o. DENMARK SMC Pneumatik A/S FINLAND SMC Pneumatiikka OY FRANCE SMC Pneumatique SA GERMANY SMC Pneumatik GmbH HUNGARY SMC Hungary Kft. IRELAND SMC Pneumatics (Ireland) Ltd. ITALY SMC Italia S.p.A. NETHERLANDS SMC Pnuematics BV. NORWAY SMC Pneumatics Norway A/S ROMANIA SMC Romania s.r.l. RUSSIA SMC Pneumatik LLC. SLOVAKIA SMC Slovakia s.r.o. SLOVENIA SMC Slovenia d.o.o. SPAIN/PORTUGAL SMC España, S.A. SWEDEN SMC Pneumatics Sweden AB SWITZERLAND SMC Pneumatik AG. UK SMC Pneumatics (U.K.) Ltd. CANADA SMC Pneumatics (Canada) Ltd. MEXICO SMC Corporation (Mexico) S.A. de C.V. USA SMC Pneumatics, Inc. ASIA CHINA SMC (China) Co., Ltd. HONG KONG SMC Pneumatics (Hong Kong) Ltd. INDIA SMC Pneumatics (India) Pvt. Ltd. MALAYSIA SMC Pneumatics (S.E.A.) Sdn. Bhd. PHILIPPINES SMC Pneumatics (Philippines), Inc. SINGAPORE SMC Pneumatics (S.E.A.) Pte. Ltd. SOUTH KOREA SMC Pneumatics Korea Co., Ltd. TAIWAN SMC Pneumatics (Taiwan) Co., Ltd. THAILAND SMC Thailand Ltd. SOUTH AMERICA ARGENTINA SMC Argentina S.A. BOLIVIA SMC Pneumatics Bolivia S.R.L. BRAZIL SMC Pneumaticos Do Brazil Ltda. CHILE SMC Pneumatics (Chile) S.A. VENEZUELA SMC Neumatica Venezuela S.A. OCEANIA AUSTRALIA SMC Pneumatics (Australia) Pty. Ltd. NEW ZEALAND SMC Pneumatics (N.Z.) Ltd. 1-16-4 Shimbashi, Minato-ku, Tokyo 105-0004, JAPAN Tel: 03-3502-2740 Fax: 03-3508-2480 URL http://www.smcworld.com © 2000 SMC CORPORATION All Rights Reserved 1st printing June, 2000 D-SMC.L.A. P-80 (D) Specifications are subject to change without prior notice and any obligation on the part of the manufacturer. Printed in Japan.
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