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High-Performance Gas
for Industrial Applications
"Installation and Configuration"
How this unit is delivered:
The unit is not provided with the threaded flanges.
Obtain the threaded flanges separately and mount
them for use at your site.
(Photo: Valve with threaded flange (sold separately))
Solenoid Valve
GV-A
User's Manual
for
No. CP-SP-1356E
Thank you for purchasing the GV-A
High-Performance Gas Solenoid Valve
for Industrial Applications. This manual
contains information for ensuring the
correct use of the GV-A.
This manual should be read by those who
design and maintain equipment that uses
the GV-A.
Also, the manual provides necessary
information for installation, maintenance,
and troubleshooting. Be sure to keep this
manual nearby for handy reference.
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Summary of Contents for Azbil GV-A Series
- Page 1 No. CP-SP-1356E High-Performance Gas Solenoid Valve for Industrial Applications GV-A User's Manual "Installation and Configuration" Thank you for purchasing the GV-A High-Performance Gas Solenoid Valve for Industrial Applications. This manual contains information for ensuring the correct use of the GV-A. This manual should be read by those who design and maintain equipment that uses the GV-A.
- Page 2 If you should find an error or omission, please contact Azbil Corporation. In no event is Azbil Corporation liable to anyone for any indirect, special or consequential damages as a result of using this product. © 2014-2020 Azbil Corporation. All Rights Reserved.
- Page 3 The following is the CE Declaration of Conformity issued by Elster GmbH. Note: 1. Azbil's GV-A corresponds to Elster GmbH's model VAS. VCS (double valve) is a product consisting of two VAS (single valve) units connected in series. 2. VAS is certified under EN 161 Class A Group 2 and has obtained the Product ID Number...
- Page 4 Conventions Used in This Manual To prevent injury to the operator and others, and to prevent property damage, the following types of safety precautions are indicated: WARNING Warnings are indicated when mishandling this product might result in death or serious injury. CAUTION Cautions are indicated when mishandling this product might result in minor injury to the user, or only physical damage to the product.
- Page 5 Safety Precautions WARNING Before using the unit, be sure to read this manual in order to use the product correctly. Incorrect installation, adjustment, modification, operation, or maintenance may result in an injury or accident. The unit should be installed, wired, adjusted, inspected, and maintained by specialists having sufficient knowledge and skills related to combustion and industrial furnaces.
- Page 6 CAUTION Use this device within the operating environment ranges listed in the specifications. Not doing so might cause fire or device failure. Use this device only for natural gas, LPG (propane/butane) and air. Using any other gas may corrode metal parts or deteriorate rubber parts, causing gas leaks or other problems.
- Page 7 z Important points for ensuring combustion safety • Both the main valve and pilot valve must have a redundant shutoff configuration. • Connect this device directly to the load terminals (for main and pilot valves) of the burner controller. • Do not provide any mechanical or electrical bypass of this device.
- Page 8 Organization of This User's Manual This manual is organized as follows: Chapter 1. Overview Provides a list of features and model numbers and gives the name of each part. Chapter 2. Restrictions on Installation Describes restrictions on the installation. Chapter 3. Piping and Wiring Describes piping and wiring methods.
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Page 9: Table Of Contents
Contents CE Declaration of Conformity Conventions Used in This Manual Safety Precautions Organization of This User's Manual Chapter 1. Overview 1 - 1 Overview and Features ……………………………………………………………………… 1 1 - 2 Model Number List …………………………………………………………………………… 2 1 - 3 Part Names …………………………………………………………………………………… 4 1 - 4 Exploded View …………………………………………………………………………………... - Page 10 Chapter 6. Troubleshooting „ The valve does not open. …………………………………………………………………21 „ The flow rate is low (a large pressure loss). ……………………………………………21 „ The slow opening operation is disabled. ………………………………………………21 Chapter 7. Joining Two Valves Together „ Method for joining two valves together …………………………………………………23 „...
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Page 11: Chapter 1. Overview
Chapter 1. Overview 1 - 1 Overview and Features The GV-A High-Performance Gas Solenoid Valve for Industrial Applications is used as a safety shutoff valve for gas supplied to gas burners and other gas combustion equipment. This is an imported product from Germany's Elst er GmbH •... -
Page 12: Model Number List
Chapter 1. Overview 1 - 2 Model Number List Base Rated Operation Inspection Additional model Valve size supply switch Description type switch report process number voltage orientation High-Performance Gas Solenoid Valve for Industrial GV-A Applications Valve size 1 (for port sizes 10A, 15A, 20A, 25A) Valve size 2 (for port sizes 25A, 32A, 40A, 50A) Valve size 3 (for port sizes 40A, 50A, 65A) Quick opening type... - Page 13 Chapter 1. Overview • Cable gland set To join two valves with POC together, connect their terminal boxes. “ Valve with POC switch” (page 13) Model number Product name 74921985 Bushings for valve size 1 74921986 Bushings for valve size 2 74921987 Bushings for valve size 3 •...
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Page 14: Part Names
Chapter 1. Overview 1 - 3 Part Names z Valve without a POC switch Maximum ow rate adjustment screw Damper unit *Function inspection screw (Slow opening type only) Terminal box Terminal box cover xing screw Solenoid coil Terminal box cover Blue LED viewing window O-ring A (2 locations) - Page 15 Chapter 1. Overview z Valve with a POC switch Maximum ow rate adjustment screw * Function inspection screw Damper unit (Slow opening type only) Terminal box Terminal box cover Solenoid coil xing screw Terminal Blue LED viewing window box cover Punch-out O-ring A for wiring...
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Page 16: Exploded View
Chapter 1. Overview 1 - 4 Exploded View Parts are shown in exploded view below. The threaded flanges are sold separately. refer to " Parts Sold Separately" (page 2) O-ring A (already attached) Strainer (already attached) Threaded ange Threaded ange (Sold separately) (Sold separately) O-ring A... -
Page 17: Chapter 2. Restrictions On Installation
Chapter 2. Restrictions on Installation „ Installation space Leave a space of at least 20 mm around the device for heat dissipation. For installation near a furnace wall or other location where high temperatures are expected, leave sufficient distance to ensure that the allowable ambient temperature is not exceeded. -
Page 18: X84; Ambient Temperature
Chapter 2. Restrictions on Installation „ Ambient temperature Install where the ambient temperature is between -20 and +60°C. Direction of gas flow Align the flow direction mark on the valve with the actual direction of gas flow. Gas ow „ Filter installation Be sure to install an appropriate filter upstream. -
Page 19: Chapter 3. Piping And Wiring
Chapter 3. Piping and Wiring WARNING After piping and wiring the unit, be sure to perform gas leak inspections before supplying gas. Not doing so might cause fire or device failure. Before wiring, installing, or removing the unit, be sure to disconnect the power and gas supply. Failure to do so could result in an electric shock or gas leak. -
Page 20: Piping Method
Chapter 3. Piping and Wiring 3 - 1 Piping Method Handling Precautions • Do not apply too much force to the valve unit when screwing the pipe. Doing so might damage the unit or cause a gas leak. „ Before piping z Strainer check Check to make sure that the strainer in the inlet on the upstream side of the valve unit is in its proper place. - Page 21 Chapter 3. Piping and Wiring Refer to section "1 - 4 Exploded View, "(page 6) when inserting the valve between the upstream and downstream pipe flanges. Handling Precautions • Push both pipe ends apart and insert the valve, taking care not to damage the O-rings that are attached to each side.
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Page 22: Wiring Method
Chapter 3. Piping and Wiring 3 - 2 Wiring Method „ Valve without a POC switch (1) Decide which knockout to use for the power wiring. (2) Without removing the terminal box cover, use a screwdriver or other tool to tap the plug out. -
Page 23: X84; Valve With Poc Switch
Chapter 3. Piping and Wiring „ Valve with POC switch The wiring procedure is the same as in the preceding section, “Valve without a POC switch. ” With regard to Step (8), however, the following is shown as an example. The terminal numbers 1, 2, and 3 are indicated on the board. -
Page 25: Chapter 4. Adjustments
Chapter 4. Adjustments „ Maximum flow rate adjustment and initial flow rate adjustment Adjustment mechanism Maximum flow rate adjustment Initial flow rate adjustment Slow opening type Approx. 20 to 100% of the Approx. 0 to 70%* maximum flow rate Quick opening type * Initial flow rate <... -
Page 26: X84; Adjusting The Initial Flow Rate (Slow Opening Type Only)
Chapter 4. Adjustments „ Adjusting the initial flow rate (slow opening type only) Changing the initial flow rate also changes the opening time. • Relationship between the time and flow rate The valve gradually opens from the initial flow rate to the maximum flow rate in about 10 seconds. -
Page 27: Chapter 5. Inspection, Maintenance And Disposal
Chapter 5. Inspection, Maintenance and Disposal 5 - 1 Inspection „ Gas leak inspections performed after piping and wiring WARNING The unit should be installed, wired, adjusted, inspected, and maintained by specialists having sufficient knowledge and skills related to combustion and industrial furnaces. After piping and wiring the unit, be sure to perform gas leak inspections before supplying gas. -
Page 28: X84; External And Internal Gas Leak Inspections (Regular Inspection Cycle: Once A Month)
Chapter 5. Inspection, Maintenance and Disposal „ External and internal gas leak inspections (regular inspection cycle: Once a month) Handling Precautions • When performing the inspections, refer to the "Index of Safety Technology of Industrial Gas Combustion Equipment", issued by Japan Gas Association. z External gas leak inspection Close the manual valves (1) and (3) This unit... -
Page 29: Maintenance
Chapter 5. Inspection, Maintenance and Disposal 5 - 2 Maintenance „ Replacing the valve unit WARNING Before wiring, installing, or removing the unit, be sure to turn off the power and gas supply. Failure to do so could result in an electric shock or gas leak. After piping and wiring the unit, be sure to perform gas leak inspections before supplying gas. -
Page 30: Disposal
Chapter 5. Inspection, Maintenance and Disposal 5 - 3 Disposal When disposing of this unit, dispose of it appropriately as industrial waste in accordance with local laws and regulations. -
Page 31: Chapter 6. Troubleshooting
If both the applied voltage and the applied pressure are proper, it may be an internal coil disconnection or an internal unit failure. Replace the valve unit in accordance with " Replacing the valve unit" (page 19). Contact Azbil for any inspection issue. „ The flow rate is low (a large pressure loss). Cause... -
Page 33: Chapter 7. Joining Two Valves Together
Chapter 7. Joining Two Valves Together „ Method for joining two valves together When joining two valves together, the part configuration shown in the following figure applies. First, connect two valve units and stick the pipe into the dedicated pipe flange. Then, connect the dedicated pipe flange to the valve unit. -
Page 34: X84; Method For Connecting The Terminal Boxes
Chapter 7. Joining Two Valves Together „ Method for connecting the terminal boxes Cable gland (supplied) Note • In the case of the non-POC switch type, both of the terminal boxes can be turned. • No cable bushing is required when wiring the upstream side and the downstream side independently from each other. - Page 35 Chapter 7. Joining Two Valves Together (5) Attach the cable gland. (6) For GV-A200 and GV-A300, attach the ground terminal (hexagonal support) back as it was. (Recommended tightening torque: 3.0 N·m) (7) Attach the terminal box cover.
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Page 37: Chapter 8. Specifications
Chapter 8. Specifications „ Specifications Gas types: Natural gas, LPG (propane, butane) (without condensation) *1 Maximum operating pressure: 50 kPa Leakage amount: 40ml/h or less (GV-A100, 200) 60 ml/h or less (GV-A300) (when 50 kPa is applied, for both internal leaks and external leaks) Flow rate adjustment range: - Approx. - Page 38 Chapter 8. Specifications Valve housing: Aluminum alloy Valve sealing material: NBR Dedicated pipe flange screw: Rp (parallel female threads for ISO7-1 pipe) *1 This device is intended for use with the indicated flammable gases. It is not recommended for use with air. *2 The maximum ratings according to the switch manufacturer are 125 Vac / 30 Vdc, 0.1 A (resistive load), but usage at 12–30 Vdc, 2–100 mA is recommended because of the low-current gold switch contacts.
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Page 39: X84; Flow Rate Characteristics (Flow Rate At 15°C, 101.325 Kpa)
Chapter 8. Specifications „ Flow rate characteristics (flow rate at 15°C, 101.325 kPa) For single-valve configuration Model number Connection port Flow rate (m /h) at differential Cv value diameter pressure of 0.25 kPa Specific gravity Specific gravity 0.65 1.53 GV-A100 10A (Rp 3/8) 15A (Rp 1/2) 10.9... - Page 40 Chapter 8. Specifications The graph assumes a specific gravity of 0.65, temperature of 15 °C, and pressure of 101.325 kPa. For single-valve con guration 110: GV-A100 + 10 A ange 115: GV-A100 + 15 A ange 120: GV-A100 + 20 A ange 125: GV-A100 + 25 A ange 225: GV-A200 + 25 A ange 232: GV-A200 + 32 A ange...
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Page 41: X84; External Dimensions
Chapter 8. Specifications „ External Dimensions Model Connection port Dimensions (mm) number diameter GV-A100 10A (Rp 3/8) 15A (Rp 1/2) 20A (Rp 3/4) 25A (Rp 1) GV-A200 25A (Rp 1) 32A (Rp1 1/4) 40A (Rp1 1/2) 50A (Rp 2) GV-A300 40A (Rp1 1/2) 50A (Rp 2) 65A (Rp2 1/2) *1 Threaded flanges (F) are sold separately. - Page 42 Chapter 8. Specifications z Slow opening type, without POC switch Single valve Double valve FLOW FLOW z Slow opening type, with POC switch Single valve Double valve FLOW FLOW...
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Page 43: Appendix
Appendix About European Standards The GV-A high-performance gas solenoid valve for industrial applications has an individual certificate number, CE-0063BO1580, and complies with the requirements of the following product directives: EN 161 (extract) Automatic shut-off valves for gas burners and gas appliances EN 13611 (extract) Safety and control devices for gas burners and gas burning appliances - General requirements... -
Page 44: Supply Pressure Of Town Gas
Appendix Supply Pressure of Town Gas Extracts from The index of safety technology of industrial gas combustion equip- ment by the Japan Gas Association (Jan. 2009) Table 1 Classification of supply pressure Classification Supply pressure Low pressure * The supply gas pressure specified in the general gas supply agreement by individual town gas operators See Table 2. -
Page 45: Explanation Of Terminology
The flow coefficient of the valve, used to indicate its pressure and flow rate characteristics. In addition to C , there is also a “K ” indicator. C is mainly used in the United States, while K is more common in Europe. Azbil uses C =1.17 × K App-3... - Page 49 Revision History of CP-SP-1356E Printed Revised pages Description Feb. 2012 Do not use No.2 terminal of the POC switch in case of slow-open types June 2020 were added. Using No.2 terminal of the POC switch is prohibited in case of slow-open types were added.
- Page 50 Warranty period and warranty scope 1.1 Warranty period Azbil Corporation’s products shall be warranted for one (1) year from the date of your purchase of the said products or the delivery of the said products to a place designated by you.
- Page 51 Although acceleration of the above situation varies depending on the conditions or environment of use of the products, you are required not to use any Azbil Corporation’s products for a period exceeding ten (10) years unless otherwise stated in specifications or instruction manuals.
- Page 52 Specifications are subject to change without notice. (11) 1-12-2 Kawana, Fujisawa Kanagawa 251-8522 Japan https://www.azbil.com 1st edition: Feb. 2014 (K) 3rd edition: Nov. 2020 (K)
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