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  2. Industrial Machinery
  3. 正英製作所 本社、東京支店、名古屋営業所、大阪支店、広島支店、九州支店
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正英製作所 本社、東京支店、名古屋営業所、大阪支店、広島支店、九州支店

EstablishmentMarch 3, 1956
capital8800Ten thousand
number of employees100
addressNara/Ando-cho, Ikoma-gun/Kasa-me 520 [Horyu-ji Center]
phone0743-57-2244
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last updated:Jan 17, 2025
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  • Products/Services(76)
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正英製作所 List of Products and Services

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Hydrogen gas burner Hydrogen gas burner
Ammonia burner Ammonia burner
Gas burner (city gas/LPG) Gas burner (city gas/LPG)
Combustion equipment and gas appliances Combustion equipment and gas appliances
■ Hot air generation device (gas, electric, indirect hot air) ■ Hot air generation device (gas, electric, indirect hot air)
Food heating burner Food heating burner
Gas burner for heat treatment furnace Gas burner for heat treatment furnace
Gas burner for aluminum industrial furnaces Gas burner for aluminum industrial furnaces
Coating-related equipment Coating-related equipment
Exhaust gas treatment system Exhaust gas treatment system
Industrial heating furnace Industrial heating furnace
Heat treatment furnace Heat treatment furnace
Aluminum melting furnace and holding furnace Aluminum melting furnace and holding furnace
Industrial robot teaching Industrial robot teaching
Institute of Thermal Technology Institute of Thermal Technology
Combustion

Combustion equipment and gas appliances

We offer a variety of piping equipment that can be used for gas and air piping.

Variable Port Valve / Proportional Valve SVP Series 【CAD】

The adjustment of the valve port is easy, allowing for stable control of gas flow (combustion)!

The proportional valve "SVP Series" is a control valve that linearly controls gas flow. Unlike conventional butterfly valves, it adopts a rectangular port design, allowing for flow characteristics that are closer to linear, enabling stable flow (combustion) control. The area of the valve port can be set to any size with a single adjustment knob, making it easy to accommodate changes in gas type (caloric conversion). Flow control and high-cut valve functions can be achieved with just one SVP unit! 【Features】 - Achieves flow characteristics that are closer to linear, enabling stable flow (combustion) control. - Can significantly correct differences in flow characteristics due to variations in diameter. - The area of the valve port can be set to any size with a single adjustment knob. - Easily accommodates changes in gas type (caloric conversion). - Adjustment of the valve port can be done with one knob and includes a locking screw. We offer a lineup of gas proportional valves for various piping sizes. (20A, 25A, 40A, 50A, 80A) *2D CAD (DXF format) and 3D CAD (STEP format) data are also available. *For more details, please refer to the PDF materials or feel free to contact us.

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Differential Pressure Flow Meter Orifice Meter SOM Series [2D CAD]

Check for energy-saving combustion! Installed in the piping, it measures the flow rate of fuel gas and combustion air for gas burners. A lightweight, inexpensive, and easy-to-install gas flow meter.

The "Orifice Meter" is installed in the middle of the piping and easily measures the flow rate within the pipe by measuring the pressure (differential pressure) between two pressure measurement points. The installation involves threaded piping, but the main body has a bolted flange shape, allowing for the removal of the orifice plate. Switching gas types can also be accommodated by replacing the plate. When installed on the gas line of a burner, it allows for easy checking of combustion volume and is convenient when there is no space for a gas meter or digital flow meter, or when measurements need to be taken in existing piping. 【Features】 ■ Inexpensive ■ Lightweight and very easy to install ■ Simple and robust structure ■ Prevents vibration combustion in cases of low burner head pressure ■ Installing on both gas and air allows for air-fuel ratio management, which is useful during trial operation adjustments. ■ Contributes to energy savings through proper management of air-fuel ratios! ■ The ability to set the plate diameter allows for arbitrary differential pressure, making it useful for adjusting pressure loss in piping and preventing gas burner over-input as a high cut. ■ For individual flow monitoring of multiple burners *For more details, please refer to the PDF document or feel free to contact us.

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Venturi Mixer VM Series [2D/3D CAD]

A gas and air mixing mixer used for combustion in gas burners. The structure is a venturi mixer that adjusts the flame power while maintaining the mixing ratio.

**Structure of the Mixer** The Venturi mixer utilizes the negative pressure generated when air blown from the combustion blower passes through the nozzle inside the mixer to draw in and mix gas. The mixed gas is supplied to the gas burner connected by piping for combustion. **Corresponding Gas Burners** Various premixed burners (forced mixing burners) Our burner models: SR, SF, FF, CBX, UL, pipe burners, pian burners, BS, metal knit burners (MNB), metal mat burners (MFT), surface combustion burners, and many others. **Advantages** Combustion adjustment is easy. Since the fuel gas is adjusted to atmospheric pressure by a zero governor, control of the gas line is unnecessary, and combustion can be controlled solely by the control of the combustion air line. The gas flow will increase or decrease in accordance with the air flow, allowing the air-fuel ratio to be maintained at a constant level. Components can be disassembled, providing excellent maintenance and making inspection and cleaning easy. We offer piping sizes from 15A to 80A, suitable for various capacities of burners.

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Backflow prevention valve / Check valve CV series [2D/3D CAD]

A backflow prevention valve that can be used in gas piping for combustion equipment such as city gas and LPG. It operates at low differential pressure and prevents backflow of combustion air.

【Purpose】 Prevention of backflow in gas lines 【Features】 It operates even at low differential pressure due to its structure with low pressure loss. Available for pipe sizes from 15A to 100A. Installation can be done in the "horizontal direction" and in the "vertical direction with flow from bottom to top." 【Gas Used】 - City gas (13A) - Propane (LPG) - Please inquire for other gases. *Please refrain from using with air or oxygen piping as it contains NBR. CAD drawings are also available for download. 2D (DXF), 3D (STEP)

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Butterfly Valve BV Series [2D/3D CAD]

For adjusting the flow rate of air for gas burner combustion. Available in a "manual type" with a lockable opening and a "control type" that can be linked to a control motor.

The SHOEI Butterfly Valve Series features butterfly valves with an opening degree indicator for flow adjustment. The BVM "Manual Hand-operated" model allows the opening degree setting to be fixed with a locking screw and has a full-port design that minimizes pressure loss. The BVC "Control Valve" can be linked with control motors (compatible with various manufacturers) and offers a wide range for reduced port and handle adjustments, providing high flow control performance. 【Product Specifications】 ◇ The fluid used is air (for combustion), city gas (13A, natural gas, LNG), and propane gas (LPG). ◇ The fluid temperature is below 60°C. ◇ The fluid pressure is below 10 kPa. (Please consult us if you are considering specifications outside of the above.)

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Weather resistance × durability × workability! Metal flexible hose [Showfre]

A trusted brand with a proven track record that combines corrosion resistance, workability, durability, and airtightness.

SHOEI FLEX is a metal flexible hose (metal flexible pipe) that combines 【corrosion resistance × workability × durability × airtightness】. It is a product certified by inspection associations for city gas and LPG. 【Features】 ■ Excellent corrosion resistance The tube is made of stainless steel (SUS304), which is highly resistant to corrosion. ■ Quick workability It is easy to bend, making alignment and positioning in tight spaces easy to install. ■ High weather resistance and durability Even in harsh external environments exposed to sunlight and rain, it has excellent weather resistance due to polyester resin (powder coating) and similar corrosion resistance to epoxy resin. ■ Perfect airtightness The gas connection part has a flare structure. It includes an O-ring for additional airtightness, ensuring complete airtightness. 【Sizes】 15A, 20A *Various lengths (L) are available. 【Gas types/models】 LPG → SHOEI FLEX (P) 13A → SHOEI FLEX (N) *Protective covers are also available. *There is a wide variety of connection fittings. *For more details, please refer to the catalog.

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Gas Burner Combustion Pre-mixed Package Mixer [PM Series]

This is a mixed gas burner top with a safety device that controls it for optimal combustion! It can be customized according to the equipment and application.

The package mixer series is an all-in-one combustion system that can burn various premixed gas burners simply by connecting gas and electricity. Thanks to the one-touch volume adjustment, there is no need for complicated flame intensity adjustments. It supports a range of operations from ON-OFF combustion to high-level electronic proportional control. Additionally, it uses a DC fan for the combustion fan, allowing for fine adjustments and control. It is compactly equipped with combustion safety devices such as automatic ignition, flame detection, and combustion air pressure monitoring. Despite its small size, it is designed for full power and is highly effective in food factories! It serves as a great companion for metal knit burners used for mold preheating! The configuration of the combustion equipment can be customized according to the device and application. *Combustion tests and on-site demonstrations are also available. Please feel free to contact us. 【Features】 ■ Introduces an efficient combustion system to solve energy-saving challenges ■ A mixing unit with safety devices that control the premixed burner top for optimal combustion ■ Ideal for surface combustion burners such as metal knit burners ■ Can be set to the required flame intensity with one touch ■ Supports a range of operations from ON-OFF combustion to high-level electronic proportional control ■ Easy fuel conversion from oil burners with simple piping

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Venturi Regulator VR Series [2D/3D CAD]

A Bunsen-type mixer that allows for power adjustment simply by changing the fuel gas pressure! It enables the construction of a gas burner combustion line at a low cost without the need for a combustion blower.

**Features** The Venturi regulator is a Bunsen-type mixer that creates a mixed gas by drawing in atmospheric air due to the negative pressure generated when gas is ejected from the nozzle. It is simple, consisting only of gas line piping. **Compatible Burners** - Pipe burner - Straight frame burner (SF burner) - SR top burner It can also be used with other Bunsen-type gas burners. There are many optional parts available, so please check the catalog for details. CAD drawings are available for download. 2D (DXF), 3D (STEP)

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Manual Lock Butterfly Valve BVM [2D/3D CAD]

For adjusting the flow rate of air for gas burner combustion. The opening degree display is easy to see, and it features a "manual" butterfly valve that allows for opening degree locking. [SHOEI Butterfly Valve]

The SHOEI butterfly valve series is a butterfly valve with an opening degree indicator for flow adjustment. The "BVM" manual type allows the opening degree setting to be fixed with a locking screw and features a full-port design with minimal pressure loss. 【Product Specifications】 ◇ The fluid used is air (combustion air), city gas (13A, natural gas, LNG), or propane gas (LPG). ◇ The fluid temperature is below 60°C. ◇ The fluid pressure is below 10 kPa. (Please consult us if you are considering specifications outside of the above.)

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Control Butterfly Valve BVC [2D/3D CAD]

For adjusting the airflow for gas burner combustion. A control valve for "control use" that can be linked with a control motor. [SHOEI Butterfly Valve]

The SHOEI Butterfly Valve Series is a butterfly valve with an opening degree indicator for flow adjustment. The "BVC" control valve can be used in conjunction with control motors (compatible with various manufacturers) and features a wide range for reduce port and handle adjustments, providing high flow control performance. 【Product Specifications】 ◇ The fluid used is air (for combustion), city gas (13A, natural gas, LNG), and propane gas (LPG). ◇ The fluid temperature is below 60°C. ◇ The fluid pressure is below 10 kPa. (Please consult us if you are considering specifications outside of the above.)

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Indirect hot air generator (packaged type) AH-BX series

Since it is packaged, on-site construction is shortened! A hot air generator that provides a wide range of clean hot air, from high air volume to low air volume!

【Features】 ◇ It is a packaged type that is pre-assembled in the factory. ◇ It achieves a thermal efficiency of 90%. ◇ It is compatible with high-temperature hot air circulation in the heat dissipation line. ◇ It has high maintainability, equipped with inspection doors in various locations. ◇ The gas burner is equipped with safety devices such as automatic ignition and flame detection, allowing for safe use.

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Pipe burner

We also manufacture custom lengths, shapes, and pipe diameters. Equipped with a unique retention flame protection mechanism, it provides a stable flame.

Equipped with a unique retention flame mechanism, it achieves a stable flame. It allows for safe combustion control with automatic ignition and flame detection. 【Features】 ◇ Flexible design tailored to the length of the pipe and the required combustion volume ・Please let us know the desired length of the combustion surface and the combustion volume. ◇ Stainless steel options are also available. ◇ A wide variety of choices from the number of units to connection shapes ・ We can flexibly accommodate from single to multiple units. ・ Connection shapes include I-type, T-type, L-type, H-type, and more. ・ Pipe diameters range from 15A (1/2B) to 50A (2B). (Please consult us for other sizes.) ◇ Automatic ignition and flame detection options are also available. ◇ Benzene combustion without the need for a combustion blower is possible.

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