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  3. 岡谷精立工業
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岡谷精立工業

number of employees95
addressTokyo/Adachi-ku/1-18-1 Senju Midorimachi
phone03-6812-0202
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last updated:Jun 17, 2020
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岡谷精立工業 List of Products and Services

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Hydraulic control equipment Hydraulic control equipment
Room pressure control equipment Room pressure control equipment
Examples of hydraulic control equipment Examples of hydraulic control equipment
Examples of room pressure control equipment Examples of room pressure control equipment
Steel plate inspection and control Steel plate inspection and control
Flavor inspection Flavor inspection
Hydraulic

Hydraulic control equipment

Okaya Seiritsu Industry's hydraulic control equipment is high-powered, durable, and easy to install.

Hydraulic device Electric oil controller SST series

Compact and high-power hydraulic control equipment. Energy-saving type and easy to maintain!

This is a high-end model of the HOP series, which has a cumulative shipment record of over 2,000 units to power plants, steel mills, incinerators, industrial furnaces, etc., since its launch 25 years ago. It is a hydraulic actuator that receives instrumentation signals such as 4-20mA and rotates the operating shaft to the corresponding position. To meet the needs of the steel industry, the electromagnetic switching valve type hydraulic actuator HOP has been enhanced for high speed, high precision, and high torque. Compared to the injection tube method, maintenance is easier. Additionally, it is an energy-saving type with less degradation of hydraulic oil, resulting in lower running costs. 【Features】 ■ High speed and high precision - Operating speed from fully open to fully closed is 5.5 seconds (50/60Hz) - Hysteresis is 0.75% ■ Easy maintenance - Compared to the conventional injection tube method, it has fewer parts and is easier to maintain - Reduces inventory of replacement parts ■ Self-cleaning action of the hydraulic oil in the actuator - The filtration filter (8μ) mounted on the line filter provides a self-cleaning action, improving the cleanliness of the hydraulic oil since opening ■ Energy-saving with unload circuit - Once positioning is complete, the pump enters an unload (no-load) state - Since hydraulic pressure is not constantly applied, it suppresses oil temperature rise and cuts unnecessary power consumption *For more details, please refer to the catalog or contact us.

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Fuel Oil Operative 'HOP4'

Energy-saving yet high power! It can suppress the degradation of hydraulic oil and is easy to maintain. Active in various plants and more.

The "HOP4" is an electric hydraulic servo actuator that controls hydraulic pressure by receiving 4-20mA instrumentation signals from external sources and operates a cylinder using an electromagnetic valve control method. It is suitable for opening degree control of various valves, dampers, and butterfly valves, and is actively used in airflow control, pressure control, and other applications in various plants. When not in operation, the power-down function minimizes power consumption, and the reduced oil temperature rise helps suppress the deterioration of hydraulic oil, contributing to the longevity of the oil. 【Features】 ■ High cost performance ■ Compact design, saving installation space ■ Ensures high torque ■ Highly reliable design ■ Easy one-touch switching of operating direction *For more details, please refer to the documentation. Feel free to contact us with any inquiries.

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Incinerator Case / Hydraulic Control Equipment Regulation Valve RCV Series

We control the combustion of the waste incinerator to enhance combustion efficiency and prevent excessive fuel consumption.

To the Incinerator Manufacturer Purpose of Introduction: Combustion Control for Waste Incinerators The regulating valve is a control valve that maintains a constant pressure difference between two fluids. The regulating valve operates without a power source, with the pressure of the reference side fluid opposing the pressure of the following side fluid, designed so that the pressure of the following side fluid is slightly higher than that of the set spring. A diaphragm is connected to an internal valve, and when a pressure difference occurs between the reference side fluid and the following side fluid, as well as the set pressure, the diaphragm expands and contracts, causing the internal valve to move. The internal valve adjusts the flow rate of the following side fluid by changing the valve opening, ensuring that the pressure remains consistently higher than the set pressure. As described above, it is a self-operated control valve that moves based on differential pressure, making it a unique and innovative control valve. In burners that combust heavy oil, an atomizing burner is used to spray steam or air, and by using this device to maintain the atomizing steam or air at a slightly higher pressure than that of the heavy oil, a good combustion state can be maintained. *For more details, please feel free to contact us.

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Sugar Factory Case Study / [Hydraulic Control Equipment] COP Series

Maintains efficient combustion of the boiler.

Control the exhaust damper of the sugar extraction boiler to maintain efficient combustion of the boiler. 【Features】 ○ Control is possible without converters or regulators ○ Direct input of signals necessary for control ○ Low instrumentation costs ○ Powerful hydraulic power ○ Operation is reliable without troubles ○ Adoption of hydraulic injection pipes ○ Resistant to dirt ○ Excellent durability ○ Easy installation ○ Mechanical work involves only linking connections with the operating terminal and piping for input pressure ○ Electrical work involves only wiring for the motor power supply ○ A wide variety of models available ○ A wide range of additional equipment can be installed ○ Functions such as manual operation, emergency operation, and remote operation can be added ○ Installation of pressure switches, limit switches for signals, and opening degree transmitters is possible *For more details, please refer to the PDF materials or feel free to contact us.

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Examples of Boilers for Palm Oil Extraction / [Hydraulic Control Equipment] COP Series

Maintains efficient combustion of the boiler.

Control the exhaust damper of the palm oil extraction boiler to maintain efficient combustion of the boiler. 【Features】 ○ Control is possible without converters or regulators ○ Direct input of signals necessary for control ○ Low instrumentation costs ○ Powerful hydraulic force ○ Operation is reliable without troubles ○ Adoption of hydraulic injection pipes ○ Resistant to dirt ○ Excellent durability ○ Easy installation ○ Mechanical work involves only linking connections to the operating terminal and piping for input pressure ○ Electrical work involves only wiring for the motor power supply ○ A wide variety of models available ○ A wide range of additional equipment can be installed ○ Functions such as manual operation, emergency operation, and remote operation can be added ○ Pressure switches, limit switches for signals, and opening degree transmitters can be installed *For more details, please refer to the PDF document or feel free to contact us.

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Boiler Case / [Hydraulic Control Equipment] RCV Series

Optimally controls combustion efficiency.

By maintaining a constant pressure difference between the spray steam or air pressure and the oil pressure in the oil-fired boiler (burner), the combustion efficiency is optimally controlled. 【Features】 ○ Always maintains a constant pressure difference between the two fluids ○ The bellows is connected to an internal valve ○ When a difference occurs between the pressure difference and the set pressure, the bellows expands and contracts ○ Self-regulating control valve that moves the valve based on the differential pressure ○ Unique and innovative control valve *For more details, please refer to the PDF document or feel free to contact us.

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Industrial Furnace Case / [Hydraulic Control Equipment] VOR Series

We will perform precise flow control of gas in carbonization furnaces and the like.

This variable port valve is a rotary type control valve that adjusts the flow rate by rotating the valve shaft. Additionally, it has a structure that allows the sleeve, which is combined with the valve shaft, to be moved, easily changing the opening area of the port through which the fluid passes. The maximum flow rate is determined by the movement of the sleeve, and the optimal flow rate is adjusted by the rotation of the valve shaft. Generally, when performing fluid control, the performance of the control valve affects the controllability, leading to the following conventional issues: - The pressure before and after the control valve differs between actual operating conditions and design conditions. - The Cv value of the control valve is determined for each diameter, and it can only be selected in stages, making it difficult to choose the optimal Cv value. - The range of flow rates used may exceed the valve's rangeability. By using this variable port valve, these issues can be resolved. *For more details, please refer to the PDF materials or feel free to contact us.*

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Incinerator Case / [Hydraulic Control Equipment] COP Series

We control the gas temperature to prevent the filter from breaking due to high-temperature gas.

The exhaust gas from the incinerator is passed through a filter to remove harmful components, but the gas temperature is controlled to prevent the filter from breaking due to high-temperature gas. 【Features】 ○ Control is possible without converters or regulators ○ Direct input of signals necessary for control ○ Instrumentation costs are low ○ Powerful hydraulic force ○ Operation is reliable without troubles ○ Adoption of hydraulic injection pipes ○ Resistant to dirt ○ Excellent durability ○ Easy construction ○ Mechanical work involves only linking connections with the operating terminal and piping for input pressure ○ Electrical work involves only wiring for the motor power supply ○ A wide variety of models available ○ A wide range of additional equipment can be installed ○ Functions such as manual operation, emergency operation, and remote operation can be added ○ Pressure switches, limit switches for signals, and opening degree transmitters can be installed *For more details, please refer to the PDF document or feel free to contact us.

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Sewage Treatment Plant Case / [Hydraulic Control Equipment] COP Series

The air supply pressure will be controlled in ECO mode.

The fan motor is controlled by ECO to prevent overload on the fan pressure. 【Features】 ○ Control is possible without converters or controllers ○ Direct input of signals necessary for control ○ Instrumentation costs are low ○ Powerful hydraulic force ○ Operation is reliable and trouble-free ○ Adoption of hydraulic injection pipes ○ Resistant to dirt ○ Excellent durability ○ Easy installation ○ Mechanical work involves only linking connections with the control terminal and piping for input pressure ○ Electrical work involves only wiring for the motor power supply ○ A wide variety of models available ○ A wide range of additional equipment can be installed ○ Functions such as manual operation, emergency operation, and remote operation can be added ○ Pressure switches, limit switches for signals, and opening degree transmitters can be installed *For more details, please refer to the PDF materials or feel free to contact us.

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Hydraulic control equipment Flow Control Unit FCU series

It supports various controls with a variety of actuators and the selection of valve sizes.

You can combine a wide variety of controllers with butterfly valves and ball valves of various sizes. When combined with the control valves (flow control valves, ratio control valves) from Okaya Seiritsu Industry Co., Ltd., they can be used for applications such as burner air-fuel ratio control. The flexibility in the combination of controllers and valve sizes and types allows for adaptation to various applications, enabling high-precision control of flow and pressure. 【Features】 ○ Flexible combination of controllers and valve sizes/types ○ Adaptable to various applications ○ High-precision control of flow and pressure ○ Usable with high torque and high speed ○ Compact *For more details, please refer to the PDF document or feel free to contact us.

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Hydraulic control equipment Valport valve VOR series

This is a control valve that can easily adjust the valve capacity to match the operating conditions.

This variport valve is a rotary type control valve that adjusts the flow rate by rotating the valve shaft. Additionally, it features a structure that allows the sleeve, which is combined with the valve shaft, to be moved, thereby easily changing the opening area of the port through which the fluid passes. The maximum flow rate is determined by the movement of the sleeve, and the optimal flow rate is adjusted by the rotation of the valve shaft. In general, when performing fluid control, the performance of the control valve affects the controllability, leading to the following conventional issues: - The pressure before and after the control valve differs between actual operating conditions and design conditions. - The Cv value of the control valve is determined for each diameter, and it can only be selected in stages, making it difficult to choose the optimal Cv value. - The range of flow rates used may exceed the valve's rangeability. By using this variport valve, these issues can be resolved. *For more details, please refer to the PDF materials or feel free to contact us.*

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Hydraulic control equipment, flow control valve, RCV series

A valve that can maintain a constant difference between the variable reference pressure and the controlled fluid pressure.

The differential pressure valve is a control valve that maintains a constant pressure difference between two fluids. It does not have a power source; instead, the pressure of the reference side fluid acting on the bellows counteracts the pressure of the following side fluid, which is designed to be slightly higher than the set spring pressure. The bellows is connected to an internal valve, and when a pressure difference occurs between the reference side fluid and the following side fluid, the bellows expands or contracts, causing the internal valve to move. The internal valve adjusts the flow rate of the following side fluid by changing the valve opening, ensuring that the pressure remains consistently higher than the set pressure. As described above, it is a self-operated control valve that moves based on differential pressure, making it a unique and innovative control valve. In burners that combust heavy oil, such as those used in boilers, an atomizing burner is employed to spray steam or air. By using this device to maintain the atomizing steam or air at a slightly higher pressure than the heavy oil pressure, good combustion conditions can be maintained. 【Features】 - Maintains a constant pressure difference between two fluids - The bellows is connected to an internal valve - The bellows expands or contracts when a difference occurs between the pressure difference and the set pressure - A self-operated control valve that moves based on differential pressure - A unique and innovative control valve *For more details, please refer to the PDF document or feel free to contact us.

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Hydraulic control equipment Flow control valve FCV series

It is a valve that can control the flow rate consistently even when pressure fluctuations occur.

The flow control valve is a self-powered flow control valve that does not have a power source. The differential pressure before and after the variable orifice, caused by the flow of fluid (the pressure difference between the primary and secondary sides), acts on a piston or diaphragm and is designed to balance with a set spring. The piston or diaphragm is connected to an internally integrated valve, and it automatically adjusts the valve opening so that the differential pressure before and after the variable orifice is always equal to the set pressure, thereby keeping the flow rate constant. The required flow rate is adjusted by the opening of the variable orifice. Furthermore, changes in flow rate at the same opening, that is, changes in valve capacity, can also be easily made by adjusting the opening area of the variable orifice, making it a self-powered flow control valve and a unique, groundbreaking control valve. 【Features】 ○ Self-powered flow control valve without a power source ○ Constant flow control ○ The differential pressure before and after the variable orifice is always equal to the set pressure ○ The required flow rate is adjusted by the opening of the variable orifice ○ Changes in valve capacity can also be easily made by adjusting the opening area of the variable orifice *For more details, please refer to the PDF document or feel free to contact us.

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Hydraulic control equipment Electric oil controller Explosion-proof type

It can be made into a product compatible with intrinsically safe explosion-proof structural design that can be installed in hazardous locations.

When using electrical equipment in hazardous locations where flammable gases or flammable liquid vapors are released into the air, such as in oil refining and chemical plants, it is necessary to use "explosion-proof equipment" designed to prevent explosions. The EOP series and COP series electric oil actuators can be modified with motors, force coils, displacement transmitters, etc., to meet the requirements for intrinsically safe explosion-proof structures suitable for installation in hazardous locations. However, the motors will be of the pressure-resistant explosion-proof type. Please refer to the EOP series for the equipment configuration. 【Features】 ○ Achieves application in hazardous locations ○ Can be modified to meet intrinsically safe explosion-proof structure requirements ○ Motors are of the pressure-resistant explosion-proof type ○ Intrinsically safe explosion-proof structure: Ex ib ~B T4 * For more details, please refer to the PDF document or feel free to contact us.

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Hydraulic control equipment large hydraulic unit

Hydraulic controller optimally designed for your plant - Large hydraulic unit.

In the case that the power or operating speed is insufficient with the HOP and EOP series electric oil controllers, we will manufacture the optimal hydraulic unit for your equipment. Additionally, we can provide a system that combines the servo amplifier and displacement transmitter (cylinder position detector) from Okaya Seiritsu Industry Co., Ltd. to configure a servo system, and we can also produce control panels that house electronic devices such as servo amplifiers and PLCs that control the hydraulic unit. 【Features】 - Designed considering space issues at the installation site, operability, and maintenance - Detailed response to customer needs - Large hydraulic units utilize variable displacement piston pumps - Capable of setting the required pressure and discharge volume - Energy-saving type that achieves energy conservation and reduction of loss power *For more details, please refer to the PDF materials or feel free to contact us.

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Hydraulic control equipment Servo actuators SOP series

Electric hydraulic servo actuator that achieves high precision and high-speed response operation.

This is a high-performance type of jet pipe (EOP type) electric oil actuator. It incorporates electrical feedback and a servo amplifier to form a servo system, replacing the mechanical restoration mechanism, allowing for high precision and fast response. Additionally, since the feedback signal is detected electrically, it can also be configured as a cylinder separation type. 【Features】 - Achieves high-speed response - Can be configured as a cylinder separation type, allowing for flexible cylinder selection - Operates reliably with powerful performance - Minimal occurrence of malfunction due to debris - Wide variety of models available - A wide range of additional equipment can be installed - Manual operation, emergency operation, and remote operation devices can be installed - Pressure switches, limit switches, and opening degree transmitters can also be installed *For more details, please refer to the PDF document or feel free to contact us.

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Hydraulic Control Equipment Package Controller COP Series

It is a hydraulic controller that operates independently without relying on other devices.

It is a hydraulic controller equipped with a pressure-sensitive part that can directly receive the signals necessary for control, allowing it to operate independently on-site without relying on other equipment. Hydraulic oil generated by a hydraulic pump is ejected from the injection pipe (hydraulic injection pipe relay mechanism). The pressure-sensitive part that receives the signal causes the injection pipe to vibrate, sending hydraulic oil into the cylinder, which extends and retracts the cylinder rod. This is connected to an operating shaft that can be rotated or moved in a straight line. By combining a wide variety of models with the pressure-sensitive part, we can meet various needs. 【Features】 ○ Control is possible without converters or regulators ○ Direct input of signals necessary for control ○ Lower instrumentation costs ○ Powerful hydraulic force ○ Operation is reliable and trouble-free ○ Excellent durability *For more details, please refer to the PDF document or feel free to contact us.

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Hydraulic control equipment Electric oil controller EOP series

Compared to other servo valve methods, it is more resistant to hydraulic oil contamination and has excellent durability.

This is an actuator that receives instrumentation signals such as 4-20mA and converts them into mechanical movements, such as the rotation of an operating shaft or linear motion of the shaft, proportional to the signals received. Hydraulic oil generated by a hydraulic pump is ejected from the injection pipe (hydraulic injection pipe relay mechanism), and the force coil that receives the instrumentation signal vibrates the injection pipe, sending hydraulic oil into the cylinder, causing the cylinder rod to extend and retract. This also rotates or moves the connected operating shaft in a linear motion. The movement of the operating shaft is fed back to the injection pipe through a mechanical restoration mechanism. In place of the mechanical restoration mechanism, we also offer a high-density, responsive SOP series that forms a servo system with electrical feedback. 【Features】 - Operation is reliable and trouble-free due to the powerful force of hydraulic power. - Each unit is robustly constructed. - The use of hydraulic injection pipes makes it resistant to contamination from hydraulic oil and highly durable. - Installation is simple. - Electrical work involves only wiring for the motor's power supply and input signals. - Mechanical work requires only linking the operating end. *For more details, please refer to the PDF document or feel free to contact us.

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Hydraulic control equipment Electric oil controller HOP series

Energy-saving high-power electric hydraulic servo actuator

This is a hydraulic actuator that receives instrumentation signals such as 4-20mA and rotates the operating shaft to the corresponding position. The E/E (electric/electric) positioner, hydraulic path switching valve, hydraulic pump, and cylinder are compactly integrated. The positioner receives external instrumentation signals and recognizes the deviation from the current position. The actuator switches the hydraulic path via the switching valve in the direction to eliminate this deviation, rotating the operating shaft to the position corresponding to the signal. The rotation speed of the operating shaft is based on our unique deviation proportional speed operation, achieving stable positioning without overshoot. 【Features】 - The powerful hydraulic operation ensures reliability without troubles. - Installation is simple. - A wide variety of models are available to choose from according to the required torque. - It has a high energy-saving effect and a mechanism that minimizes the degradation of hydraulic oil. - The operating direction can be easily switched with a switch. - A wide range of additional equipment can be installed. *For more details, please refer to the PDF materials or feel free to contact us.

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Electric hydraulic servo actuator "Electric Oil Controller HOP4" *Materials available

Numerous achievements in steelmaking, cement, and chemical plants. For air volume control and pressure control. Now available in a smaller size than conventional products.

The "Electric Oil Control Device HOP4" is an electric hydraulic servo actuator that receives instrumentation signals such as 4-20mA and rotates the operating shaft to the corresponding position. The "HOP-SST series," boasting a shipment of 2,000 units, has been further miniaturized. This not only saves installation space but also makes it easy to update existing equipment. While maintaining conventional functions, it achieves a reasonable price. It is effective for controlling air volume and pressure in plants. 【Features】 ■ High cost performance ■ Adopts electromagnetic valve control method ■ Less deterioration of hydraulic oil ■ Direction of operation can be changed with one touch ■ Simple mechanism for easy maintenance *For more details, please refer to the materials. Feel free to contact us as well.

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Diesel fuel operator (can use water-glycol based hydraulic oil)

Even in environments where mineral-based oils could not be used, electric oil controllers are effective.

The Okaya Seiritsu electric oil controller can also be used with water-glycol-based hydraulic fluids. ◆ Flame Retardant Due to its superior flame retardancy compared to mineral oils, it can be used in a wide range of environments (fire prevention, compliance with fire safety regulations, etc.) ◆ Stability It is resistant to heat and oxidation, making it less prone to degradation, and has minimal viscosity changes in response to temperature fluctuations, allowing for stable control. ◆ Oxidation Prevention Since it contains vapor-phase rust inhibitors, it exhibits rust prevention even on surfaces that do not come into contact with the hydraulic fluid.

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