ENERGY

Supporting energy sectors such as electric power plants
More safety.
More convenience.

High-temperature, high-pressure steam valves, safety valves to protect pressure containers, super long-lasting butterfly valves for sea water.
We contribute to stable energy production by offering our experience gained through a long period of business operations and highly specialized knowledge.
Our high-quality, on-site maintenance service will help customers to use our valves for a long time after delivery.
As we have abundant experience in dealing with industrial machinery, we are able to make proposals not only for valves but also for equipment that configure various energy plants such as heat exchangers, wear-resistant solutions for ash treatment equipment and fuel supply systems.
Our highly trusted installation results are proof that our company has been with our customers’ power plants every step of the way.

Examples of Our Products

Okano Valve Mfg. Co., Ltd.The only valve manufacturer that supports the whole production process from material to products.

High-pressure steam safety valve

They are a proud specialist of valves for high-quality, high-pressure steam lines, and boast excellent technical capabilities and a proven record of working with many thermal power/nuclear power stations. They offer enhanced maintenance services on site.
On-site special skill without cutting/welding work for valves and motor operated valve diagnosis are avairable. They make contributions to society all through a valve’s life cycle.

Karatsu Valve Industry Co., Ltd.A trusted brand for various steam line products for thermal/geothermal power plants.

Main steam stop valve

As a special manufacturer of valves for medium to low-pressure steam lines, they provide on-site maintenance service. They are highly trusted by customers in the electric power plant industry and users who need such products.

Okasyo Service Co., Ltd.On-site maintenance of steam valves

On-site valve maintenance

They are a group of specialists who maintain various valves on-site from high-pressure to low-pressure steam lines. A wide variety of valves made by various manufacturers such as safety valves and motor operated valves can be repaired without having to remove them from the production lines. They are certified company for safety/audit management systems by electric power plants. Not only do they have experience in their home base of Kanto, they also have many proven experience throughout Japan.

Tohkai Shipbuilding & Engineering Co., Ltd.Heat exchanger specialist

Low-Pressure Feed Water Heater

Highly trusted shell & tube-type heat exchanger they offer solid production control and cost performance that pass any welding tests for power electric facilities. A wide variety of products such as oil coolers and gland steam condensers. Any repair items brought back to their factory will be returned after a short work period.

Product Line-up

Stopping

Valves/Safety valves, etc.
Protecting

Valve Repairs/Leakage Repairs
Bearing

Response to Electricity Business Act
Connecting

Energy-saving/Pipe System Support
Exchanging

Low-Pressure Feed Water Heater
Measuring

Flow Meters/Level transmitter
Transproting

Coal Conveyors/Ash Conveyors
Mixing

Humidifier / Moisturize mixer
Eliminating

Silencers
Sorting

Dust Collectors/Retainers
Modifying

Coal Crushers
Other

Chimneys, etc.

Main Suppliers

Valve/Valve Maintenance

Okano Valve Mfg. Co., Ltd.
KITZ Corporation
Fuji Furmanite Co., Ltd.
HISAKA WORKS, LTD.
Karatsu Valve Industry Co.,Ltd.
FURUKAWA KOGYO Co.,Ltd
Fushiman Co., Ltd.
TLV CO.,LTD
Okasyo Service Co., Ltd.
SHOWA VALVE CO., LTD.
NIHON KOSO Co., Ltd.
Emerson Valves and Controls Japan Co., Ltd
SUPERO SEIKI Co., Ltd.
Takaya Mfg. Co., Ltd.
SAWAMURA VALVE Co., Ltd.
NAKAYAMA STEEL WORKS, LTD.
RISYO VALVE WORKS CO., LTD.
Nippon Ball Valve Co., Ltd.
MIYAWAKI Inc.
WASINO KIKI CO., LTD.
KIYOMOTO KINNEY CO., LTD.

Valve equipment

Shin-Nichinan Co., Ltd.
NIPPON GEAR CO., LTD.
SEIBU ELECTRIC & MACHINERY CO., LTD.
Shimadzu Industrial Systems Co., Ltd.
KOHAN KOGYO CO., LTD.

Various sealing material

TANKEN SEAL SEIKO CO.,LTD
NIPPON PILLAR PACKING CO., LTD.
VALQUA, LTD.
NICHIAS Corporation.,

Pumps

KANSUI PUMP CO., LTD.
FURUKAWA INDUSTRIAL MACHINERY SYSTEMS CO., LTD.
TAIKO KIKAI INDUSTRIES CO., LTD.
IWAKI CO., LTD.
HEISHIN Ltd.
YAMAMOTO SUIATU KOGYOSHO CO., LTD.
MALHATY PUMP MFG.CO., LTD.

Measuring instrumentｓ

OVAL Corporation
Matsushima Measure Tech Co., Ltd.

Other

ING SHOJI CO., LTD.
MIURA CHEMICAL EQUIPMENT CO., LTD.
Sugimoto Industry Inc.
GOOD JOB Co., Ltd.
Sanwa Tekki Corporation
japan kiryoku Co., Ltd.
Sanko Industry Co., Ltd.
Toyomic Co., Ltd.
Fike Japan Corporation
TAIHEI DENGYO KAISHA, LTD
SHINKO INSPECTION & SERVICE CO., LTD.
HORYO INDUSTRIAL CO., LTD
BS&B Safety Systems Japan Co., Ltd
TOKAI PLANT ENGINEERING CO., LTD.
Taiyo Joint Co., Ltd.
SVF Co., Ltd.
Sasakura Engineering Co., Ltd
NIHON KENSETSU KOGYO CO., LTD.
Yamauchi Mfg. Co., Ltd

Valves	Various cast and forged steel valves for high temperature and high pressure steam, ship valves, valves for the oil and gas industry
Safety valves, relief valves	Various safety valves (high-pressure safety valves for power boilers, medium to low-pressure safety valves), electromagnetic relief valves
Motor operated valves and other automatic valves	Various automatic valves (Motor operated valves, pneumatic valves, etc.)
Specialized valves	Valves for the nuclear power industry, Specialized valves attached to turbines, Extraction check valves, Specialized geothermal valves, Steam converter valves
Various dampers, slide gate dampers	Various dampers (high-temperature smoke dampers, etc.), slide gate dampers
Butterfly valves, Ball valves	Large butterfly valves, marine butterfly valves, metal ball valves
Rupture discs	Rupture discs

Various valve maintenance	Various valve maintenance, special on-site work related to valves (sheet replacements, etc.)
Flange facing	On-site flange facing
Online leak sealing	Online leak sealing
Inspection of automatic valve actuators	Inspection and repair of automatic valve actuators
Hard facing(wear-resistant, corrosion-resistant build up welding, thermal spraying)	Hard facing(wear-resistant, corrosion-resistant build-up welding), thermal spraying, hard facing for fuel discharge equipment, hard facing for roller mill, hard facing/build-up welding for screw turbine and shaft, corrosion-proof FRP lining
Ceramic-lined pipes	Ceramic-lined pipes, ceramic products
Fixtures for heat exchangers	Narrow pipes for heat exchangers, washing brushes for heat exchanger narrow pipes, stopper plugs
Other maintenance services	Boiler maintenance, on-site bolt and other removal work, chemical cleaning

Welding work collectively support	Welding work collectively support for Electricity Business Act
Valve automation remodeling	Valve automation remodeling
Dredging work	Dredging work collectively support
Transportation equipment	Various conveyor designing and manufacturing for coal conveying and ash handling
Ash handling equipment	Designing and manufacturing for ash handling

Portable valve opening/closing equipment	Remote valve operator, uni-handlers (valve opening/closing equipment for nuclear and water gate valves, etc.)
Pipe support equipment	Pipe support equipment (hydraulic dampers, spring hangers, etc.)
Valve actuators	Electric drive actuators, air-drive actuators, damper actuators
Expansion joints	Expansion joints (metal/non-metallic expansion, etc.), high-pressure joints, pipe joints
Mechanical seals	Mechanical seals for shaft sealing, various packing

Heat exchangers	Shell & tube-type heat exchangers (low-pressure feed water heaters, oil coolers, gland steam condensers), finned tube heat exchangers (air preheaters), plate heat exchangers
Cooling towers	Manufacturing/repair of cooling towers
Various boilers	Various boilers

Flow meters	Flow meters
Level transmitter	Level transmitter for storing silos (microwave, ultrasound, electrostatic capacity)
Motor operated valve diagnostic equipment	Motor operated valve diagnostic equipment
Nondestructive inspection	Various nondestructive inspection services
Other measuring equipment	Dust monitors, conveyor protectors

Belt conveyors	Various belt conveyors (steep-angle flex, vertical bucket conveyors, etc.), conveyor protectors
Chain conveyors	Various chain conveyors (water seal, flight, etc.), conveyor chains (short link, roller chains)
Screw conveyors	Screw conveyors (ash cooling screw conveyors)
Fans	Various fans (fans, air blowers)
Volumetric feeders	Volumetric feeders (table feeders, screw feeders)
Rotary valves	Various rotary valves (special rotary valves for IGCC), slat valves
Pumps	Various pumps (high-lift, vertical, slurry)
Pneumatic conveying systems	Pneumatic conveying systems for collected dust

Silencers	Silencers for safety valves and relief valves
Desulfurization, denitration, deodorization equipment	Blow nozzles for desulfurization, denitration, deodorization equipment,
Strainers	Strainers
Steam traps	Steam traps
Dredging work	Dredging work

Dust collectors	Dust collectors (bag filters, cyclones), filter cloths for bag filters, energy-saving retainers for bag filters
Solid liquid separators	Solid liquid separators (dust eliminators for water intake)
Magnetic separators	Magnetic separators for removing foreign objects in fuel supply systems
Vibrating sieving machines	Vibrating sieving machines

Crushers	Hammer crushers (coal crushers, ash crushers)
Dehydrators	Dehydrators for waste water

Anti-seizing compound	Anti-seizing compound (Smocon)
Canned items, machined items	Canned items, machined items
Chimneys	Chimney design, manufacture and installation, gondola work, lining work
Fireproof construction	Metal hardware for refractory inside furnace, fireproof coating
Cutters for industrial machines	Cutters for industrial machines

ENERGY

Supporting energy sectors such as electric power plantsMore safety. More convenience.

Examples of Our Products

Okano Valve Mfg. Co., Ltd.The only valve manufacturer that supports the whole production process from material to products.

High-pressure steam safety valve

Karatsu Valve Industry Co., Ltd.A trusted brand for various steam line products for thermal/geothermal power plants.

Main steam stop valve

Okasyo Service Co., Ltd.On-site maintenance of steam valves

On-site valve maintenance

Tohkai Shipbuilding & Engineering Co., Ltd.Heat exchanger specialist

Low-Pressure Feed Water Heater

Product Line-up

Stopping

Protecting

Bearing

Connecting

Exchanging

Measuring

Transproting

Mixing

Eliminating

Sorting

Modifying

Other

Main Suppliers

Valve/Valve Maintenance

Valve equipment

Various sealing material

Pumps

Measuring instrumentｓ

Other

Supporting energy sectors such as electric power plants
More safety.
More convenience.