List of products by brand Miyawaki

Miyawaki – Technical profile of a steam trap, pressure reducing valve and condensate handling equipment manufacturer

MIYAWAKI Inc. is a Japanese manufacturer of steam engineering equipment, including steam traps, pressure reducing valves, air vents, air traps, pumping traps, separators, strainers, check valves, vacuum breakers and steam trap management systems.

The company’s technical focus is the stable operation of steam and condensate networks. Its equipment is used to remove condensate, control steam pressure, recover heat and protect steam consumers from water hammer and wet steam.

Main product categories include:

  • inverted bucket steam traps,
  • ball float steam traps,
  • thermostatic steam traps,
  • thermodynamic disc steam traps,
  • temperature control steam traps,
  • direct acting pressure reducing valves,
  • pilot operated pressure reducing valves,
  • pumping traps,
  • air vents and air traps,
  • separators, strainers and vacuum breakers.

Steam trap selection must be based on application duty, not only connection size. The engineer must define condensate load, start-up load, differential pressure, back pressure, operating pressure, steam locking risk and air venting requirements.

Pressure reducing valves are used to reduce and stabilise downstream steam pressure before process users, heat exchangers, coils or utility stations. Selection requires inlet pressure, outlet pressure, steam flow, minimum and maximum load, steam quality, noise, downstream safety valve and bypass arrangement.

Pumping traps are used when condensate cannot return by gravity or available differential pressure. They are particularly relevant in heat exchangers operating under stall conditions, vacuum systems or high back pressure condensate return lines.

Miyawaki equipment is suitable for boilerhouses, heat exchangers, steam tracing, sterilisation, food processing, textile, chemical and HVAC steam systems. Correct integration of steam traps, pressure reducing valves, separators and condensate recovery equipment is essential for stable steam system operation.

Pressure reducing valve - Direct Acting for liquids & gases - REAC20 | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - Direct Acting for liquids & gases - REAC20 | Miyawaki

Pressure reducing valve - Direct Acting for liquids & gases - REAC20 | Miyawaki
Miyawaki
Miyawaki REAC20 Direct-Acting Pressure Reducing Valve for Liquids and Gases The Miyawaki REAC20 is a self-operated pressure reducing valve suitable for both compressible and incompressible media. It is applicable for air, technical gases, water, oil, and other neutral fluids. The downstream pressure is internally sensed within the control chamber,...
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Pressure reducing valve - Direct Acting for liquids & gases - REAH20 | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - Direct Acting for liquids & gases - REAH20 | Miyawaki

Pressure reducing valve - Direct Acting for liquids & gases - REAH20 | Miyawaki
Miyawaki
Miyawaki REAH20 Direct-Acting Pressure Reducer for Liquids and Gases The Miyawaki REAH20 is a self-acting pressure reducer designed for both compressible and incompressible media, including air, technical gases, water, oil, and neutral process fluids. The downstream pressure is internally sensed within the control chamber, directly adjusting the valve...
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Pressure reducing valve - Direct Acting for liquids & gases - REAH20-M | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - Direct Acting for liquids & gases - REAH20-M | Miyawaki

Pressure reducing valve - Direct Acting for liquids & gases - REAH20-M | Miyawaki
Miyawaki
Miyawaki REAH20-M Direct-Acting Pressure Reducing Valve for Liquids and Gases The Miyawaki REAH20-M is a self-operated pressure reducing valve suitable for both compressible and incompressible media, including air, technical gases, water, and oil. The downstream pressure is internally sensed within the control chamber, directly adjusting the valve opening...
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Pressure reducing valve - Direct Acting for steam - RE1 | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - Direct Acting for steam - RE1 | Miyawaki

Pressure reducing valve - Direct Acting for steam - RE1 | Miyawaki
Miyawaki
Miyawaki RE1 Direct-Acting Pressure Reducing Valve for Steam The Miyawaki RE1 is a self-operated pressure reducing valve designed for small to medium steam flow applications. The downstream pressure is sensed in the control chamber, directly adjusting the valve opening without the need for electric or pneumatic actuators. Adjustment is performed via the...
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Pressure reducing valve - Direct Acting for steam - RE2 | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - Direct Acting for steam - RE2 | Miyawaki

Pressure reducing valve - Direct Acting for steam - RE2 | Miyawaki
Miyawaki
Miyawaki RE2 Direct-Acting Pressure Reducing Valve for Steam The Miyawaki RE2 is a compact, self-operated pressure reducing valve designed for low steam consumption applications. The downstream pressure is detected in the control chamber, directly adjusting the valve opening without the need for electric or pneumatic actuators. Adjustment is performed via...
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Pressure reducing valve - Direct Acting for steam - RE20 | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - Direct Acting for steam - RE20 | Miyawaki

Pressure reducing valve - Direct Acting for steam - RE20 | Miyawaki
Miyawaki
Miyawaki RE20 Direct-Acting Pressure Reducing Valve for Steam The Miyawaki RE20 is a self-operated pressure reducing valve for steam, requiring no external impulse line or auxiliary energy. The downstream pressure is detected in the valve's control chamber, and the cone position adjusts directly to maintain the outlet pressure near the set point. The...
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Pressure reducing valve - Direct Acting for steam - REA20 | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - Direct Acting for steam - REA20 | Miyawaki

Pressure reducing valve - Direct Acting for steam - REA20 | Miyawaki
Miyawaki
Miyawaki REA20 Direct-Acting Pressure Reducing Valve The Miyawaki REA20 is a self-acting pressure reducing valve suitable for liquids and gases, although it is listed under the steam category. The manufacturer's technical description indicates its use in compressible media such as air and technical gases, as well as incompressible media like water, oil,...
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Pressure reducing valve - Direct Acting for steam - REC1 | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - Direct Acting for steam - REC1 | Miyawaki

Pressure reducing valve - Direct Acting for steam - REC1 | Miyawaki
Miyawaki
Miyawaki REC1 Direct-Acting Steam Pressure Reducer The Miyawaki REC1 is a self-operated pressure reducer designed for small steam lines. Downstream pressure is detected in the internal control chamber, directly adjusting the valve opening without the need for electric or pneumatic actuators. Adjustment is made via the top handle. Technical Specifications...
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Pressure reducing valve - Direct Acting for steam - REC20 | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - Direct Acting for steam - REC20 | Miyawaki

Pressure reducing valve - Direct Acting for steam - REC20 | Miyawaki
Miyawaki
Miyawaki REC20 Direct-Acting Steam Pressure Reducing Valve The Miyawaki REC20 is a self-operated steam pressure reducing valve, requiring no external energy or impulse line. Downstream pressure is detected in the internal control chamber, directly adjusting the valve opening. The design features a piston actuator with an O-ring, eliminating the need for a...
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Pressure reducing valve - Direct Acting for steam - REH20 | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - Direct Acting for steam - REH20 | Miyawaki

Pressure reducing valve - Direct Acting for steam - REH20 | Miyawaki
Miyawaki
Miyawaki REH20 Direct-Acting Steam Pressure Reducing Valve The Miyawaki REH20 is a self-actuated steam pressure reducing valve, operating without external energy or impulse lines. The downstream pressure is detected in the internal control chamber, and the valve directly adjusts the opening to maintain the set point. It features a piston-operated design...
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Pressure reducing valve - Direct Acting for steam - REH20-M | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - Direct Acting for steam - REH20-M | Miyawaki

Pressure reducing valve - Direct Acting for steam - REH20-M | Miyawaki
Miyawaki
Miyawaki REH20-M Direct-Acting Pressure Reducing Valve for Steam The Miyawaki REH20-M is a self-actuated pressure reducing valve designed for high-pressure and high-temperature steam applications. The downstream pressure is detected within the internal control chamber, directly adjusting the valve opening. No external energy, pneumatic actuator, or...
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Pressure reducing Valve - Pilot Operated for steam - RE10N | Miyawaki | Philippopoulos s.a.

Pressure reducing Valve - Pilot Operated for steam - RE10N | Miyawaki

Pressure reducing Valve - Pilot Operated for steam - RE10N | Miyawaki
Miyawaki
Miyawaki RE10N Pilot-Operated Steam Pressure Reducing Valve The Miyawaki RE10N is a pilot-operated pressure reducing valve designed for steam applications, featuring a compact flanged construction. The pilot chamber pressure actuates the movement section, adjusting the main valve opening to maintain downstream pressure at the set point. Manual adjustment...
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Pressure reducing Valve - Pilot Operated for steam - RE3 | Miyawaki | Philippopoulos s.a.

Pressure reducing Valve - Pilot Operated for steam - RE3 | Miyawaki

Pressure reducing Valve - Pilot Operated for steam - RE3 | Miyawaki
Miyawaki
Miyawaki RE3 Pilot-Operated Steam Pressure Reducing Valve The Miyawaki RE3 is a pilot-operated pressure reducing valve designed for small to medium steam flow applications. The pilot chamber supplies the actuator section, which adjusts the main valve opening to maintain the downstream pressure at the set point. Manual adjustment is facilitated by a handle...
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Pressure reducing valve - With Pulse line for liquids & gases - REA20L | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - With Pulse line for liquids & gases - REA20L | Miyawaki

Pressure reducing valve - With Pulse line for liquids & gases - REA20L | Miyawaki
Miyawaki
Miyawaki REA20L Pressure Reducing Valve with Pulse Line for Liquids and Gases The Miyawaki REA20L is a direct-acting pressure reducing valve designed for compressible media such as air and industrial gases, as well as incompressible media like water, oil, and neutral liquids. The downstream pressure is detected in a control chamber, directly adjusting the...
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Pressure reducing valve - With Pulse line for liquids & gases - REAC20L | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - With Pulse line for liquids & gases - REAC20L | Miyawaki

Pressure reducing valve - With Pulse line for liquids & gases - REAC20L | Miyawaki
Miyawaki
Miyawaki REAC20L Pressure Reducing Valve with Pulse Line for Liquids and Gases The Miyawaki REAC20L is a direct-acting pressure reducing valve with external pressure sensing on the secondary side. Downstream pressure is detected in a control chamber, and the valve opening is mechanically adjusted without an electric or pneumatic actuator. It is designed...
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Pressure reducing valve - With Pulse line for liquids & gases - REAH20L | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - With Pulse line for liquids & gases - REAH20L | Miyawaki

Pressure reducing valve - With Pulse line for liquids & gases - REAH20L | Miyawaki
Miyawaki
Miyawaki REAH20L Pressure Reducing Valve with Pulse Line for Liquids and Gases The Miyawaki REAH20L is a direct-acting pressure reducing valve designed for both compressible and incompressible media. Secondary side pressure is transmitted via a pulse line to the sensing chamber, allowing the valve to mechanically adjust its opening to maintain downstream...
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Pressure reducing valve - With Pulse line for liquids & gases - REAH20L-M | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - With Pulse line for liquids & gases - REAH20L-M | Miyawaki

Pressure reducing valve - With Pulse line for liquids & gases - REAH20L-M | Miyawaki
Miyawaki
Miyawaki REAH20L-M Pressure Reducing Valve with Impulse Line for Liquids and Gases The Miyawaki REAH20L-M is a direct-acting pressure reducing valve designed for compressed media such as air and inert gases, as well as incompressible media like water, oil, and similar process fluids. The downstream pressure is obtained via an impulse line and transmitted...
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Pressure reducing valve - With Pulse line for steam - RE20L | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - With Pulse line for steam - RE20L | Miyawaki

Pressure reducing valve - With Pulse line for steam - RE20L | Miyawaki
Miyawaki
Miyawaki RE20L Steam Pressure Reducing Valve with Pulse Line The Miyawaki RE20L is a direct-acting steam pressure reducing valve featuring an external pulse line on the low-pressure side. The downstream pressure is detected in a measurement chamber, and the main valve position is mechanically adjusted to maintain the outlet pressure at the selected set...
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Pressure reducing valve - With Pulse line for steam - REC20L | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - With Pulse line for steam - REC20L | Miyawaki

Pressure reducing valve - With Pulse line for steam - REC20L | Miyawaki
Miyawaki
Miyawaki REC20L Steam Pressure Reducing Valve with Pulse Line The Miyawaki REC20L is a direct-acting steam pressure reducing valve featuring an external downstream pressure sensing line. The secondary side pressure is directed to the sensing chamber, and the valve position is mechanically adjusted to maintain the set point without the need for an electric...
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Pressure reducing valve - With Pulse line for steam - REH20L | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - With Pulse line for steam - REH20L | Miyawaki

Pressure reducing valve - With Pulse line for steam - REH20L | Miyawaki
Miyawaki
Miyawaki REH20L Steam Pressure Reducing Valve with Impulse Line The Miyawaki REH20L is a direct-acting steam pressure reducing valve featuring an external sensing line on the downstream side. The downstream pressure is directed to the sensing chamber, directly adjusting the valve opening to maintain the outlet pressure according to the mechanical set...
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Pressure reducing valve - With Pulse line for steam - REH20L-M | Miyawaki | Philippopoulos s.a.

Pressure reducing valve - With Pulse line for steam - REH20L-M | Miyawaki

Pressure reducing valve - With Pulse line for steam - REH20L-M | Miyawaki
Miyawaki
Miyawaki REH20L-M Steam Pressure Reducing Valve with Pulse Line The Miyawaki REH20L-M is a direct-acting pressure reducing valve designed for high-pressure and high-temperature steam applications. The downstream pressure is detected via a pulse line, directly adjusting the valve opening to maintain pressure close to the mechanical set point of the spring....
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Inverted bucket steam trap - ER105 | Miyawaki | Philippopoulos s.a.

Inverted bucket steam trap - ER105 | Miyawaki

Inverted bucket steam trap - ER105 | Miyawaki
Miyawaki
Miyawaki ER105 – Inverted Bucket Steam Trap The Miyawaki ER105 is an inverted bucket steam trap made from cast iron FC250, designed for condensate drainage in low-pressure steam systems. It is intended for applications requiring mechanical operation without electrical or pneumatic actuators and offers on-line repairability. Technical Specifications...
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Inverted bucket steam trap - ER110 | Miyawaki | Philippopoulos s.a.

Inverted bucket steam trap - ER110 | Miyawaki

Inverted bucket steam trap - ER110 | Miyawaki
Miyawaki
Miyawaki ER110 – Inverted Bucket Steam Trap The Miyawaki ER110 is an inverted bucket steam trap made from cast iron FC250, designed for medium to large condensate loads in low to medium pressure steam systems. It operates on a mechanical steam-condensate separation principle using a U-shaped duct and bucket, without requiring electric or pneumatic...
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Inverted bucket steam trap - ER116 | Miyawaki | Philippopoulos s.a.

Inverted bucket steam trap - ER116 | Miyawaki

Inverted bucket steam trap - ER116 | Miyawaki
Miyawaki
Miyawaki ER116 – Inverted Bucket Steam Trap The Miyawaki ER116 is a mechanical inverted bucket steam trap made from ductile cast iron FCD450, designed for medium to large condensate loads in steam networks. It employs a dual steam separation mechanism with a U-shaped duct and inverted bucket, allowing mechanical discharge without an external actuator....
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