HOKUTO MFG In-line Heater – High-Efficiency Direct Steam Mixing Heater

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Introduction

The HOKUTO MFG In-line Heater is an ultra-compact, high-efficiency fluid heating solution designed for modern industrial processes that require precise temperature control, reduced energy consumption, and reliable hot-water production. By directly injecting steam into liquid inside the pipeline, this In-line Heater overcomes the limitations of traditional heat exchangers and provides exceptional thermal efficiency for a wide range of industries.

HOKUTO MFG's In-line Heater utilizes direct water-steam mixing for instant, stable, and energy-efficient fluid heating, perfect for demanding industrial processes.

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What Is the HOKUTO MFG In-line Heater?

The In-line Heater is a direct steam-mixing fluid heater that injects steam straight into the process liquid flowing through the pipe. Its unique internal structure ensures immediate mixing between water and steam, enabling stable, efficient, and continuous heating without the need for external tanks or large equipment.

Key Capabilities

• Direct mixing of water and steam to instantly generate hot water

• Usable with fluids other than water

• No electricity required—hot water production relies solely on water and steam supply
  

Core Advantages of the HOKUTO MFG In-line Heater

1. Energy Saving – 100% Heat Exchange Efficiency

By directly mixing liquid and steam, the In-line Heater utilizes the full heat content of steam, reducing wasted energy and maximizing efficiency.

2. Accurate Temperature Control

Instant and stable temperature management is achieved through direct mixing.✔ Supports fluctuations in water or steam pressure✔ Prevents overheating and temperature-related problems common in tank heating

3. Space Saving & Lower Equipment Costs

The compact design eliminates the need for:

• Large heating tanks

• Condensers

• Broad heat-transfer surfaces

• Complicated drain piping from conventional heat exchangers

4. Faster Start-Up & Higher Productivity

Hot water can be immediately supplied downstream, shortening warm-up time and improving operational efficiency.

5. Reduced Hammering, Vibration & Noise

The uniquely engineered nozzle disperses steam uniformly, significantly reducing:

• Condensation shock vibration

• Water hammering

• Mechanical noise

6. Long Service Life & Minimal Maintenance

With no moving parts, the heater provides continuous, long-term reliability.(Regular cleaning is recommended for contaminated fluids.)

Applications Across Multiple Industries

The In-line Heater is suitable for any industry requiring hot-water generation or fluid heating, including:

• Power plants

• Chemical processing

• Stone & quarry operations

• Food & beverage

• Fiber & textile

• Pulp & paper

• Medical and pharmaceutical
  

Typical Operating Modes

• One-Pass Heating: Heats the fluid instantly as it passes

• Recycle Heating: Circulates liquid to maintain temperature setpoints

• Heating & Hot-Water Supply: Keeps supply temperature constant during continuous operation
  

Standard Flow Rates

Model	Flow Range (m³/h)	Water Side Connection	Steam Side Connection	L (mm)	A (mm)	B (mm)	Approx. Weight (kg)
4TDR-AM	1.2 – 2.4	25A	25A	160	80	95	7
6TDR-AM	2.5 – 5	32A	32A	180	90	110	10
8TDR-AM	4.5 – 9	40A	40A	190	95	115	11
10TDR-AM	7 – 14	50A	50A	220	110	120	14
12TDR-AM	10 – 20	65A	65A	270	135	130	22
16TDR-AM	16 – 32	80A	80A	300	150	150	25
20TDR-AM	25 – 50	100A	100A	450	180	160	45
24TDR-AM	35 – 70	125A	100A	510	200	170	60
32TDR-AM	60 – 120	150A	※	※	※	※	※
40TDR-AM	105 – 210	200A	※	※	※	※	※
48TDR-AM	165 – 330	250A	※	※	※	※	※

※ Specifications may vary depending on configuration.

Construction Overview

The heater consists of three main components:Body, Nozzle, and Element.

As liquid passes through the center of the nozzle, steam is injected into the fluid and dispersed using specialized internal elements. This design ensures uniform mixing, eliminates water hammering, and enables precise heating control.

Material Options

Standard materials include:

• FC200, SUS304, SUS316, STPG370

• Corrosion-resistant metals such as Carpenter alloys, Hastelloy, nickel alloys, titanium

• Synthetic resin linings (PFA, PTFE)

Nichiboku Worldwide Supply Support

Nichiboku Ltd. provides global supply support for Japanese industrial products, ensuring reliable distribution and after-sales assistance worldwide.

➡️ Get global supply support ➡️ Inquire about international shipping and product availability ➡️ Partner with Nichiboku for worldwide industrial solutions

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