Steam Distribution Header

Product Specifications

Technical details and manufacturing context for Steam Distribution Header

Definition

In an Industrial Steam Generation System for Process Heating, the Steam Distribution Header serves as the critical junction point where steam from one or multiple boilers is aggregated and then systematically routed to various downstream equipment such as heat exchangers, reactors, dryers, and other process heating units. It ensures balanced steam flow, pressure regulation, and efficient thermal energy distribution throughout the manufacturing facility. The header is typically a cylindrical vessel with one or more inlet connections and multiple outlet branches, each equipped with control valves to regulate steam flow to individual process zones. It is designed to handle high-pressure steam, equalizing pressure and temperature across the system to maintain consistent steam quality. The header is available in nominal diameters from DN50 to DN300, with design pressures ranging from 1.0 to 1.6 MPa and corresponding design temperatures of 184–204°C. Shell thickness varies from 6 to 12 mm, depending on pressure and corrosion allowances. The number of outlets can range from 2 to 12, with outlet spacing between 80 and 300 mm to accommodate valves and piping. Materials commonly specified include Carbon Steel ASTM A106 and Stainless Steel 304/316, with material grades such as 20# to 12Cr1MoVG per GB 5310. Surface treatment typically involves blast cleaning to Sa2.5–Sa3 per ISO 8501-1. Leakage rates are limited to 0–0.1% at rated pressure. Weight varies from 50 to 500 kg depending on size, pressure class, and number of outlets. All parameters are reference ranges and must be verified with the manufacturer for specific applications. Standards listed are for procurement and verification purposes only and do not imply certification or compliance of any specific product.

Working Principle

High-pressure steam enters the header through inlet connections, where it mixes and equalizes in pressure and temperature. The header then supplies steam through multiple outlet branches equipped with control valves to different process zones, maintaining consistent steam quality and flow rates to meet varying thermal demands. The header acts as a buffer, absorbing fluctuations in boiler output and process demand, ensuring stable operation. Proper sizing of the header and its outlets is critical to minimize pressure drop and ensure even distribution. Regular inspection of valves and connections is necessary to detect leaks or blockages that could affect performance.

Common Materials

Carbon Steel ASTM A106, Stainless Steel 304/316

Technical Parameters

Parameter	Typical range	Notes & selection driver
Nominal Diameter	DN50–DN300 mm	Select based on total steam flow and pressure drop.ISO 6708
Design Temperature	184–204 °C	Corresponds to saturated steam at design pressure.
Shell Thickness	6–12 mm	Minimum thickness per pressure and corrosion allowance.ASME B36.10
Number of Outlets	2–12 pcs	Number of process connections required.
Outlet Spacing	80–300 mm	Ensures adequate space for valves and piping.
Material Grade	20#–12Cr1MoVG	Carbon steel for general service; alloy for high temp.GB 5310
Surface Treatment	Sa2.5–Sa3	Blast cleaning before painting or insulation.ISO 8501-1
Leakage Rate	0–0.1 %	Max allowable leakage at rated pressure.ISO 5208
Weight	50–500 kg	Depends on size, pressure class, and outlets.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Inlet Nozzle Part
Receives steam from boiler or steam source

Material: Carbon Steel
Outlet Branches
Distributes steam to different process lines

Material: Carbon Steel
Pressure Relief Valve
Safety device to prevent overpressure

Material: Stainless Steel
Drain Connection Part
Removes condensate from the header

Material: Carbon Steel
Support Brackets Part
Structural support for the header assembly

Material: Carbon Steel
Header Body
The manifold pipe itself; its diameter is what buffers the pressure swings.
Branch Control Valves
Set how much steam each process branch draws.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Deaeration Section / Scrubbing Section

View system integration details

Manufacturers of Steam Distribution Header

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Jiangsu Prettech Machinery & Technology Co., Ltd.

Jiangsu, CN

Also makes: Distribution Header, Heat Exchanger, Mixing Tank

Listed on the company's own website · profile compiled by CNFX from public sources

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Frequently Asked Questions

What is the primary function of a steam distribution header?

It collects steam from one or more boilers and distributes it to multiple process heating points, ensuring balanced flow and pressure.

What materials are commonly used for steam headers?

Carbon steel ASTM A106 and stainless steel 304/316 are typical, with grades like 20# to 12Cr1MoVG per GB 5310.

How do I select the correct header size?

Consider total steam flow, pressure drop, number of outlets, and spacing. Nominal diameters range from DN50 to DN300, with design pressures 1.0–1.6 MPa.

What maintenance is required?

Regular inspection of valves and connections for leaks, checking pressure and temperature, and ensuring surface treatment integrity.

Data Basis

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Preliminary Technical Classification

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pressure:	Up to 150 bar (2175 psi) for standard designs, custom designs available for higher pressures
flow rate:	Typically 5,000 to 100,000 kg/h (11,000 to 220,000 lb/h) per header, depending on diameter and configuration
temperature:	Up to 400°C (752°F) for standard carbon steel, higher with alloy materials
slurry concentration:	Not applicable - designed for clean steam distribution only

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

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Compliance & Manufacturing Standards