Purge Manifold

Product Specifications

Technical details and manufacturing context for Purge Manifold

Definition

The purge manifold is a critical component of industrial purge systems, serving as the central distribution hub that receives purge gas from a single source and divides it into multiple controlled streams. It ensures precise delivery of inert or process gases to various equipment sections, chambers, or pipelines to displace oxygen, moisture, or contaminants, thereby maintaining controlled atmospheres, preventing oxidation, or ensuring safety in hazardous environments. Constructed from materials such as stainless steel (e.g., 304, 316), carbon steel, aluminum, or brass, the manifold is designed to withstand temperatures from -20 to 80°C with NBR seals (FKM available for high-temperature applications). It features 4 to 12 outlets with port sizes ranging from 1/4 to 1 inch (BSP or NPT threads per ISO 7-1), and flow capacities from 50 to 200 L/min at 0.6 MPa inlet pressure. The body material is typically SS304 (SS316 optional) per ASTM A276, with internal surface finish Ra ≤ 0.8 μm per ISO 4287. Leakage rate is ≤ 0.1 mL/min at 1.1 MPa air test. Weight ranges from 2.5 to 8.0 kg depending on the number of outlets. These specifications serve as reference ranges; actual values must be confirmed with the manufacturer for the specific model and application. The manifold is not a standalone product but a component integrated into a larger purge system, and its selection depends on system requirements such as gas type, pressure, flow, and number of zones. Proper installation, operation, and maintenance are essential to ensure reliable performance and safety. Always verify model-specific values and standards with the legal manufacturer or supplier before procurement or use.

Working Principle

The purge manifold operates by receiving pressurized purge gas (such as nitrogen, argon, or dry air) through a main inlet. Internal valves, ports, and flow dividers within the manifold body then regulate and distribute this gas to multiple outlet connections. Flow control is typically achieved through integrated needle valves, ball valves, or metering orifices for each outlet line, allowing independent adjustment of purge gas flow rates to different system points based on specific requirements. The manifold ensures even distribution and precise control, which is critical for maintaining inert atmospheres or preventing contamination in industrial processes.

Common Materials

Stainless Steel (e.g., 304, 316), Carbon Steel, Aluminum, Brass

Technical Parameters

Parameter	Typical range	Notes & selection driver
Number of Outlets	4–12 ports	Custom configurations available
Port Size	1/4–1 inch	BSP or NPT threadsISO 7-1
Flow Capacity	50–200 L/min	At 0.6 MPa inlet pressure
Operating Temperature	-20–80 °C	For NBR seals
Body Material	SS304	SS316 optionalASTM A276
Seal Material	NBR	FKM for high temp
Weight	2.5–8.0 kg	Depends on number of outlets
Surface Finish	Ra ≤ 0.8 μm	Internal surfacesISO 4287

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

Manifold Body
Main structural block that houses internal passages and provides mounting for valves and fittings.

Material: Stainless Steel
Isolation/Control Valves
Valves (e.g., ball, needle) installed at each outlet to start/stop and regulate purge gas flow.

Material: Stainless Steel or Brass
Pressure Gauge Port Part
Connection point for mounting a pressure gauge to monitor inlet or system pressure.

Material: Stainless Steel
Inlet Connection Part
Primary fitting or flange for connecting the main purge gas supply line to the manifold.

Material: Stainless Steel
Metering Orifices Optional
Fixed restrictions that set each outlet flow where no valve is fitted.

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Purge Manifold.

Applied To / Applications

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

Purge System

View system integration details

Manufacturers of Purge Manifold

Manufacturer profiles associated with Purge Manifold.

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Frequently Asked Questions

How many outlets can this manifold have?

The manifold is available with 4 to 12 outlets, but custom configurations may be possible. The number of outlets affects the manifold's weight and flow distribution. Verify the exact number needed with the supplier.

What materials are available for the manifold body?

Common body materials include stainless steel (SS304, with SS316 optional), carbon steel, aluminum, and brass. The choice depends on the process gas, pressure, and environmental conditions. Confirm material compatibility with the manufacturer.

What is the leakage rate specification?

The leakage rate is ≤ 0.1 mL/min at a 1.1 MPa air test. This ensures minimal gas loss. However, actual leakage performance may vary with installation and maintenance. Always verify with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 10 bar (150 psi)
flow rate:	0.5 to 50 SCFM
temperature:	-40°C to 150°C

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards