Manifold Block/Header

Product Specifications

Technical details and manufacturing context for Manifold Block/Header

Definition

The manifold block/header is a critical component of delivery manifold and valve systems, serving as the central distribution point where a single input flow is divided into multiple output channels. It provides mounting surfaces for valves, sensors, and fittings while maintaining structural integrity under pressure. In industrial applications, it ensures controlled distribution of liquids or gases to various process points with minimal pressure drop and leakage.

This component is typically manufactured from stainless steel, aluminum, or carbon steel, with material grades ranging from 304 to 316L (per ASTM A276) for corrosion resistance. The block features precision-machined internal passages that maintain flow characteristics, and sealing surfaces prevent leaks between connections. Valves mounted on the block regulate flow to individual outlets.

Key parameters include operating pressure of 1.0–1.6 MPa, nominal diameter of 15–100 mm (ISO 6708), and 2–12 outlets. Port threads follow BSPP standard (ISO 228-1) with sizes G1/4–G2, and NPT is available on request. Surface roughness is Ra 0.8–1.6 μm (ISO 1302), and leakage rate is ≤0.01 mL/min at rated pressure with air. Operating temperature ranges from -40 to 85°C, weight from 0.5 to 15 kg, and flow coefficient (Cv) from 2.5 to 40 (ISA-75.01). Tolerance on port spacing is ±0.05 mm (ISO 2768-m), and pressure rating is PN16–PN40 (ISO 7268).

These values are reference ranges and must be verified for the specific model and application with the legal manufacturer or supplier. The manifold block is used in hydraulic, pneumatic, and process systems where centralized distribution is required. It is essential to confirm compatibility with the working fluid, pressure, temperature, and environmental conditions. Regular inspection for wear, corrosion, and seal integrity is recommended to ensure reliable operation.

Working Principle

Fluid or gas enters through a single inlet port and is distributed through internal passages to multiple outlet ports. The block's internal channels are precision-machined to maintain flow characteristics, while sealing surfaces prevent leaks between connections. Valves mounted on the block regulate flow to individual outlets. The design minimizes pressure drop and ensures even distribution. Proper selection of materials, port sizes, and sealing methods is critical for performance. Verification of pressure ratings, leakage rates, and material compatibility with the process media is necessary before installation.

Common Materials

Stainless Steel, Aluminum, Carbon Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Operating Pressure	1.0–1.6 MPa
Nominal Diameter	15–100 mm	Common sizes for manifold blocksISO 6708
Number of Outlets	2–12	Custom configurations available
Port Thread	G1/4–G2	BSPP standard; NPT available on requestISO 228-1
Material Grade	304–316L	316L for corrosive mediaASTM A276
Surface Roughness	Ra 0.8–1.6 μm	Internal surfaces polished for low frictionISO 1302
Leakage Rate	≤0.01 mL/min	At rated pressure with air
Operating Temperature	-40–85 °C	Seals limit upper range
Weight	0.5–15 kg	Depends on size and material
Flow Coefficient	2.5–40 Cv	For water at 1 psi dropISA-75.01
Tolerance on Port Spacing	±0.05 mm	Ensures alignment with mating partsISO 2768-m
Pressure Rating	PN16–PN40	Higher ratings on requestISO 7268

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

Sealing Surfaces Part
Provide flat, machined areas for gaskets or O-rings to prevent leaks

Material: Same as block material
Internal Passages Part
Precision-drilled channels that distribute fluid between ports

Material: Same as block material

Applied To / Applications

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

Delivery Manifold & Valves

View system integration details

Manufacturers of Manifold Block/Header

Manufacturer profiles associated with Manifold Block/Header.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 6 September 2026

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Frequently Asked Questions

What materials are available for manifold blocks?

Common materials include stainless steel, aluminum, and carbon steel. Material grades range from 304 to 316L (ASTM A276), with 316L recommended for corrosive media. Confirm the specific grade with the supplier based on your application.

What is the operating pressure range?

The reference operating pressure range is 1.0–1.6 MPa. Always verify the exact rating for your model and application with the manufacturer.

Can the number of outlets be customized?

Yes, the number of outlets typically ranges from 2 to 12, with custom configurations available. Specify your required outlet count and port sizes when ordering.

What standards apply to port threads?

Port threads follow BSPP standard (ISO 228-1) with sizes G1/4–G2. NPT threads are available on request. Verify thread type and size with the supplier to ensure compatibility with your fittings.

Data Basis

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

Preliminary Technical Classification

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pressure:	Up to 6000 psi
flow rate:	Up to 500 GPM
temperature:	-40°C to 200°C
slurry concentration:	Up to 40% solids by weight

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards