Valve Housing/Body for Air Distribution Systems

Product Specifications

Technical details and manufacturing context for Valve Housing/Body

Definition

The valve housing or body is the primary structural component of a valve in an air distribution system, serving as the pressure-containing envelope that houses the valve's internal mechanisms (such as discs, seats, stems, and actuators). It provides the mounting interface for connecting to piping systems and ensures proper alignment and sealing of internal components to control airflow direction, pressure, and volume. The body is typically manufactured from materials such as cast iron, stainless steel, bronze, aluminum, or ductile iron, selected based on the application's pressure, temperature, and corrosion requirements. Common parameters for air distribution valves include nominal diameters from 15 to 300 mm (per ISO 6708), operating pressures from 1.0 to 1.6 MPa, and operating temperatures from -20°C to 80°C. Body materials are often specified as WCB (carbon steel) or CF8/CF8M (stainless steel) per ASTM A216/A351, while seat materials may include PTFE, RPTFE, or PPL. Leakage rates are typically 0.01% to 0.1% (Class VI or better). Body wall thickness ranges from 3 to 12 mm per ASME B16.34, and end connections can be flanged, threaded, or welded, with sizes DN15 to DN300 per ISO 7005. Weight varies from 2 to 150 kg depending on size and material. Surface treatments such as epoxy or powder coating are used for corrosion protection in outdoor environments. These values are reference ranges and must be verified for the specific model and application with the legal manufacturer or supplier. The valve body remains stationary while internal components move to regulate airflow. It withstands system pressure and provides a sealed environment for the valve's operating mechanism, with ports for inlet and outlet connections that align with the air distribution network.

Working Principle

The valve body remains stationary while internal components move to regulate airflow. It withstands system pressure and provides a sealed environment for the valve's operating mechanism, with ports for inlet and outlet connections that align with the air distribution network. The body's structural integrity ensures that the internal components maintain proper alignment and sealing, allowing precise control of airflow direction, pressure, and volume. The body also serves as the mounting interface for actuators and other accessories, and its material and wall thickness are designed to contain the system pressure safely.

Common Materials

Cast Iron, Stainless Steel, Bronze, Aluminum, Ductile Iron

Technical Parameters

Parameter	Typical range	Notes & selection driver
Nominal Diameter	15–300 mm	Common range for air distribution valvesISO 6708
Operating Pressure	1.0–1.6 MPa	Below 1.0 MPa the seat load is insufficient
Operating Temperature	-20–80 °C	Seal materials degrade above 80°C
Body Material	WCB/CF8/CF8M	WCB for carbon steel, CF8/CF8M for stainlessASTM A216/A351
Seat Material	PTFE/RPTFE/PPL	PTFE for general, RPTFE/PPL for higher temp
Leakage Rate	0.01–0.1 %	Class VI or better for air
Body Wall Thickness	3–12 mm	Minimum per pressure classASME B16.34
End Connection	DN15–DN300	Flanged, threaded, or weldedISO 7005
Weight	2–150 kg	Depends on size and material
Surface Treatment	Epoxy/Powder coating	Corrosion protection for outdoor

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 Port Part
Connection point for incoming airflow from the distribution system

Material: Same as body material
Outlet Port Part
Connection point for outgoing airflow to downstream components

Material: Same as body material
Bonnet Flange Part
Mounting surface for attaching the valve bonnet/cover to access internal components

Material: Same as body material
Seating Surface Part
Precision-machined area where the valve disc/plug makes contact to create a seal

Material: Stainless steel or hardened alloy
Mounting Holes/Bolts Part
Fastening points for connecting to piping flanges or actuator mounting

Material: Carbon steel or stainless steel

Applied To / Applications

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

Air Distribution System

View system integration details

Manufacturers of Valve Housing/Body

Manufacturer profiles associated with Valve Housing/Body.

Sourcing Valve Housing/Body from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Frequently Asked Questions

What materials are commonly used for valve bodies in air distribution systems?

Common materials include cast iron, stainless steel, bronze, aluminum, and ductile iron. The choice depends on the application's pressure, temperature, and corrosion requirements. For example, stainless steel (CF8/CF8M) is often used for higher corrosion resistance, while cast iron is typical for general-purpose use.

What are the typical operating pressure and temperature ranges for these valve bodies?

For air distribution valves, the operating pressure is typically 1.0 to 1.6 MPa, and the operating temperature range is -20°C to 80°C. These are reference ranges; actual limits depend on the specific valve design and materials.

How is the leakage rate of a valve body specified?

Leakage rate is specified as a percentage of the valve's rated flow, typically 0.01% to 0.1% for air service, corresponding to Class VI or better. This indicates the allowable leakage when the valve is closed.

What standards apply to valve body dimensions and connections?

Nominal diameters follow ISO 6708, end connections (flanged, threaded, or welded) follow ISO 7005, and body wall thickness follows ASME B16.34. These standards provide reference dimensions and pressure ratings, but the actual values must be confirmed with the manufacturer for the specific model.

Data Basis

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

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Buyer enquiry

Request manufacturing insight for Valve Housing/Body

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes: Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here: We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman: CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What we don't claim: A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

pressure:	Up to 1500 psi (10.3 MPa)
flow rate:	Dependent on valve type and size, typically 0-5000 GPM
temperature:	-40°C to 200°C
slurry concentration:	Up to 30% solids by weight (material dependent)

Valve Housing/Body

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards