Output Chamber for Pneumatic Relays and Amplifiers

Product Specifications

Technical details and manufacturing context for Output Chamber

Definition

The output chamber is a sealed compartment within a pneumatic relay or amplifier. It receives pressurized air from the amplifier's internal mechanism, such as a diaphragm or piston, and contains it at a controlled pressure. This pressure is then transmitted to downstream components like actuators, valves, or control systems. The chamber serves as the final interface between the amplification mechanism and the controlled process, ensuring that the amplified signal is delivered accurately and reliably.

In operation, the output chamber's volume and pressure are regulated by the input signal. The amplifier mechanism adjusts the chamber pressure to be proportional to the input, creating an amplified output. The chamber maintains this pressure until the input changes, at which point it rapidly adjusts to the new level. This allows for precise control of the downstream process.

The output chamber is typically constructed from materials such as aluminum alloy, stainless steel, or engineering plastic, depending on the application requirements. Key parameters include operating pressure (1.0–1.6 MPa), port size (G1/4–G1/2), flow capacity (Cv 0.8–2.5), leakage rate (≤0.1 mL/min), response time (10–30 ms), temperature range (-20–80 °C), ingress protection (IP54–IP65), material grade (316L), and weight (0.5–1.2 kg). These values are reference ranges and must be verified for the specific model and application.

Standards such as ISO 5208, ISO 228-1, IEC 60534-2-3, IEC 60534-4, IEC 60529, and ASTM A276 are referenced for testing and verification. However, listing a standard does not imply certification or compliance; it serves as a procurement reference. Always confirm model-specific values and standards with the legal manufacturer or supplier before selection or installation.

Working Principle

The output chamber receives pressurized air from the amplifier's internal mechanism, such as a diaphragm or piston. Its volume and pressure are controlled by the input signal, creating an amplified output pressure that is precisely proportional to the input. The chamber maintains this pressure until the input signal changes, at which point it rapidly adjusts to the new level.

Common Materials

Aluminum alloy, Stainless steel, Engineering plastic

Technical Parameters

Parameter	Typical range	Notes & selection driver
Port Size	G1/4–G1/2 inch	Thread type per ISO 228-1ISO 228-1
Flow Capacity (Cv)	0.8–2.5 Cv	Higher Cv for larger portsIEC 60534-2-3
Leakage Rate	≤0.1 mL/min	At rated pressureISO 5208
Response Time	10–30 ms	From signal to 90% outputIEC 60534-4
Temperature Range	-20–80 °C	Non-condensingIEC 60534-4
Ingress Protection	IP54–IP65	IP65 for washdownIEC 60529
Material	316L	Corrosion-resistantASTM A276
Weight	0.5–1.2 kg	Depends on port size

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

Chamber Body Part
Forms the main sealed enclosure for pressurized air

Material: Aluminum alloy or stainless steel
Output Port Part
Connection point for tubing to downstream components

Material: Brass or stainless steel
Pressure Relief Valve
Safety feature to prevent over-pressurization

Material: Stainless steel
Sealing Gasket Part
Ensures airtight seal between chamber components

Material: Nitrile rubber or silicone

Applied To / Applications

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

Pneumatic Relay / Amplifier

View system integration details

Manufacturers of Output Chamber

Manufacturer profiles associated with Output Chamber.

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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 is the function of an output chamber in a pneumatic relay?

The output chamber is a sealed compartment that receives pressurized air from the amplifier mechanism and delivers it to downstream components. It maintains the amplified pressure until the input signal changes, ensuring accurate control.

What materials are commonly used for output chambers?

Common materials include aluminum alloy, stainless steel, and engineering plastic. The choice depends on the application, such as corrosion resistance or weight requirements.

What are typical operating pressure ranges for output chambers?

Typical operating pressure ranges are 1.0–1.6 MPa, but this is a reference range. Always verify the specific model's rated pressure with the manufacturer.

How do I verify the performance of an output chamber?

Check parameters like leakage rate, response time, and flow capacity against the manufacturer's datasheet. Standards such as ISO 5208 and IEC 60534-4 provide test methods, but compliance must be confirmed by the supplier.

Data Basis

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

Preliminary Technical Classification

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pressure:	0 to 150 psig (10.3 bar)
flow rate:	Up to 50 SCFM (1.4 m³/min)
temperature:	-20°C to 120°C
slurry concentration:	Not applicable - designed for clean, dry air only

Output Chamber

Product Specifications

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Application Fit & Sizing Matrix

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