Pilot Valve for Pneumatic Systems | Industrial Component Directory

Product Specifications

Technical details and manufacturing context for Pilot Valve (if applicable)

Definition

In an Air Distribution System, a pilot valve is a critical control component that uses a small amount of compressed air to actuate a larger main valve, enabling precise regulation of airflow, pressure, or direction with minimal input force. It serves as the interface between control signals and the main pneumatic actuators. The pilot valve is typically a compact, low-power device that receives a low-pressure control signal—electrical, pneumatic, or manual—and converts it into a pneumatic output that shifts the main valve's position. This two-stage operation allows for high flow control with low energy input, making pilot valves essential in automated machinery, process control, and other industrial applications where reliable and efficient pneumatic actuation is required. The pilot valve's body is commonly made from brass, stainless steel, or engineering plastics such as POM or nylon, depending on the application's environmental and media compatibility requirements. Key parameters to consider when selecting a pilot valve include operating pressure (typically 1.0–1.6 MPa), flow capacity (Cv 0.5–2.0), port size (G1/8–G1/2), operating temperature range (-20 to 80°C), response time (10–50 ms), leakage rate (≤0.1 cm³/min per ISO 5208 Class A), voltage (24 V DC ±10%), power consumption (2–5 W), IP rating (IP54–IP65), body material (316L stainless steel), and weight (0.3–1.2 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 60034, IEC 60529, and ASTM A276 are listed as procurement references, not as proof of certification. Always confirm model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The pilot valve operates by receiving a low-pressure control signal (electrical, pneumatic, or manual). This signal shifts the pilot valve's internal spool or poppet, which then directs a small flow of compressed air to the control port of a larger main valve. The main valve, in turn, opens or closes to regulate the primary airflow in the system. This two-stage operation allows for high flow control with low energy input.

Common Materials

Brass, Stainless Steel, Engineering Plastics (e.g., POM, Nylon)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Operating Pressure	1.0–1.6 MPa	Below 1.0 MPa the seat load is insufficient
Flow Capacity (Cv)	0.5–2.0 Cv	Determines pilot valve sizing for main valve response
Port Size	G1/8–G1/2 inch	Common thread sizes for pneumatic connectionsISO 228-1
Operating Temperature Range	-20–80 °C	Seal materials limit upper temperature
Response Time	10–50 ms	Faster response for high-cycle applications
Leakage Rate	≤0.1 cm³/min	Class A seat leakage Class A seat leakage per ISO 5208ISO 5208
Voltage	24 ±10% V DC	Other voltages available on requestIEC 60034
Power Consumption	2–5 W	Low power for energy-efficient systems
IP Rating	IP54–IP65	IP65 for dusty or wet environmentsIEC 60529
Body Material	316L	Corrosion-resistant for harsh mediaASTM A276
Weight	0.3–1.2 kg	Affects mounting and piping support

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

Solenoid Coil
Converts electrical signals into magnetic force to actuate the valve spool.

Material: Copper wire, epoxy resin
Valve Spool/Poppet Part
The moving part that opens, closes, or directs airflow ports.

Material: Stainless steel, hardened steel
Valve Body
Houses internal components and provides connection ports.

Material: Brass, aluminum, engineering plastic
Spring Part
Returns the spool to its default position when the actuating force is removed.

Material: 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 Pilot Valve (if applicable)

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Frequently Asked Questions

What is the operating pressure range for this pilot valve?

The reference operating pressure range is 1.0–1.6 MPa. Always verify the exact range for your specific model.

What are the available port sizes?

Common port sizes are G1/8 to G1/2, per ISO 228-1. These are standard thread sizes for pneumatic connections. Confirm the required port size for your system.

What is the leakage rate?

The leakage rate is ≤0.1 cm³/min, corresponding to Class A seat leakage per ISO 5208. This is a reference value; actual leakage may vary by model and condition.

What IP rating does the valve have?

The IP rating ranges from IP54 to IP65, per IEC 60529. IP65 is suitable for dusty or wet environments. Verify the specific rating for your application.

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 psi (operating), 200 psi (max)
flow rate:	0.5 to 5 SCFM
other spec:	Not suitable for slurry applications
temperature:	-20°C to 80°C

Pilot Valve (if applicable)

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards