Poppet/Control Valve

Product Specifications

Technical details and manufacturing context for Poppet/Control Valve

Definition

The poppet/control valve is a component used in pneumatic systems, particularly within air supply regulators, to modulate the flow of compressed air. It operates on the principle of pressure differential: when upstream pressure exceeds the combined force of downstream pressure and spring force, the poppet disc lifts from its seat, creating an orifice for air passage. The degree of opening is determined by pressure signals, mechanical adjustment, or electronic actuation, allowing precise control of downstream pressure or flow rate. In regulator applications, the valve typically works with a diaphragm or piston that senses downstream pressure and adjusts the poppet position to maintain a set point. This component is available in configurations with nominal diameters ranging from 15 to 100 mm, operating pressures from 1.0 to 1.6 MPa, and flow coefficients (Cv) from 1.5 to 120. Leakage rates are specified as 0.01% to 0.05% of rated Cv, corresponding to Class IV–VI seat leakage. Operating temperature range is -40°C to 85°C, and actuation voltage for solenoid pilot operation is 24 V DC ±10%. Response time for full stroke is 0.1 to 0.5 seconds. Materials commonly used include stainless steel, brass, and engineering plastics for the body and trim, with seat materials such as PTFE, PEEK, or 316 stainless steel. Body material grades may include WCB, CF8, or CF8M per ASTM standards. Ingress protection ratings for actuator enclosures range from IP54 to IP65. Weight varies from 5 to 120 kg depending on size and material. These values are reference ranges and must be verified for the specific model and application with the legal manufacturer or supplier. The valve is a critical flow control element in many pneumatic regulator designs, ensuring stable and accurate pressure regulation.

Working Principle

The poppet/control valve operates on pressure differential. When upstream pressure exceeds downstream pressure plus spring force, the poppet lifts from its seat, creating an orifice for airflow. The degree of opening is controlled by pressure signals, mechanical adjustment, or electronic actuation. In regulators, it typically works with a diaphragm or piston that senses downstream pressure and modulates the poppet position to maintain set pressure.

Common Materials

Stainless Steel, Brass, Engineering Plastics

Technical Parameters

Parameter	Typical range	Notes & selection driver
Nominal Diameter	15–100 mm	Common range for industrial control valvesISO 5208
Operating Pressure	1.0–1.6 MPa	Below 1.0 MPa the seat load is insufficientISO 5208
Flow Coefficient (Cv)	1.5–120 Cv	Determines flow capacity at full openIEC 60534-2-1
Leakage Rate	0.01–0.05 % of rated Cv	Class IV–VI seat leakageIEC 60534-4
Operating Temperature	-40–85 °C	Seal material limits rangeISO 5208
Actuation Voltage	24 ±10% V DC	For solenoid pilot operationIEC 60534-5
Response Time	0.1–0.5 s	Full stroke open/closeIEC 60534-5
Body Material	WCB, CF8, CF8M ASTM	Carbon steel or stainless steelASTM A216/A351
Seat Material	PTFE, PEEK, 316SS ASTM	PTFE for tight shut-off, PEEK for high tempASTM D4020/A276
Ingress Protection	IP54–IP65 IP	For actuator enclosureIEC 60529
Weight	5–120 kg	Depends on size and material

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

Poppet Disc Part
Sealing element that lifts from seat to allow flow

Material: Stainless Steel
Valve Seat Part
Mating surface that provides seal when valve is closed

Material: Brass or Stainless Steel
Stem/Actuator
Connects poppet to control mechanism for positioning

Material: Stainless Steel
Spring Part
Provides return force to close valve or maintain position

Material: Spring Steel

Applied To / Applications

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

Air Supply Regulator

View system integration details

Manufacturers of Poppet/Control Valve

Manufacturer profiles associated with Poppet/Control Valve.

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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 typical operating pressure range for this poppet/control valve?

The reference operating pressure range is 1.0 to 1.6 MPa. Always confirm the exact range for your specific model with the manufacturer.

What materials are commonly used for the valve body and seat?

Body materials may include stainless steel, brass, or engineering plastics, with grades such as WCB, CF8, or CF8M per ASTM standards. Seat materials can be PTFE, PEEK, or 316 stainless steel. Material selection depends on the application and must be verified with the supplier.

How does the valve achieve pressure regulation?

The valve uses a poppet mechanism that lifts from its seat when upstream pressure exceeds downstream pressure plus spring force. A diaphragm or piston senses downstream pressure and modulates the poppet position to maintain the set pressure, providing precise control.

What are the leakage rate specifications?

The leakage rate is specified as 0.01% to 0.05% of rated Cv, corresponding to Class IV–VI seat leakage per IEC 60534-4. Actual leakage performance depends on the seat material and installation, so 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 1000 psi (69 bar)
flow rate:	0.1 to 500 SCFM
temperature:	-40°C to 200°C
slurry concentration:	Not recommended for slurries >5% solids by weight

Product Specifications

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