Air Supply Regulator for Spraying Systems

Product Specifications

Technical details and manufacturing context for Air Supply Regulator

Definition

Within a Spraying Station, the Air Supply Regulator is a critical component that ensures the pneumatic system receives stable, controlled air pressure and flow. It regulates the compressed air from the main supply to match the specific requirements of spray guns, nozzles, or other pneumatic tools, directly impacting the consistency, quality, and efficiency of the coating or spraying application. The regulator is designed for use in machinery and equipment manufacturing, particularly in automated or manual spraying processes where precise air pressure is essential for uniform coating thickness and finish quality. It operates by reducing the primary (inlet) pressure to a desired secondary (outlet) pressure, compensating for fluctuations in the upstream supply. The device typically features a diaphragm or piston mechanism, an adjustable spring-loaded control knob, and a pressure gauge port for monitoring. Construction materials include brass, stainless steel, and engineering plastics, with a zinc alloy body (Zamak 5) and oil-resistant nitrile rubber (NBR) seals. Key parameters to verify for your specific application include maximum inlet pressure (2.5 MPa), flow capacity (50–200 L/min at 0.6 MPa supply, per ISO 6358), pressure regulation accuracy (±0.02 MPa under stable flow), port size (1/4–1/2 inch BSPT, per ISO 7-1), operating temperature (-20 to 60°C), weight (0.5–1.2 kg), and gauge port (1/8 inch, per ISO 7-1). Always confirm model-specific values and standards with the legal manufacturer or supplier before installation.

Working Principle

The regulator uses a diaphragm or piston mechanism. Incoming high-pressure air acts on one side of the diaphragm. A spring (adjustable via a control knob) applies force on the other side. The balance of these forces positions a valve to restrict or open the airflow passage, thereby reducing and maintaining the downstream (secondary) pressure at the desired setpoint, regardless of fluctuations in the upstream (primary) supply pressure.

Common Materials

Brass, Stainless Steel, Engineering Plastics

Technical Parameters

Parameter	Typical range	Notes & selection driver
Maximum Inlet Pressure	2.5 MPa	Exceeding may damage the regulator
Flow Capacity	50–200 L/min	At 0.6 MPa supply pressureISO 6358
Pressure Regulation Accuracy	±0.02 MPa	Under stable flow conditions
Port Size	1/4–1/2 inch	BSPT threadsISO 7-1
Operating Temperature	-20–60 °C	Below -20°C seals may harden
Body Material	Zamak 5	Zinc alloy for corrosion resistanceEN 1774
Seal Material	NBR	Oil-resistant nitrile rubberASTM D2000
Weight	0.5–1.2 kg	Depends on port size
Gauge Port	1/8 inch	For pressure gauge connectionISO 7-1

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

Adjustment Knob/Spring Part
Allows the operator to set the desired downstream pressure by compressing the reference spring.

Material: Plastic or Metal
Diaphragm/Piston Part
The sensing element that moves in response to the balance between outlet pressure and spring force, actuating the control valve.

Material: Rubber, Polyurethane, or Metal
Poppet/Control Valve
Opens or closes the orifice to restrict airflow and achieve the desired pressure reduction.

Material: Stainless Steel, Brass
Pressure Gauge
Visually displays the regulated outlet pressure (often integrated).

Material: Glass, Plastic, Metal
Body Part
Houses internal components and provides connection ports.

Material: Brass, Aluminum, Stainless Steel

Applied To / Applications

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

Spraying Station

View system integration details

Manufacturers of Air Supply Regulator

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Frequently Asked Questions

What is the maximum inlet pressure?

The maximum inlet pressure is 2.5 MPa. Exceeding this value may damage the regulator, so always verify your supply pressure does not exceed this limit.

What is the flow capacity?

The flow capacity is 50–200 L/min at 0.6 MPa supply pressure, as per ISO 6358. This range depends on the port size and operating conditions.

What materials are used in construction?

The body is made of zinc alloy (Zamak 5) per EN 1774, and seals are oil-resistant nitrile rubber (NBR) per ASTM D2000. Other materials include brass, stainless steel, and engineering plastics.

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 inlet, regulated 10-100 psi outlet
flow rate:	Up to 25 SCFM
temperature:	-20°C to 80°C
slurry concentration:	Not suitable for slurries; for clean, dry air only

Air Supply Regulator

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards