QPM11 Air Pressure Switch G1/8 G1/4 0.1–1MPa NO NC Adjustable

$23.13 $31.10

Color QPM11-NO-01 QPM11-NO-02 QPM11-NC-01 QPM11-NC-02 QPM11-NO-02 Inner QPM11-NC-02 Inner

QPM11 Adjustable Air Pressure Switch – NO & NC Models

Take precise control of your air compressor or hydraulic system with the QPM11 Air Pressure Switch. Available in Normally Open (NO) and Normally Closed (NC) configurations, this heavy-duty diaphragm switch delivers reliable automatic pressure regulation for repair shops, workshops, and industrial applications. Made in Mainland China.

Key Specifications

Models: QPM11-NO / QPM11-NC
Material: Brass-plated nickel body with insulated plastic casing
Connection Thread: G1/8" or G1/4" external thread
Pressure Range: 0.1–1 MPa (approx. 15–140 PSI), adjustable via included hex wrench
Available Pressure Ratings: 1.6 MPa | 3 MPa | 5 MPa | 10 MPa
Working Medium: Air / Pneumatic systems
Operating Temperature: -5°C to 60°C
Working Voltage: 220V AC | 48V AC | DC
Maximum Power: 24 VA / 100 VA
Insulation Voltage: 500 V / 1500 V
Maximum Current: 500 mA
Max Pulse Count: 200 T/min
Service Life: 100 million cycles
Quantity: 1 piece

Why Choose the QPM11 Pressure Switch?

Easy Adjustment: Quickly dial in your target pressure from 15 to 140 PSI using the included hexagonal wrench — no special tools needed.
NO & NC Configurations: Choose Normally Open (NO) for circuits that activate at a set pressure, or Normally Closed (NC) for circuits that remain closed until the set pressure is reached, offering flexible integration into any pneumatic control system.
Durable Metal Construction: Brass-plated nickel body ensures excellent conductivity and long-term durability; insulated plastic housing provides safe, reliable operation.
Simple Installation: External thread connection (G1/8 or G1/4) makes installation fast and straightforward — compatible with most standard compressor fittings.
Wide Application: Ideal for air compressors, hydraulic systems, repair shops, and DIY electrical projects requiring automatic pressure control.

Package Contents

1 × QPM11 Air Pressure Switch (NO or NC, as selected)

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Frequently Asked Questions

Q: What is the difference between the QPM11-NO and QPM11-NC air pressure switch models?

A: The QPM11-NO (Normally Open) switch has contacts that are open at rest and close when the set pressure is reached. The QPM11-NC (Normally Closed) switch has contacts that remain closed at rest and open once the set pressure threshold is met. Your choice depends on how your compressor or hydraulic control circuit is wired.

Q: What thread size does the QPM11 pressure switch use for installation?

A: The QPM11 pressure switch is available with G1/8" or G1/4" external thread connections, making it compatible with a wide range of standard air compressor and pneumatic system fittings.

Q: Can I adjust the pressure setting on the QPM11 switch after installation?

A: Yes. The QPM11 air pressure switch includes a hexagonal wrench that allows you to easily adjust the pressure setting between approximately 15 PSI and 140 PSI (0.1–1 MPa) at any time, even after the switch is installed.

Q: What voltages is the QPM11 air pressure switch compatible with?

A: The QPM11 supports 220V AC, 48V AC, and DC operating voltages, with maximum power ratings of 24 VA or 100 VA and insulation voltage ratings of 500 V or 1500 V, making it suitable for a broad range of electrical control applications.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.