Industrial Air Pressure Actuated Switch Qf501b for Signal Interlocking and Machine Control
Product Specifications
Select Now
QF-501B
QF-501B
Product Details
| After-sales Service: | Yes |
|---|---|
| Warranty: | Yes |
| Manufacturing Process: | CNC Milling |
Shipping
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
|---|
Payment Guarantee
| Payment Methods: |
|
|---|---|
| Support payments in USD |
| Secure payments: | Every payment you make on Made-in-China.com is protected by the platform. |
|---|
| Refund policy: | Claim a refund if your order doesn't ship, is missing, or arrives with product issues. |
|---|
Secured Trading Service
Diamond Member Since 2025
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
Importers and Exporters
Low MOQ
Customization from Designs
Management Certification
The supplier has import and export rights
The MOQ for the supplier's products is 1
The supplier provides design based customization services
The supplier has quality management system certification, including:
ISO9001:2015 certificate
ISO45001:2018 certificate
ISO14001
ISO9001:2015 certificate
ISO45001:2018 certificate
ISO14001
Sign In to see all verified strength labels (6)
Find Similar Products
Basic Info.
- Model NO.
- QF-501B
- Surface Treatment
- Spray-Paint
- Operation Pressure
- 0.15-0.8 MPa
- Material
- Alloy
- Color
- Customizable
- Set Point Adjustment Range
- 0.2 to 0.7 MPa
- Electrical Contact Configuration
- Spdt
- Rated Electrical Load
- 5A
- Pressure Connection Port Size
- 1/8 Inch BSPT
- Proof Pressure
- 1.0 MPa
- Transport Package
- Wooden Box, Paper Box
- Specification
- 15*10*15
- Trademark
- Shandong Ronye/OEM
- Origin
- China
- HS Code
- 8431431000
- Production Capacity
- on-Demand Production
Packaging & Delivery
- Package Size
- 10.00cm * 10.00cm * 10.00cm
- Package Gross Weight
- 2.000kg
- Lead Time
-
10 days (1 - 5 Pieces)
To be negotiated ( > 5 Pieces)
Product Description
Product Description
Pneumatic Pressure Switch QF501B
The Pneumatic Pressure Switch, model QF501B, is a critical electro-pneumatic interface device that performs the essential function of converting a fluid power signal (air pressure) into an electrical control signal, thereby acting as a sensory node and a trigger within automated systems. Its primary role is to monitor the pressure in a pneumatic circuit and open or close an electrical circuit based on a pre-set pressure threshold, enabling or disabling electrical components like solenoids, contactors, motor starters, and pilot lights. The operational principle of the QF501B is typically based on a direct-acting diaphragm mechanism; when the incoming air pressure, applied to a robust NBR diaphragm, exerts sufficient force to overcome the counterforce of a pre-calibrated adjustable spring, the diaphragm physically moves, actuating a snap-action switch inside the device. This snap-action mechanism ensures a quick, positive, and clean make-or-break of the electrical contacts, preventing arcing and contact chatter that could lead to premature failure or unreliable signaling. The switch is often configured as SPDT (Single-Pole, Double-Throw), providing a set of Normally Open (NO) and Normally Closed (NC) contacts, which offers tremendous wiring flexibility for designing control logic—for instance, it can be used to turn on a warning light when pressure is too low (using the NC contact) or to activate a process when adequate pressure is achieved (using the NO contact). Constructed with a brass body, the QF501B is durable and resistant to corrosion in standard industrial environments, while its compact size and standard 1/8 inch BSPT pressure port allow for easy installation directly into air lines or manifolds. Operating within a standard pressure range of 0.1 to 0.8 MPa, it is perfectly suited for monitoring main system pressure, pilot pressure, or the backpressure from actuators. With a substantial electrical rating of 5A at 250VAC, it can often directly control significant electrical loads without the need for an intermediate relay, simplifying control cabinet design.
We can supply spares for CANRIG Top Drive
We can supply spares for Varco Top Drive
TDS-8SA,TDS-9SA,TDS-10SA,TDS-11SA TDS-4A,TDS-4S,TDS-4H TDS-1000,TDS-3H
We can supply spares for Tesco Top Drive
TESCO Top Drives (Hydraulic)
250 HXI 700
250 HMI 475
500/650 HCIS 750
500/650 HCIS 1205
TESCO Top Drives (Electric)
350/400EXI600
150/250EMI400
500/650 ECI 900
We can supply spares for MH Top Drive
MH PTD-500-AC-1250
MH DDM™ SERIES TOP DRIVES
){kind=link}
Send your message to this supplier
People who viewed this also viewed
Product Groups
More
Find Similar Products By Category
- Supplier Homepage
- Products
- Top drive spares
- Industrial Air Pressure Actuated Switch Qf501b for Signal Interlocking and Machine Control
Related Categories
Hot Searches
More