Description
Flange Mounted Pig Detector
The Flange Mounted Pig Detector offers a reliable way to track the movement of pigs, scrapers, or spheres in pipelines.
Operators install this device at key locations to confirm pig passage during cleaning or inspection runs.
It provides visual, electrical, or combined signals to notify operators immediately.
How Pig Detector Works
The device uses an omnidirectional trigger that extends into the pipeline through a welded or flanged fitting.
When a pig passes, it strikes the trigger and activates the signal mechanism.
Because the trigger is omnidirectional, it detects pigs from any direction without needing adjustment.
This design reduces setup time and increases detection accuracy.
As a result, operators can rely on consistent performance in all flow conditions.
Design & Compatibility
This detector fits flanged connections rated up to 2500 lb pressure class.
You can install it on both new and existing pipelines.
It works with standard threaded nipples, eliminating the need for custom fittings.
You can also retrofit older systems using a conversion kit.
The design supports both new installations and upgrades without extra welding or cutting.
This makes it ideal for both onshore and offshore environments.
Signaling Options
You can choose between three signal types to match your operational needs:
A flag indicator provides a clear visual signal.
An electrical switch connects to remote monitoring systems.
A combined flag/electrical setup offers both local and remote confirmation.
These options allow flexibility in pipeline monitoring, especially in remote or hazardous locations.
Materials & Durability
The detector withstands extreme weather and corrosive environments.
All parts exposed to pipeline fluids are fully sealed to prevent leaks.
External components use 316 stainless steel for long-term corrosion resistance.
On electrical models, the switch housing uses powder-coated aluminum.
You may also request stainless steel housings for added protection.
This rugged build ensures reliable operation in harsh conditions.
Material and Pressure Ratings
Welded Access Fitting (Nipple)
Size: 2” NPS XXS
Material: ASTM A333 Grade 6 seamless steel
Yield Strength: 35,000 psi
Tensile Strength: 60,000 psi
Impact Tested: -50°F, 13 ft-lbf average
Flange
Materials: A105 / A694 F52 / A350 LF2 (Triple Certified)
Yield Strength: 360 N/mm²
Tensile Strength: 485 N/mm²
Impact Tested: -46°C, 27 J average
These materials ensure strength, durability, and compliance with international standards.
Electrical Switch Specifications
Type: MICRO SWITCH™ BXC4L (Explosion-proof, weatherproof)
Operating Temp: -40ºF to 185ºF (-40ºC to 85ºC)
Housing: Aluminum and Zinc (Stainless Steel optional)
Seals: Fluorosilicone
Certifications: UL, CSA, ATEX (EExd II T6, Category II 2 GD)
Ratings: 10 amps continuous carry
The switch meets strict safety standards for hazardous atmospheres and offshore use.
Key Advantages of Flange Mounted Pig Detector
Install or remove without shutting down the pipeline.
Confirm pig passage instantly with visual or electronic alerts.
Reduce maintenance time with a no-adjustment trigger.
Use in both new builds and retrofits.
Trust its performance in severe, demanding environments.
The Flange Mounted Pig Detector gives pipeline operators a fast, reliable, and safe way to monitor pigging operations.
You can depend on it to improve safety, reduce downtime, and maintain pipeline integrity.
Let us know if you need a diagram, installation guide, or spec sheet for further support.
