Pig Passage Indicators

Pig passage indicators represent a fundamental component in modern pipeline management systems, providing the reliable monitoring capability necessary for efficient and safe pipeline operations. Their robust construction and flexible configuration options make them suitable for a wide range of pipeline applications across multiple industries.

Description

Pig passage indicators serve as essential monitoring devices in pipeline systems, providing accurate confirmation of pig movement during cleaning, inspection, and maintenance operations. These robust indicators deliver real-time information about pig location, enabling operators to maintain operational control and ensure the efficiency of pipeline management programs.

1. Technical Specifications

Material Construction

Stainless Steel 304: General corrosion resistance for standard applications
Stainless Steel 316: Enhanced corrosion resistance for marine and chemical environments
DSS F51: High strength with excellent corrosion resistance
Carbon Steel A105N: Robust performance in high-pressure systems
Inconel 625: Superior resistance to extreme temperatures and corrosive media

Pressure Ratings

Comprehensive pressure class options from 150# to 2500#, ensuring compatibility with various pipeline pressure requirements across different industries and applications.

Temperature Range

Operational capability from -20°C to +120°C, maintaining reliable performance across diverse environmental conditions and seasonal variations.

2. Key Features of Pig Passage Indicators

Operational Reliability

Direct intrusive detection method provides positive pig passage confirmation
Robust construction ensures long-term performance in demanding environments
Multiple material options accommodate various pipeline media and conditions
Wide pressure and temperature ratings suit diverse operational requirements

Installation Flexibility

2″ flange connection for standard pipeline integration
2″ welded nipple for permanent installation solutions
2″ welded base with NPT nipple connection for versatile mounting options
Adaptable to both new installations and existing pipeline systems

Detection Versatility

Bi-directional triggers for pipelines with reversible flow
Bi-directional feather triggers for enhanced sensitivity
Uni-directional triggers for single-direction pipeline systems
Multiple indicator types to match operational preferences

Indicator Options

Manual reset flag for basic visual confirmation
Manual reset flag with electrical switch output for system integration
Digital display with electrical switch output for advanced monitoring

3. Selection Guidance

Trigger Type Selection

Bi-directional: Suitable for pipelines with flow reversal capability
Bi-directional feather: Recommended for detecting low-profile or lightweight pigs
Uni-directional: Appropriate for systems with consistent flow direction

Indicator Type Considerations

Manual flags: Basic applications where visual monitoring is sufficient
Electrical switch output: Systems requiring remote monitoring or alarm integration
Digital displays: Applications needing detailed operational data and remote access

Indicator Types

Indicator Types

Indicator Types	A	B	C	D
Intrusive Type	Intrusive	Intrusive	Intrusive	Intrusive
Indicator Features	Popper Type	Manual reset flag	Manual reset flag combined with electrical signals	Date and time display combined with electrical signals