The Sypris Sig-Tech Intrusive Pig Signaler is a proven, durable, and easy-to-install solution for detecting pig passage during pipeline maintenance and operations. It delivers real-time confirmation, supports emissionless pigging, and reduces downtime across onshore and offshore projects.
The Sig-Tech signalers are used to detect the real-time passage of pigs within a pipeline, supporting operators with real-time confirmation and helping verify run success. Designed for ease of installation and long-term durability, the Sig-Tech units are suitable for both onshore and offshore applications, and can be installed under live conditions with the correct tools.
How the Sig-Tech Intrusive Pig Signaler works
Installed at predetermined intervals along the pipeline, the Sig-Tech intrusive pig signaler detects the movement of cast polyurethane pigs or spherical type pigs. A trigger mechanism extends into the pipeline through a welded boss fitting. When a pig passes, it activates the trigger, which sets off a signaling mechanism, confirming the pig’s position and supporting real-time operational decision-making.
This signal provides confirmation of the pig’s passage, helping operators verify pig locations, monitor run success, and identify any potential obstructions or failures in real-time.
Designed for flexibility and ease of use
The Sig-Tech is easy to install, with each boss fitting designed to the correct intrusion depth based on wall thickness requirements. A flanged mounting option is also available if required. The signaller can be installed and removed under operating pressure, acting in a similar way to a pressure and equalisation fitting completion plug.
Once installed, the signaler requires no further calibration or adjustment – offering a plug-and-play solution.
The 3705 PSI (Class 1500#) design is compatible with other leading brands, which makes it a flexible option for both newly constructed pipelines and system upgrades. In addition, using the appropriate tools and procedures, the signaller can be installed on live pipelines, avoiding the need for costly shutdowns.
The Sig-Tech’s stainless steel NACE MR0175 compliant construction is weather and corrosion-resistant, ensuring durability and performance in extreme environments, including offshore and remote installations.
Multiple indication options
Sypris offers a range of signaling mechanisms to suit different operational needs:
- Mechanical Flag Indicator for visual confirmation in the field
- Electrical Indicator for remote monitoring via integration with SCADA or control systems
- Combination Flag/Electrical Indicator for redundant and versatile signaling
Sypris’ electrical versions include a 316SS electrical switch as standard, in addition to providing excellent corrosion resistance and a long service life.
No calibration required
One of the key benefits of the Sig-Tech is its maintenance-free design. Once installed, no further adjustments or calibrations are needed. The welded boss fitting is set to the correct intrusion depth based on pipeline wall thickness and is designed to ensure accurate alignment with the pig path.
A reliable addition to your pigging toolkit
By providing accurate, real-time pig passage confirmation, the Sig-Tech Intrusive Pig Signaler helps operators:
- Maintain pipeline efficiency
- Reduce downtime and shutdown costs
- Improve safety and compliance
- Operate effectively in demanding conditions
When paired with Girard polyurethane pigs and ZEVAC emissionless pigging equipment, the Sig-Tech offers a complete, environmentally responsible pigging solution.
Tremco Pipeline Equipment Director Brett Trembath said: “Our range supports emissionless pigging. The Girard poly pigs and the Sig-Tech pig signaller can be used in conjunction with our ZEVAC equipment so no venting is required during pigging operations.”
For more information on the Sypris Sig-Tech Intrusive Pig Signaler, or other pigging products supplied by Tremco Pipeline Equipment, contact Brett Trembath (07) 3344 1066 or email sales@tremcopipeline.com.au
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