4 Proven Line Stop Actuators That Drive Safety and Performance
Line stop actuators are essential for isolating pressurized pipelines during live maintenance, valve installation, or emergency repairs. By enabling safe flow diversion through bypass systems, they help reduce downtime, maintain operational continuity, and support compliance with pipeline integrity standards.
The Propipe Line Stop ACTUATOR Series: Function, Safety, and Performance
The Propipe Actuator is a hydraulic-powered line stop system designed for safe, controlled isolation of pressurized pipelines. Engineered for live interventions, it enables technicians to insert and retract line stop heads without disrupting flow—making it ideal for temporary shutdowns, bypass setups, and valve replacements.
🛠️ How It Works:
• Mounted on a valve and fitting pre-installed on the pipeline.
• Uses hydraulic force to drive the line stop head into the pipe, sealing the flow path.
• Once isolation is complete, bypass systems maintain flow while work is performed downstream.
• After operations, the head is retracted and the valve is closed to restore full service.
This actuator is essential for field crews and maintenance teams requiring dependable, compliant solutions for pipeline isolation under pressure. Ideal for reducing downtime, enabling safe modifications, and maintaining system integrity
🔧 Key Functions:
• Line Stop Deployment: Inserts a sealing head into live pipelines to isolate flow for maintenance or rerouting.
• Bypass Integration: Supports continuous service by enabling flow diversion through temporary bypass lines.
• High-Pressure Compatibility: Built to perform in demanding environments including oil, gas, steam, and water systems.
✅ Key Benefits:
• Live Isolation Without Shutdown: Perform line stops on active systems without interrupting service.
• Supports Valve Replacement and System Modifications: Enables safe access for upgrades or repairs.
• Minimizes Operational Risk: Reduces exposure during critical interventions.
• Trusted in Industrial Applications: Proven performance in high-pressure pipeline networks.
Explore the Manufacturing Journey of the Propipe Line Stop Actuator
This video offers an inside look at the precision engineering behind the Propipe Line Stop Actuator—built for high-pressure pipeline isolation in demanding field conditions. From raw CNC machining to meticulous assembly, each stage highlights the technical expertise and manufacturing discipline that define Propipe’s commitment to reliability and performance. Witness the transformation from component to fully integrated actuator, ready for deployment in live pipeline operations.
Want to see more videos? Subscribe to our YouTube channel at: https://www.youtube.com/@EnerteqSolutions.
Line Stop Actuator Models and Specifications
ACTUATOR SS MIN
The ACTUATOR SS MN is a manual line stop machine and stop plug setter engineered for safe, efficient isolation of pressurized pipelines. Designed for pipeline sizes ranging from 2″ to 4″, this model offers straightforward manual operation—making it ideal for routine maintenance, emergency interventions, and field repairs. Its lightweight, portable design ensures ease of transport and setup in demanding environments.
🛠️ Key Features:
- Manual Line Stop Capability: Enables technicians to isolate sections of active pipelines without full system shutdown.
- Stop Plug Deployment: Facilitates safe insertion and removal of stop plugs for temporary flow control.
- Compact and Portable: Weighs just 35 kg (72 lb), making it suitable for remote or confined job sites.
- Versatile Application: Compatible with both liquid and gas product groups across various industrial sectors.
📐 Specifications:
- Capacity : 2″ – 4″
- Max Working Pressure: 35 barg (490 psig) at 82.2°C (180°F)
- Max Working Temperature: 121.2°C (250°F) at 55.16 barg (800 psig)
- Control Bar Reach: 48″ (1220 mm)
- Weight: 35 kg (72 lb)
- Product Groups: Liquid or Gas
This actuator is a trusted solution for pipeline crews seeking reliable, compliant tools for live line isolation and flow control. Perfect for minimizing downtime and maintaining operational continuity under pressure.
ACTUATOR I HYD
Propipe ACTUATOR I – Manual Line Stop Actuator for 2″–12″ Pipelines
The Propipe ACTUATOR I is a lightweight, manually operated line stop machine and stop plug setter designed for isolating pressurized pipelines ranging from 2″ to 12″. Built for portability and ease of use, this actuator is ideal for field crews performing live maintenance, emergency repairs, or valve replacements—without requiring system shutdown.
Its compact design and mechanical simplicity make it a reliable solution for both planned and reactive interventions across oil, gas, water, and industrial fluid systems.
🛠️ Core Functions
- Manual Line Stop Operations: Deploys stop plugs into live pipelines to temporarily block flow
- Flow Isolation Without Shutdown: Enables safe maintenance and modifications while maintaining system pressure
- Bypass-Compatible: Supports rerouting of flow during isolation procedures
- Field-Ready Design: Operates without hydraulics—ideal for remote or resource-limited environments
✅ Key Benefits
- Manual operation—no hydraulic power required
- Lightweight and portable for rapid field deployment
- Safe, controlled isolation of pressurized systems
- Versatile compatibility with both liquid and gas pipelines
- Ideal for maintenance and emergency response in confined or remote locations
ACTUATOR II HYD
Propipe ACTUATOR II – Heavy-Duty Hydraulic Line Stop Actuator
The Propipe ACTUATOR II is a robust hydraulic line stop machine engineered for isolating large-diameter pipelines ranging from 14″ to 20″. Designed for high-pressure environments and demanding field conditions, this actuator enables safe, controlled isolation of live pipelines—allowing maintenance, repairs, or system modifications without interrupting flow.
Its extended reach and heavy-duty construction make it ideal for use in oil and gas transmission systems, petrochemical facilities, and industrial fluid networks. Whether deployed during planned maintenance or emergency interventions, the ACTUATOR II delivers reliable performance under pressure.
🛠️ Core Functions
- Line Stop Operations: Inserts a stop plug into active pipelines to temporarily block flow
- Live System Isolation: Enables safe work without depressurizing the entire system
- Bypass Compatibility: Supports rerouting of flow during maintenance or upgrades
- Hydraulic Control: Ensures precision and safety in high-pressure applications
✅ Key Benefits
- Built for large-diameter pipeline isolation
- Operates under extreme pressure and temperature conditions
- Compatible with liquid and gas media
- Ideal for critical infrastructure and high-risk environments
- Supports safe, efficient field operations with minimal downtime
ACTUATOR III HYD
Propipe ACTUATOR III HYD – Hydraulic Line Stop Actuator for 22″–34″ Pipelines
The Propipe ACTUATOR III HYD is a heavy-duty, hydraulically powered line stop actuator engineered for isolating pressurized pipelines ranging from 22″ to 34″. Equipped with a high-capacity hydraulic system, this actuator is built to handle substantial mechanical loads and pressures during live pipeline interventions.
Its extended stroke and rugged construction make it ideal for critical maintenance, emergency repairs, and flow control operations across oil, gas, water, and industrial fluid systems—without requiring full system shutdown.
🛠️ Core Functions
- Hydraulic Line Stop Operations: Deploys stop plugs into live pipelines to temporarily block flow
• Live System Isolation: Enables safe maintenance and modifications while maintaining system pressure
• High-Load Actuation: Handles up to 349.5 kN (78,570 lbf) for demanding field conditions
• Extended Stroke Capability: 140″ stroke for deep plug setting in large-diameter pipelines
✅ Key Benefits
• Hydraulic operation for high-force plug deployment
• Extended stroke for deep-set line stop applications
• Built for large-diameter, high-pressure pipeline isolation
• Supports safe, efficient maintenance without depressurization
ACTUATOR IV HYD
Propipe ACTUATOR IV HYD – Advanced Hydraulic Line Stop Actuator for 36″–48″ Pipelines
The Propipe ACTUATOR IV HYD is the most advanced hydraulic line stop actuator in the ACT series, purpose-built for isolating the largest pressurized pipelines ranging from 36″ to 48″. Engineered for exceptional power and precision, this model is ideal for critical industrial applications where safe, controlled intervention is required without system shutdown.
Its high-force hydraulic system and rugged construction make it a trusted solution for complex operations across oil, gas, petrochemical, and industrial fluid networks.
🛠️ Core Functions
- Hydraulic Line Stop Operations: Deploys stop plugs into live pipelines to temporarily block flow
• Live System Isolation: Enables safe maintenance and modifications while maintaining system pressure
• High-Force Actuation: Delivers exceptional mechanical power for large-diameter, high-pressure systems
• Advanced Performance: Designed for demanding industrial environments and precision plug deployment
✅ Key Benefits
- Most powerful actuator in the Propipe ACT series
• Hydraulic operation for high-force, precision plug setting
• Built for large-diameter pipeline isolation under pressure
• Supports safe, efficient maintenance without depressurization
• Ideal for critical infrastructure and emergency response scenarios
Precision Modifications to Meet Your Pipeline Maintenance Requirement
We Customize to Fit Your Field Conditions for custom specifications, stroke modifications, or special-order configurations, we’re here to help. Whether you require non-standard mounting, extended boring capacity, or tailored hydraulic integration, our engineering team can adapt PTM systems to meet your exact operational needs. Contact us directly to discuss your project requirements, and we’ll work with you to deliver a solution that aligns with your technical standards and field conditions.