A typical twin ferrule fitting assembly consists of four primary components:
- Fitting body
- Nut
- Front ferrule
- Back ferrule
Correct installation, tubing quality, material compatibility, and fitting design all contribute to long-term system integrity and leak-tight performance within instrumentation systems.
At Fluidline, we supply Uni-Lok stainless steel twin ferrule compression tube fittings as a proven instrumentation fitting system used across South Africa and sub-Saharan Africa, supported by long-term field confidence, plant familiarity, and substantial local stockholding.
Uni Lok twin ferrule tube fittings — engineered for repeatable, leak tight performance
Uni Lok tube fittings are designed to deliver leak tight seals and reliable tube grip, with features that support consistent remakes, vibration fatigue resistance, and high-quality surface finishes.
Key fitting characteristics include:
- Strong tube-gripping action
- Controlled ferrule geometry
- Vibration resistance
- Repeatable remake capability
- High-quality surface finishes
- Full product traceability
- Original material certification support
Materials & Standard Availability
- Stainless Steel 316/316L
- Brass
- 316Ti / 1.4571
- Monel®
Metric sizes from 3 mm to 50 mm | Imperial sizes from 1/8″ to 1″
Fluidline maintains substantial local stockholding
Reducing lead times for new EPC projects, plant upgrades and urgent maintenance requirements, while weekly airfreight shipments further support stock continuity shutdowns and project responsiveness across Africa.
Why Plant Acceptance Matters in Africa
In EPC, mining, process, and maintenance environments, technical suitability alone is not always enough. Products already recognised and accepted on site can reduce uncertainty during:
- Technical reviews
- Procurement approval
- Installation
- Commissioning
- Maintenance support
Uni-Lok fittings have an established installed base across South Africa and Africa, supporting familiarity within industrial instrumentation environments and reducing operational friction during project execution.
Engineered Instrumentation Connection Systems
Reliable fitting performance is the result of a complete instrumentation system rather than a single component alone.
Key engineering considerations include:
- Correct tubing specification
- Installation discipline
- Material compatibility
- Surface finish quality
- Tube preparation
- Pressure rating suitability
- Traceability and certification
- Long-term vibration resistance
When correctly specified and installed, twin ferrule tube fittings provide repeatable, vibration-resistant instrumentation connections with strong tube-gripping capability and reduced leak risk.
Traceability & Certification
Fluidline supports Uni-Lok fittings with full product traceability and material certification options aligned with industrial QA and EPC requirements.
EN10204 3.1 certification as standard | EN10204 3.2 certification available on request.
Material traceability | Heat and lot identification | Original material certification:
- ISO 9001 certified manufacturing
- ISO 14001 certified manufacturing
- ISO 45001 certified manufacturing
- CE0035 approved manufacturing
- NACE compliance (optional)
- ATEX 0425
Traceability supports:
Plant QA systems | Audit requirements | Lifecycle maintenance | Material verification | Documentation requirement
Complete Instrumentation System Supply
Fluidline supplies complete instrumentation system capability including:
Uni-Lok tube and pipe fittings | Stainless steel seamless instrumentation tubing.
Instrumentation valves and manifolds | Pressure regulators | Air header manifolds | Tube saddles and clamps.
This integrated supply capability reduces:
- Multi-vendor compatibility risk
- Documentation fragmentation
- Procurement delays
- Installation inconsistency
- Commissioning challenges
For EPC contractors, OEMs, and industrial end users, this creates a more controlled and consistent instrumentation supply chain.
Applications
Uni-Lok stainless steel twin ferrule compression tube fittings are widely used in:
- Instrumentation systems
- Process control systems
- Pneumatic systems
- Hydraulic systems
- Mining process plants
- Chemical plants
- Power generation facilities
- Refineries
- Industrial automation systems