
Straight Tube Union Connector
Engineered from virgin PFA and high-grade fluoropolymers, the straight tube union connector delivers reliable, leak-free inline joining for ultra-pure water and corrosive chemical fluid systems operating under demanding industrial conditions.
Product Overview
Engineered from virgin PFA and high-grade fluoropolymers, the straight tube union connector delivers reliable, leak-free inline joining for ultra-pure water and corrosive chemical fluid systems operating under demanding industrial conditions.
Key Features
Zero Contamination: Smooth wetted interior surfaces prevent particulate entrapment and bacterial growth.
Leak-Free Sealing: Precision-machined geometry ensures uniform radial compression across the tube circumference.
Thermal Endurance: Maintains structural integrity across continuous operating ranges from -60°C to +200°C.
Low Dead Volume: Minimized internal cavity prevents fluid retention and cross-contamination during batch switching.
Design & Connection Architecture
Union Straight: Direct inline coupling for connecting two parallel tubing runs of identical outer diameters.
Reducer Union: Stepped inner diameters engineered to transition fluid paths between different tubing sizes securely.
Nut-and-Gripper: Mechanical lock design that distributes gripping force evenly without deforming the tubing wall.
Reusable Assembly: Allows safe disconnection and re-tightening during routine system maintenance or reconfiguration.
Technical Specifications
|
Parameter |
Imperial Specification |
Metric Specification |
|
Tubing Size (OD) |
1/4", 3/8", 1/2", 3/4", 1" |
6 mm, 8 mm, 10 mm, 12 mm, 19 mm, 25 mm |
|
Primary Material |
Virgin PFA, PTFE, PVDF |
Virgin PFA, PTFE, PVDF |
|
Max. Pressure |
Up to 1.0 MPa (145 psi) at 20°C |
Up to 1.0 MPa (145 psi) at 20°C |
|
Temperature Range |
-60°C to +200°C |
-60°C to +200°C |
Installation Guidelines
Tubing Preparation: Square-cut the tube end cleanly using a dedicated plastic cutter to ensure a flat, burr-free surface.
Component Sequencing: Slide the union nut and gripping components onto the tubing in the correct sequence prior to insertion.
Insertion Depth: Push the tubing firmly into the fitting body until it bottoms out against the internal tube stop.
Tightening Procedure: Hand-tighten the union nut, then apply specified wrench rotation turns (1 to 1-1/4 turns past finger-tight) to engage the seal.
Typical Applications
Semiconductor Wet Benches: Chemical delivery lines for hydrofluoric acid, sulfuric acid, and developer solutions in wafer fabrication.
Ultra-Pure Water Systems: High-purity distribution loops for semiconductor rinsing and electronic component cleaning.
Pharmaceutical Handling: Transfer lines for sterile buffers, purified water, and active pharmaceutical ingredient processing.
Chemical Processing: Corrosive reagent dosing lines, scrubber systems, and aggressive solvent transfer manifolds.
Customization Options
Resin Grade Selection: High-purity low-extractable PFA grades tailored for advanced semiconductor nodes.
Dimensional Adaptation: Non-standard reduction ratios and hybrid thread-to-tube configurations for OEM equipment.
Cleanroom Packaging: Double-bagged vacuum-sealed packaging performed inside ISO Class 4 cleanroom facilities.
Laser Marking: Custom part numbers, heat lot tracking codes, and client logos permanently etched onto fitting bodies.
Quality Assurance
Raw Material Testing: Fourier-transform infrared spectroscopy conducted on incoming resin batches to verify molecular purity.
Dimensional Metrology: Automated optical comparator measurements verifying thread pitch and internal bore tolerances within +/-0.05 mm.
Pressure Testing: 100% pneumatic proof testing performed on assembled union connectors prior to packaging.
Cleanliness Verification: Ion chromaIonraphy analysis ensuring metallic ion extractable levels remain below sub-ppb thresholds.
Frequently Asked Questions
Q: Are these connectors compatible with standard PTFE and PFA tubing?
A: Yes, they are dimensionally engineered to fit standard metric and imperial fluoropolymer tubing manufactured to commercial tolerances.
Q: Can these fittings be reused after disassembly?
A: Yes, the robust mechanical design allows multiple assembly and disassembly cycles without sealing degradation, provided components are inspected for wear.
Q: What documentation is supplied with bulk shipments?
A: Material Test Reports, Certificate of Analysis for resin purity, and lot traceability documentation are provided with every order.
Q: What is the standard lead time for custom configurations?
A: Standard catalog items ship within 3 to 5 business days, while customized tooling runs typically require 15 to 25 business days.
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