High Purity Union
The High Purity Union is a precision-engineered fitting used to connect two sections of piping while allowing for easy disassembly and maintenance in ultra-clean fluid handling systems. Manufactured from high-purity materials such as PFA, PVDF, or PTFE, this union provides a leak-tight, chemically resistant connection that maintains fluid purity. It is ideal for systems requiring frequent access or flexible modular designs in contamination-sensitive environments.
Key Features of High Purity Union
- High-Purity Material Composition: Constructed from PFA, PVDF, or PTFE for contamination-free performance.
- Releasable Connection: Allows easy disassembly without compromising the purity or integrity of the system.
- Excellent Chemical Resistance: Handles a wide range of aggressive acids, bases, and solvents.
- Smooth Internal Surfaces: Reduces particle generation and supports laminar flow.
- Thermally Stable: Maintains mechanical properties under elevated temperatures.
- Leak-Proof Seal: Designed to prevent leaks under high-purity operating conditions.
- Cleanroom Fabrication: Manufactured and packaged in ISO Class 100 or better environments.
- Regulatory Compliance: Meets SEMI F57, FDA, and USP Class VI standards.
Technical Information
| Parameter | Details |
|---|---|
|
Available Sizes |
1/4” to 2” (custom sizes available) |
|
Material Options |
PFA, PVDF, PTFE |
|
Connection Type |
Union with flare, socket fusion, butt fusion, or clamp ends |
|
Max Operating Temperature |
PFA/PTFE: up to 260°C
PVDF: up to 150°C
|
|
Pressure Rating |
Up to 150 psi at 20°C (varies by size and material) |
|
Surface Finish (Ra) |
< 15 µin (0.38 µm) for internal surfaces (PFA) |
|
Compliance Standards |
SEMI F57, ASTM D3307/D3222, FDA, USP Class VI |
|
Standards Compliance |
SEMI F57, ASTM D3307/D3222, FDA, USP Class VI |
|
Manufacturing Environment |
ISO Class 100 or better cleanroom |
|
Typical Applications |
DI water lines, chemical distribution systems, ultrapure gas delivery |
HDPE Electro Fusion Fittings
Electrofusion fittings are specialized HDPE components designed with embedded electric heating elements that, when energized, melt and fuse the fitting to the pipe surface. This technique provides a secure, leak-proof, and durable joint, making it ideal for high-pressure and critical pipeline applications. Electrofusion is especially preferred when working in confined spaces, where using large butt fusion equipment is impractical.
HDPE Butt Fusion Fittings
Butt fusion fittings are one of the most reliable and widely used types of HDPE pipe fittings. These fittings are joined using a butt fusion welding process, which involves heating the ends of both the pipe and the fitting to a precise temperature (typically around 200–220°C), then pressing them together under controlled pressure until they fuse into a single continuous piece. This results in a permanent, seamless, and high-integrity joint.
