S.H PPH Equal Coupling Fitting | S5 1.25MPa Chemical-Grade Hot-Melt Socket Fusion Straight Joint (20mm - 110mm)

Xieyu S.H Premium PPH Socket Fusion Equal Couplings (S5 / 1.25MPa)

Extend and join your industrial, chemical, and fluid-treatment pipeline networks seamlessly with our premium Xieyu S.H PPH socket fusion equal couplings, available at Atradesen.com. Manufactured by Xieyu (S.H / HIEH), a premier global leader in high-performance thermoplastic flow control, these heavy-duty PPH (Polypropylene Homopolymer) equal coupling fittings are engineered to withstand continuous operating pressures up to 1.25 MPa (181 PSI) and temperature loads from -20°C to 100°C.

Featuring standard parallel socket depths and a heavy-duty, thickened wall profile, this professional equal coupling series is highly compatible with industrial chemical pipelines, acid pickling loops, electroplating lines, waste gas scrubbers, waste acid recovery, and wastewater treatment.

High-Capacity Symmetrical Straight-Through Joining

In continuous process piping layouts, establishing a reliable, straight-line connection is vital for chemical distribution and water circulation. Our specialized equal coupling features two identical socket ports to facilitate standard linear connection with zero flow reduction. The robust wall design prevents physical distortion, stress-cracking, or local fatigue under heavy fluid turbulence, water hammer shocks, or thermal contraction.

High-Integrity PPH Material Qualities

• Chemical & Abrasive Wear Resistance: Molded from high-purity Homopolymer Polypropylene, these S5-rated couplings offer superior chemical resistance to highly corrosive media, organic solvents, strong alkalis, and mineral acids.
• Safe & Potable Certified: PPH is entirely non-toxic, lead-free, and odorless, making these straight-through joints completely safe for drinking water pipelines, pharmaceutical loops, and food processing lines.
• Easy Molecular Fusion: The smooth, precision-machined internal socket ends are designed for hot-melt socket fusion welding, forming a unified, leak-proof molecular system.

⚠️ Sizing & Socket Fusion Guidelines

Nominal pipe dimensions are based on standard outer diameters. Please measure your pipe outer diameter (OD) before placing your order:

• Female Socket Ends (ID): The designated nominal size corresponds directly to the outer diameter (OD) of the pipe: 20mm (DN15), 25mm (DN20), 32mm (DN25), 40mm (DN32), 50mm (DN40), 63mm (DN50), 75mm (DN65), 90mm (DN80), and 110mm (DN100).
• Connection Methods: Requires standard socket fusion hot-melt welding connection. Ensure both pipe ends and internal sockets are cleaned and dried before heating to secure optimal molecular fusion. Alternatively, they can be welded using PPH plastic welding rods.

Technical Specifications

Frequently Asked Questions (FAQ)

Q: What are the benefits of PPH equal couplings over standard PVC couplings in chemical processing?

A: PPH (均聚聚丙烯) is composed of pure propylene monomers polymerized in a highly uniform linear crystalline structure. This molecular alignment delivers significantly higher chemical resistance, impact stiffness, and high-temperature stress-crack resistance compared to PVC, preventing deterioration in waste acid recovery loops up to 100°C.

Q: How do I securely weld these PPH straight couplings to our pipe lines?

A: PPH pipes are permanently connected using thermal welding. For smaller sizes (20mm to 110mm), use a standard socket fusion hot-melt welding machine equipped with matching heating adapters to melt the pipe outer wall and the fitting inner socket together, forming a seamless molecular joint.