The Ultimate in Secure Pipe Connections
Yinlong's PPSU Axial Fittings, also known as Sliding Sleeve fittings, provide an exceptionally strong and reliable mechanical joint for PE-X pipes. This system is renowned for its durability and security, as it uniquely utilizes the pipe's own material to create the seal, completely eliminating the need for O-rings or other extra sealing elements.
The connection is made by sliding a robust PVDF sleeve over the pipe and fitting assembly with a compression tool. This action creates a permanent, full-bore connection that is virtually impossible to pull apart, making it ideal for high-pressure applications and installations in concealed spaces like walls and floors.
Our Axial Fitting Range
A complete range of fittings and sleeves for professional plumbing systems.
Equal Tee
Reduce Tee
90° Elbow
Equal Coupling
Reduce Coupling
PVDF Sleeve
Advantages and Specifications
Key Features & Benefits:
- O-Ring Free Design: The ultimate in reliability, as there are no rubber seals to degrade or fail over time. The pipe itself forms the seal.
- Maximum Flowrate: The fitting's internal diameter is consistent with the pipe's, resulting in minimal pressure drop and superior hydraulic performance.
- Extreme Pull-Out Strength: The mechanical compression of the sleeve creates a joint so strong it can withstand extreme force and pressure.
- Lightweight & Durable PPSU: Fittings are made from Polyphenylsulfone, offering excellent resistance to heat, pressure, and chemical corrosion.
- Safe for Concealed Installation: Due to its unmatched reliability, this system is a preferred choice for installation behind walls, under floors, and in ceilings.
Technical Specifications:
| Body Material | PPSU (Polyphenylsulfone) |
| Sleeve Material | PVDF (Polyvinylidene Fluoride) |
| Compatible Pipe | PE-Xa, PE-Xb, PE-Xc Pipes |
| Connection Method | Axial Compression with Sliding Sleeve |
| Applicable Standards | ISO 21003, ISO 1167, GB/T 18997 |
| Available Sizes | 16mm - 32mm |
| Max. Temperature | 95°C / 203°F |
| Max. Pressure | 10 bar / 145 psi |
Specify the most secure system for your project.
Our complete product catalog contains all technical data you need to get started.
Download Catalog (PDF)