**Definition**:
HDPE Transition Couplings are fittings designed to connect high-density polyethylene (HDPE) pipes to other piping materials, such as grooved steel pipes. They provide a direct transition between HDPE and steel piping systems, ensuring a secure and leak-tight connection.
**Applications**:
These couplings are used in various applications where a transition from HDPE to steel pipes is required, such as in water supply systems, wastewater management, and industrial processes. They are particularly useful for joining plain end HDPE pipes to grooved IPS (Iron Pipe Size) pipes, valves, and fittings.
**Material Specifications**:
- Housings are typically made of ductile iron conforming to ASTM A-536, grade 65-45-12, and can be hot dip galvanized.
- Gaskets can be specified with different materials for different temperature and chemical resistance needs, such as Grade "E" EPDM (Ethylene Propylene Diene Monomer) or Grade "T" nitrile.
**Performance**:
HDPE Transition Couplings are designed to mechanically join HDPE pipe, eliminating the need for special heat fusion, solvent joining, or special adapters. The toothed gripping ends are not intended for use on PVC pipe or other materials.
**Installation**:
These couplings are installed by securing them to both the HDPE and steel pipes, ensuring a tight seal. It is recommended to use a silicone-based lubricant for the HDPE series, such as Shurjoint's EHC lubricant, and to avoid hydrocarbon-based oils, grease, or soap-based solutions to prevent joint failure.
HDPE Transition Couplings offer a reliable and efficient method for connecting HDPE pipes to steel pipes, providing a strong and durable connection suitable for various industrial and municipal applications.