4 in. Schedule 80 PVC Coupling SCH-80 Pipe Fitting NSF ASTM D2467 3" Slip/Socket

The 247Garden 4 in. Schedule 80 PVC Coupling SCH-80 Pipe Fitting is a heavy-duty connector designed for joining two sections of 4-inch Schedule 80 PVC pipe in a straight line. Constructed from high-quality polyvinyl chloride (PVC), this coupling is engineered for superior durability and long-term performance. It meets ASTM D2467 specifications and is NSF certified, making it suitable for both potable water and industrial applications.

The slip/socket end design allows for a secure, permanent joint when used with PVC solvent cement and primer. With thicker walls than Schedule 40 fittings, Schedule 80 couplings provide increased strength, higher pressure capacity, and greater resistance to impact and stress. This makes them ideal for demanding applications such as water distribution, chemical processing, and high-pressure irrigation systems.

Key Features

• Size: 4 in. nominal pipe size

• Type: Coupling (straight connector)

• Connection: Slip/Socket × Slip/Socket (solvent weld)

• Material: High-strength Schedule 80 PVC

• Standards: ASTM D2467 compliant, NSF certified

• Pressure Rating: Higher pressure capability than Schedule 40

• Interior Finish: Smooth bore for efficient flow

• Installation: Designed for solvent welding with primer and heavy-bodied cement

Benefits

• Corrosion-resistant and maintenance-free

• Superior strength and pressure rating for industrial use

• Leak-proof connections when installed correctly

• Suitable for potable water systems and chemical handling

• Long-lasting, cost-effective solution for demanding applications

Applications

• Potable water supply lines

• Industrial and chemical handling systems

• Agricultural irrigation setups

• Wastewater treatment and drainage systems

• HVAC and cooling water circulation

• General plumbing repairs and extensions

Installation Recommendations

For proper installation of the 4 in. Schedule 80 PVC Coupling, always use:

• Primer: A purple PVC primer (NSF/UPC approved) to soften and prepare the pipe and fitting surfaces.

• Cement: A heavy-bodied PVC solvent cement (meeting ASTM D2564 standards). Heavy-bodied cements are required for pipe sizes 4 inches and larger to ensure a strong, leak-proof bond.

Recommended heavy-bodied solvent cements include:

• Oatey Heavy Duty PVC Cement

• Weld-On 747 Heavy Duty PVC Cement

• Christy’s Red Hot Blue Glue (industrial grade)

Allow appropriate cure times before pressurizing the system, with longer cure periods for large-diameter pipe.

Other 4 in. Schedule 80 PVC Fittings from 247Garden

To complete your piping system, 247Garden also offers a full line of Schedule 80 4-inch fittings, including:

• 4 in. Schedule 80 PVC Elbow (90° Slip/Socket) – For directional changes in high-pressure piping systems.

• 4 in. Schedule 80 PVC Tee (Slip/Socket) – For branching a pipeline into multiple directions.

• 4 in. Schedule 80 PVC Cap (Slip/Socket) – For securely sealing the end of a 4-inch line.

• 4 in. Schedule 80 PVC Union (Slip/Socket) – For easy disassembly and maintenance of large piping systems.

Pairing the coupling with these additional fittings provides a complete solution for complex industrial, commercial, or residential piping layouts.