1-1/4 inch PVC DWV Adapter Plastic x Male

1-1/4 inch PVC Male Adapter – Solvent Weld x Male Thread Transition Fitting

The 1-1/4 inch PVC Male Adapter is a molded fitting designed to transition from solvent-welded piping to a threaded connection in drain, waste, and vent (DWV) systems. Featuring a socket (hub) end for solvent bonding and a male NPT-threaded end, this fitting allows for a secure mechanical joint to valves, cleanouts, or other threaded components.

Manufactured from rigid polyvinyl chloride (PVC) and conforming to ASTM D2665 standards, the adapter provides dimensional accuracy, corrosion resistance, and chemical compatibility for non-pressurized sanitary plumbing systems. It is rated for gravity drainage and is not intended for use in pressurized potable water lines unless explicitly approved for such applications.

Key Performance Features

• ✅ Connection Type: Female socket (solvent weld) x Male NPT (threaded)
• ✅ Nominal Size: 1-1/4 inch
• ✅ Material: PVC – suitable for DWV applications and resistant to degradation from common household chemicals
• ✅ Thread Standard: ANSI/ASME B1.20.1 for tapered pipe threads
• ✅ Use Environment: Non-pressurized indoor or underground drainage systems

Applicable Standards

• ASTM D2665: Specification for polyvinyl chloride (PVC) plastic drain, waste, and vent pipe and fittings
• NSF/ANSI 14: Certified for plastic piping system components and related materials

Installation Guidelines

For the socket end, clean and apply PVC primer and solvent cement per manufacturer recommendations. Insert and rotate to ensure uniform bonding. For the male-threaded end, use a non-hardening thread sealant or PTFE tape approved for plastic fittings. Avoid over-torquing to prevent thread deformation or failure at the transition point. This adapter is not intended for thermal cycling or high-pressure applications.

Common Use Cases

The 1-1/4 inch PVC Male Adapter is frequently used in residential and light commercial DWV systems to connect solvent-welded piping to threaded fixtures, test plugs, or service cleanouts. It allows for modular or removable assembly configurations and is ideal for areas requiring future maintenance or access.

Material Note

PVC is chemically resistant, lightweight, and easy to install, making it a preferred material for DWV applications. However, PVC fittings must be installed in accordance with local code and manufacturer guidelines to ensure long-term reliability and performance.

The 1-1/4 inch PVC Male Adapter is a dependable fitting for threaded-to-solvent-weld transitions in gravity-fed systems, offering ease of installation and dimensional compatibility for code-compliant DWV assemblies.