PVC Reducer 4″ x 3″

Product Specifications

• Size: 4″ x 3″ (reduces from 4″ to 3″ pipe)
• Material: PVC (Polyvinyl Chloride)
• Color: White
• Schedule/Class: Schedule 40
• Connection Type: Socket × Socket
• Standards: ASTM D2466, NSF-PW
• Maximum Working Pressure: 220 PSI @ 73°F (non-shock)
• Temperature Range: 33°F to 140°F (0.5°C to 60°C)
• Chemical Resistance: Excellent resistance to acids, bases, salts, and many organic compounds
• NSF Certification: NSF-PW certified for potable water applications

Technical Details

• Designed to connect pipes of different diameters (4″ to 3″)
• Features hub × hub socket connections for solvent welding
• Reduces flow restriction compared to bushing-type reducers
• Pressure rating decreases by approximately 0.5% for each 1°F increase above 73°F
• Compatible with standard Schedule 40 PVC pipe (4″ pipe with 4.5″ OD and 3″ pipe with 3.5″ OD)
• Provides smooth interior surface for optimized flow characteristics
• Marked with size designation and ASTM standards for quality assurance

Applications

• Water distribution systems
• Drainage systems
• Irrigation
• Pool and spa plumbing
• Industrial fluid handling
• Wastewater systems
• Stormwater management
• Ventilation systems

Installation Notes

1. Cut pipe squarely and deburr/clean all connecting ends
2. Apply appropriate PVC primer followed by PVC cement to both the fitting socket and pipe end
3. Insert pipe fully into socket with a quarter-turn twisting motion
4. Hold in place for 30 seconds to ensure initial bonding
5. Allow proper cure time per cement manufacturer’s instructions before pressure testing
6. Support piping adequately before and after reducer to prevent stress