4" x 3" Stainless Steel Closet Flange

Product Overview

The Sioux Chief 888-PM Closet Flange is a 4" x 3" PVC flange assembly featuring a stainless steel swivel ring designed for professional-grade installation of water closets in plumbing systems. The corrosion-resistant swivel ring allows for precise bolt alignment during installation while maintaining structural integrity under load. Manufactured as a durable, single-piece unit, the flange is engineered for long-term reliability and secure connection to both 3" and 4" PVC drain piping systems.

Technical Specifications

• Manufacturer: Sioux Chief Manufacturing Company
• Model Number: 888-PM
• Description: PVC Closet Flange with Stainless Steel Swivel Ring
• Reference Number: 1998722
• Nominal Size: 4 in x 3 in
• Material – Body: PVC (Polyvinyl Chloride)
• Material – Ring: Stainless Steel, corrosion-resistant
• Construction: One-piece molded PVC flange body with mechanically attached swivel ring
• Connection Type: Hub or inside 4" DWV pipe / outside 3" DWV pipe
• Mounting Type: Floor mount – mechanical fastening through preformed slots
• Ring Type: 360° stainless steel swivel ring for adjustable closet bolt positioning
• Bolt Slot Spacing: Standard 6" on center
• Application: Installation of floor-mounted water closets to PVC drain systems
• Load Capacity: Engineered to meet or exceed standard plumbing fixture mounting requirements
• Temperature Rating: Suitable for standard building DWV system operating temperatures
• Compliance:
  • Meets ASTM D2665 and D3311 standards for PVC DWV fittings
  • UPC and CSA listed
• Design Features:
  • Stainless steel swivel ring allows 360° rotation for bolt alignment
  • Corrosion-resistant construction ensures long-term performance
  • Solid PVC base provides structural rigidity and alignment accuracy
• Installation: Solvent weld to 4" hub or insert into 3" PVC pipe; mechanically fasten to subfloor

Summary

The Sioux Chief 888-PM Closet Flange is a 4" x 3" PVC flange with a stainless steel swivel ring engineered for professional water closet installations. Its corrosion-resistant construction, single-piece body, and adjustable swivel design ensure secure, code-compliant mounting in residential and commercial DWV systems.