Marathon Drain - Straight Rubber Couplings, Flexible, PVC, Joiners, Black

Marathon Straight Rubber Couplings are flexible black PVC joiners designed to connect same-size pipe systems ranging from 2″ to 6″. Each coupling includes stainless steel clamps for a secure, leak-proof connection and is resistant to UV rays, chemicals, sewer gases, soil, and fungus. These couplings are versatile, easy to install, and suited for roof drains, waste systems, vent piping, and general plumbing repairs.

Key Features:

• Available in 2″, 3″, 4″, 5″, and 6″ models (SKUs BC1-2415, BC1-2420, BC1-2430, BC1-2435, BC1-2345)
  
• Black flexible PVC rubber construction
  
• Stainless steel clamp bands and fasteners
  
• Leak-proof, rust-proof, and chemical resistant
  
• Operates in a wide temperature range for versatile applications

• Clamp band material: Type 301 AISI stainless steel
• Clamp screw hardware: Type 304 AISI stainless steel, 5/16″ hex-head fasteners
• Maximum test pressure: 4.3 PSI (29.6 kPa)
• Maximum operating temperature: 140 °F (intermittent)
• Minimum operating temperature: -30 °F
• Gasket/elastomer compliance: ASTM C 1173 Table 1

• Select the correct size coupling (2″, 3″, 4″, 5″, or 6″) to match the pipes being joined.
• Align the pipe ends and ensure both are clean and cut square.
• Slide the coupling over the pipe ends until centered on the joint.
• Position stainless clamps evenly over each pipe end.
• Tighten clamps using a torque wrench to 60 in-lbs.
• Inspect to confirm a tight, even, leak-proof seal.

Q: What materials are the clamps made from?
A: The clamp bands are Type 301 stainless steel, and the fasteners are Type 304 stainless steel with 5/16″ hex-head screws.

Q: What temperature range do these couplings handle?
A: They operate from -30 °F to 140 °F intermittently.

Q: What is the maximum pressure rating?
A: The couplings are rated for a maximum test pressure of 4.3 PSI (29.6 kPa).

Q: Are these couplings resistant to environmental exposure?
A: Yes, the PVC rubber resists UV rays, sewer gases, soil, fungus, and chemicals.

Q: What pipe sizes are covered?
A: They are available for same-size pipe connections in 2″, 3″, 4″, 5″, and 6″.