Starway - Automatic Backwash Valve Viton O-Ring 56.75 × 3.53 mm (Type 4227) - 7039410

Starway – Automatic Backwash Valve Viton O-Ring 56.75 × 3.53 mm (Type 4227)

This is a genuine Starway replacement Viton O-ring (reference type 4227) measuring 56.75 mm inner diameter × 3.53 mm cross-section. It provides a critical fluid-tight seal within the Starway motorized 5-way automatic backwash valve, preventing water leakage during filter backwash cycles. Replacing a worn or damaged O-ring promptly restores reliable valve operation and prevents unnecessary water or pressure loss.

Compatibility

This O-ring is a genuine spare part for the Starway Automatic Backwash Valve (motorized 5-way valve), available in Ø50 mm and Ø63 mm pipe versions. Always cross-reference the type number 4227 and the exact dimensions (56.75 × 3.53 mm) against your valve’s parts diagram before ordering to confirm fitment.

Why Viton and Why Genuine

Viton (FKM fluorocarbon rubber) offers superior resistance to pool chemicals, chlorine, and elevated temperatures compared to standard EPDM or Nitrile O-rings — making it the correct material specification for this valve. Using a genuine Starway part ensures the O-ring matches the original dimensional tolerances and material grade, maintaining a leak-free seal at the valve’s rated operating pressure.

Installation

Before fitting, clean the O-ring groove thoroughly to remove any debris or residue from the old seal. Apply a thin layer of compatible silicone grease to the O-ring to ease installation and extend its service life. Take care not to twist or nick the O-ring during fitting; a damaged seal will not hold pressure correctly.