SAWYER Cleaning Coupling Filter Adapter

The Sawyer Cleaning Coupling (SP150) is a simple plastic adapter for backflushing Sawyer Squeeze (SP129) and Micro Squeeze (SP2129) filters. It replaces the syringe that ships with the filter — instead, thread the coupling onto any standard PET bottle with a 28 mm thread and push water back through the filter in reverse. Backflushing matters for Sawyer's hollow-fiber filters because they gradually trap debris and lose flow rate over time. At 6 g, the coupling is light and small enough to carry as a permanent part of a repair or maintenance kit, even on multi-day trips where the filter needs repeated cleaning. It's useful for anyone running a Sawyer Squeeze or Micro Squeeze who wants a more reliable cleaning method than improvising with the included syringe or a random bottle. The trade-off is narrow compatibility — it only works with 28 mm PCO-thread bottles and these specific Sawyer filter models, so it's not a universal cleaning tool.