Air Valve For FlexFlow Series Water Purifier.

A handy tool to restore your purifier’s flow in seconds — just fill with pure water, connect it with the outlet of the filtration cartridge, and squeeze.

ONLY fits FlexFlow Pro Cup Head.

Up to 500L (with proper maintenance; actual lifespan depends on water quality). Backwashable.

Filter Layers:

• Stage 1: NanoFlex Carbon
• Stage 2: 0.1μm Hollow Fiber Membrane

Filtration Efficiency

• Removes 99.999% of bacteria, parasites, viruses, 99.99% of microplastics.
• Improves water taste.
• Reduces organic pollutants, ammonia nitrogen, chlorine.

Flow Rate:

Filters 15–20mL/sec, depending on water quality and filter usage.

Warnings:

❗ Do NOT use with:

• Saltwater (ocean water), chemically polluted water, or water with visible oil
• Extremely turbid water — pre-settle for 30min before filtering
• Hot water (>80°C / 158°F) – it might damage the cup head and filter.

Air Valve and Nozzle Cap included.

Fits FlexFlow and FlexFlow Pro Silicone Cup Body.

Material:

• Tritan
• Food-Grade Silicone
• 316 Stainless Steel （For Air  Valve Spring）

🧳 Lightweight & Compact
✈️ Perfect for Travel
💧 Squeeze & Drink Instantly

Lightweight squeeze filtration for travel and everyday exploration.

The OASSAY FlexFlow Pro Filtration System is a versatile, high-performance water filtration solution designed for outdoor enthusiasts, travelers, and everyday use. Combining advanced dual-stage filtration with modular adaptability, it delivers safe, great-tasting water from lakes, streams, or taps. 

Its unique cup-head design allows standalone use or integration with standard bottles and hydration systems.

🔥 Fire-Safe Titanium Cup
🏔 Built for Serious Outdoor Exploration
🤝 Heat, Share & Rehydrate

Outdoor-grade squeeze filtration with detachable titanium cup

The OASSAY FlexFlow Pro Filtration System is a versatile, high-performance water filtration solution designed for outdoor enthusiasts, travelers, and everyday use. Combining advanced dual-stage filtration with modular adaptability, it delivers safe, great-tasting water from lakes, streams, or taps. 

Its unique cup-head design allows standalone use or integration with standard bottles and hydration systems.

Nozzle Cap For Flex Flow Series Water Purifier

Material: Food-Grade Silicone

Save more to buy these products together!

1× OASSAY Pro Lite

1× Extra Filter Cartridge

1× Bottle Clip

Save more to buy these products together!

1× OASSAY Pro Titan

1× Extra Filter Cartridge

1× Bottle Clip

A compatible drinking hose 

It's perfect for connecting your filtration cartridge to natural water sources.

Length：0.4 meter

Material: Food-Grade Silicone

Fits FlexFlow and FlexFlow Pro

Fits for FlexFlow and FlexFlow Pro

Material：

Pure Titanium