FATSAC Ballast Bag Check Valve and Drain Adapter Kit

The FATSAC check valve and adapter upgrade the standard Quick Twist fitting on a compatible ballast bag. Its built-in one-way valve helps retain water when the pump is disconnected. The two-piece fitting is useful when you want fewer spills during ballast changes.

The connection is designed to attach and release like the standard FATSAC adapter. It can also serve as a manual one-way valve while filling with a compatible Supa Pump. A bypass adapter is supplied to allow the bag to empty when draining is needed. The bypass function is intended for emptying and is separate from the check valve’s filling function.

O-rings required for the fitting are included. The valve can also be used to inflate a compatible bag with a standard air pump. This is an accessory for a ballast system, not a complete bag or pump assembly. Browse more general boat outfitting.

• Replaces a standard FATSAC Quick Twist adapter
• One-way valve helps prevent water loss on disconnection
• Includes bypass adapter for draining
• O-rings included for the connection