Here's what other sites are saying:
You don't have to be the fix-it type to appreciate what the Platypus Shut Off Valve can do for your leaky hydration tube. Simply swap your defective unit out with this superior valve, which starts and stops the flow of water through your drinking tube with a quick turn. The Shut Off Valve also features a 90-degree angle which makes for more ergonomic sipping while you're in motion.
Platypus Camp & Hike Ergo Shut-Off Valve 6697. Compatible with any Platypus and MSR hydration reservoirs.
Platypus Shut Off Valve is a great upgrade that prevents spills. Convenient 90 degree angle for fast and easy hands-free hydration. High flow rate for easy drinking. Just twist the collar to open or close. Compatible with 1/4 inch inner diameter tubes on hydration reservoirs. Weight: .2 oz. or 4.8g. Width: 2 in. or 5.1cm. Length: 1.4 in. or 3.6cm. Materials: Polypropylene and HDPE
- Tahoe Mountain Sports
Description Of Platypus Shutoff ValveA great upgrade that not only prevents spillsjust twist the collar to open or closebut also features a convenient 90 angle and high flow rate for fast and easy hands-free hydration.FeaturesWeight .2 oz 4.8 gWidth 2 in 5.1 cmLength 1.4 in 3.6 cmCompatible with.25-inner-diameter tubeMaterials PPHDPEMade in Seattle, USA
- US Outdoor Store
This new shutoff valve is angled at 90 for easy hands-free hydration.