Exclusive! Designed to work specifically with WIGGENS's separatory funnels, these pressurerelease valves reduce the hazards of pressure build-up. They simply slip over the drain of a WIGGENS funnel and tighten down with a twist of the wrist. The valve can be easily removed when it is time to drain the funnel. Each valve is made of Teflon® resin and is factory preset to release at 1 psi of pressure.
The valve can be adjusted to release at pressures up to 5 psi by turning the pressure release slug on the top of the valve with a screwdriver. Models are also available to convert other separatory funnels to automatically vent. Weight: 0.10kg.