One-way Valve - from Flexolite These are flap valves which have minimal effect on flow. Item Variants OFAF10 -10JIC - £97.50 OFAF12 -12JIC - £120.00 OFAF6 -06JIC - £59.00 OFAF8 -08JIC - £67.00 Name Email Question One-way Valve - from Flexolite I have read and agree to the Terms and Conditions of this site Some of the noted Brands we work with