Orders over $299 get FREE SHIPPING with code "SAVEONSHIPPING" (*some exclusions apply) | Our normal processing time for all items on our website that are not marked "sold out" is 1-2 business days from order confirmation to shipment. If you are happy with your order, we humbly ask that you share about our little Brooklyn company with your friends and family. With your help, we can keep local people employed and continue to provide products for all.
See Our Products
The second reason is more significant: they protect us from infecting others if it turns out we are infected and don’t know it.
Valves defeat that second purpose.