VAPLOCK™ EF-100 carbon filters require an adapter for connection to various emission sources. Each filter contains a tapered 1/4” female NPT port; select from the list below to adapt filters to a typical system, or contact your distributor for assistance with any special requirements. Note that filter adapters for Justrite containers are made to fit either stainless steel or Polypropylene quick disconnects, but may not be interchanged. Stainless must connect to stainless, Polypropylene to Polypropylene. Stainless quick disconnect options allow for either a Teflon or Viton O-ring.