I have a brand new, unused, check valve from RLBS in England (Model EWL). This is designed to prevent the beer flowing forward through the beer engine when there is no demand (pump not being pulled) and is essential if you are building a handpump/beer engine setup. These are difficult to come by and I ordered two to meet a credit card minimum amount when I needed one.
The connections are a 3/8" John Guest IN + 1/2" Serrated Outlet Tail for PVC Hose.
$25 Shipped in the US
Paul
The connections are a 3/8" John Guest IN + 1/2" Serrated Outlet Tail for PVC Hose.
$25 Shipped in the US
Paul