Mechanical lubricator check valve

[Coal&Water]

Hi, I am in need of a non return valve for a mechanical lubricator, does any one have any for sale or know of a supplier.

Thanks, Mike.

[steam wagon]

We bought this one-

http://www.heritagesteamsupplies.co....ners/p-297-725

[8_10 Brass Cleaner]

Traditionally something like this was used

http://www.donaldson.com/en/ih/suppo...ary/033988.pdf

The trouble with the type shown earlier is that they take an awfull lot of oil to fill them, before any gets into the cylinder.