I get from Hydraulic Components in Germiston, but I believe Actom in Paarden Island do them?
They only shut off one way so I put that on the Tank side.
They are solid Brass, I have used them for 20 years, on my Pig no issues.
Part Nos: 21KATF08MPX & 21SFTF08MXX
Parker Store, 55 Neptune...