Injection Check/Back Pressure Valve Assembly - NO QUILL Chem-Tech Series 200 & 250 pumps with wet end codes: AAAA, AAAF, AAAE, AHAA, AHAF, AHAE, BAAA, BAAF, BAAE, BHAA, BHAF, BHAE. 1/2" OD tubing connection fitting with coupling nut 1/2" NPT male connection for the injection point. |