NON-RETURN-VALVE, O 12-13-15mm Back Catalog number: 419 Availability: In the manufacturer's stock Price on request - + Recommended 1002734380 1/4 " Flow Check Valve for Aq37X Price on request 7010-071 Tefzel rotor seal for 7010 Price on request CTS-A019 Manual Injection Valve Rotor Seal, Vespel® Price on request