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 CS-CF-00190 Valve Assembly Price on request 418 NON-RETURN VALVE, O 8-9-10mm Price on request