NON-RETURN VALVE, O 8-9-10mm Back Catalog number: 418 Availability: In the manufacturer's stock Price on request - + Recommended 0840.712 Syringe valve including valve bush Price on request 1002734380 1/4 " Flow Check Valve for Aq37X Price on request B-2P4T Brass Quarter-Turn Instrument Plug Valve, 1/8 in Price on request