1/4 " Flow Check Valve for Aq37X Back Catalog number: 1002734380 Manufacturer: YOUNG LIN INSTRUMENT Availability: Currently unavailable Price on request - + Recommended B-2P4T Brass Quarter-Turn Instrument Plug Valve, 1/8 in Price on request 1002734873 Insert Acetal N-Valved Price on request 419 NON-RETURN-VALVE, O 12-13-15mm Price on request