1/4 " Flow Check Valve for Aq37X Back Catalog number: 1002734380 Manufacturer: YOUNG LIN INSTRUMENT Availability: Currently unavailable Price on request - + Recommended 7010-071 Tefzel rotor seal for 7010 Price on request SS4CPA2RT50 Stainless Steel 1PiecePCPA Adj Check Valve Price on request B-2P4T Brass Quarter-Turn Instrument Plug Valve, 1/8 in Price on request