Metering device Seal Back Catalog number: 11-3830 Availability: In the manufacturer's stock Price on request - + Recommended CTS-21010 Cartridge Check Valve Housing, 2/pk Price on request CTS-21564 Needle, Uncoated 10 Series Price on request CTS-12016 Compression Screw, 1/16", SS, 10/pk Price on request