VACUUM RETENTION VALVE Back Catalog number: 229 Availability: In the manufacturer's stock Price on request - + Recommended 418 NON-RETURN VALVE, O 8-9-10mm Price on request B-2P4T Brass Quarter-Turn Instrument Plug Valve, 1/8 in Price on request MXP7900-000 MX series II Two-position, six-port valve, DL Price on request