Part No. QTVC-0020 QTVC top portion of fine adjust assembly (does not include piston) Replacement parts for hand pumps, calibration manifolds, nitrogen sources and volume contollers Features • Made in the USA QTVC-0020 Specifications Construction Aluminum, Anodized Aluminum Seal materials Buna-N Ralston Instruments Inc. | ralstoninst.com | Toll Free 800-347-6575 | Phone 440-564-1430 | Fax 440-564-1480