Part No. QTVC-0018 QTVC fine adjust piston only Replacement parts for hand pumps, calibration manifolds, nitrogen sources and volume contollers Features • Made in the USA QTVC-0018 Specifications Construction Aluminum, Brass Seal materials Buna-N, Teflon Ralston Instruments Inc. | ralstoninst.com | Toll Free 800-347-6575 | Phone 440-564-1430 | Fax 440-564-1480