Description Description The Haskel 16517 is a spacer sleeve made of stainless steel that is used to secure the pilot valve retainer in the air drive system of the Haskel liquid pumps. The Haskel 16517 is compatible with the 10 HP pump series, 14" series, which are designed for high-pressure applications and can handle various fluids and gases . State of California Proposition 65 WARNINGCancer and Reproductive Harm - www.P65Warnings.ca.gov. Literature & Docs Accessories