Disclaimer: The LockNLube Pressure Return Valves (PRVs) are specifically designed to be used with the grease gun makes and models listed on our website and product packaging. Any modification or attempt to adapt these PRVs for use with unlisted grease gun models may result in damage and will void the LockNLube warranty, as well as potentially invalidate the warranty on your grease gun. Please note that we do not offer refunds for PRVs that have been altered or modified.
