No more pressure locks! Returns grease to the tube. No more messy disconnects.

The LockNLube Pressure Return Valve (PRV) allows grease to flow from the hose back to the barrel with just the twist of a knob. No more pressure locks and messy, unsafe disconnections.

Designed to work best with the LockNLube® Grease Coupler!

• Eliminates waste and extends coupler life.
• Installs in minutes!
• A MUST-HAVE for your cordless grease gun!
• Compatible with Milwaukee® M18™ and M12 and RYOBI® ONE+ 18V Cordless Grease Guns.

LockNLube's mission has always been to END GREASING FRUSTRATION. With that in mind, we are so excited to bring you this innovative solution to a persistent issue that every person who uses a cordless battery grease gun deals with.

We have all had that experience of going to grease a Zerk and finding out that it doesn't take grease because these guns so quickly build so much pressure that before you know it, it's cycled two or three times, and you've got 10,000+ pounds of back pressure in the hose.

The LockNLube Pressure Return Valve solves the issue of the pressure lock that these guns create when you hit a clogged grease fitting. 

With the LockNLube Pressure Return Valve you can now return all that back pressure, and all that grease that's sitting in the hose, and bring it right back into your tube of grease.

What that means is no wasted grease, no mess, and a really clean easy disconnect from these clogged grease fittings.

Designed to work with the LockNLube® Grease Coupler!

Three versions customized to the most popular Battery Grease Guns:

• LNL81300-M Compatible with Milwaukee® Brand M18™ and M12 ™ and RYOBI® ONE+ 18V Cordless Grease Guns.
• LNL81300-D Compatible with DeWalt® 20V Max* Cordless Grease Guns.
• LNL81300-L Compatible with Lincoln® 1800-Series PowerLuber Cordless Grease Guns.

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.

Using a grease coupler with an integrated check valve will reduce the effectiveness of the Pressure Return Valve.

• No more pressure locks! 
• Returns grease to the tube.
• Releases hose back pressure.
• Eliminates waste and extends coupler life.
• Installs in minutes! 
• A MUST-HAVE for your cordless grease gun!