Lincoln 272658 Quicklinc Check Valve Fitting

Aftermarket 272658 Quicklinc Check Valve Fitting

This page describes an aftermarket check valve outlet fitting that cross-references the Lincoln 272658. Lincoln is a trademark of its respective owner. This is an aftermarket fitting, not manufactured, sponsored, or endorsed by Lincoln. 272658 designations are for cross-reference identification only. The M10 x 1 threaded check valve fitting works in Quicklub high-pressure systems. It provides one-way flow at divider valve outlets. The fitting is made for 1/4 inch OD steel tubing and Quicklinc high-pressure connections.

How the Check Valve Works

The fitting uses a spring-loaded ball check with positive sealing. Flow moves one way only, and the direction is shown by the arrow on the body. The check prevents pressure equalization and backflow between cycles. Lubricant stays at the divider for the next cycle.

Specifications

Where It Fits

The fitting installs at Quicklub divider valve outlets and inlets. It works in automated lubrication systems. It is used in construction equipment centralized lubrication. The check keeps consistent pressure at critical bearing points.

Keeping line pressure between cycles matters on long tube runs and at points fed through restrictive passages. Without a check at the outlet, lubricant can drain back toward the divider while the pump rests, so the first part of the next cycle refills the line instead of reaching the bearing. A checked outlet keeps the column of grease in place, so each cycle delivers its full metered amount where it is needed.

During service, inspect the ball check for free movement and the seat for wear marks. A sticking ball can block flow completely, while a worn seat lets grease slip back and weakens the pressure hold. Both conditions show up as dry points or uneven divider cycling long before the fitting looks damaged from the outside.

Steel Tubing Versus Nylon

This fitting is for the steel-tubing Quicklinc system with hose studs. For 1/4 inch OD NYLON tubing push-in connections, the 244883 adapter style applies instead. Confirm your tube material before ordering. See the SSV divider valve guide for more detail.

What to Confirm Before Ordering

Confirm the divider port is M10 x 1. Confirm tubing is 1/4 inch OD steel or the hose-stud arrangement. Confirm the correct hose stud, 272401 or 272394, is available. Confirm working pressure is within 6,000 psi. Confirm flow direction from the arrow at installation. For wider system context, review progressive lubrication systems. If you are unsure about your setup, contact the team.

Frequently Asked Questions

What is the pressure rating?

The working pressure is up to 6,000 psi. That equals 413 bar.

Does it use nylon or steel tubing?

This fitting uses steel Quicklinc tubing with hose studs. Nylon tubing uses the 244883 style instead.

Which hose studs pair with it?

The fitting pairs with hose studs 272401 and 272394. Confirm the stud type before install.

What does the check valve do?

It allows one-way flow only. This prevents backflow and pressure loss between cycles.

How do I know flow direction?

Look for the arrow on the body. Install with the arrow pointing in flow direction.

What thread does it have?

The fitting thread is M10 x 1. Check your divider port before ordering.

Where does it install?

It installs at divider valve outlets and inlets. It is used in Quicklub systems.

What material is it?

The body is hardened steel with zinc plating. This supports high-pressure lubricant flow.

Will it fit my divider?

Confirm your divider has an M10 x 1 port. Also confirm the tube type is correct.

Who builds this fitting, and how do I get a quotation?

IsoHiTech Lubrication Systems, founded in 2023, engineering since 2006, builds and supports every unit. Email inquiry@isohitech.com for specifications and a quotation.

Contact the team with your divider model and tube type.