Multiquip EM170 Check Valve

The Multiquip EM170 Check Valve is a genuine OEM component designed for a wide range of Multiquip equipment, including centrifugal and diaphragm pumps, diesel and gasoline generators, walk-behind and ride-on power trowels, rollers, light towers, concrete mixers, and welders. As a direct OEM replacement, the EM170 is manufactured to the same specifications as the original part, ensuring a correct fit across all compatible models without guesswork. Confirmed fitment includes models such as QP15HP, MQD2H, MQD3H, DAC7000SS, DAC7000SSA, DAC7000SSW, GA6HZ, AR13HA, V305EK, LT6K, STXDF, and many others across the Multiquip portfolio. When your equipment needs a check valve replacement, sourcing the EM170 directly through an authorized Multiquip dealer like DHS Equipment means you get the right part the first time.

Key Features

• Genuine OEM Construction — Manufactured to Multiquip's original material and dimensional standards, delivering the same one-way flow control performance as the factory-installed unit.
• Direct Drop-In Replacement — Engineered to match the original mounting configuration and port sizing, so installation follows the same procedure as the part being replaced.
• Broad Cross-Equipment Fitment — A single part number that spans pumps (QP15HP, MQD2H, MQD3H), generators (DAC7000SS, GA6HZ), trowels (STXDF, HDA Series, J36-M30), rollers (V305EK, AR13HA), light towers (LT6K), mixers (MC64SK, MC94SK), and welders (DLW400ES).
• Maintains Proper Fluid Flow Direction — A functioning check valve prevents backflow in fuel, hydraulic, or fluid circuits, protecting upstream components from pressure surges and contamination.
• Fuel and Fluid System Integrity — Replacing a worn or failed check valve restores correct system pressure and prevents hard-starting, erratic operation, or premature pump wear caused by reverse flow.

A check valve is a one-way flow control component that allows fluid — whether fuel, oil, or hydraulic fluid — to travel in only one direction through a circuit. It opens under forward pressure and closes automatically to block reverse flow, protecting pumps, carburetors, and other downstream or upstream components from pressure fluctuations and backflow. When a check valve fails or wears out, the result is often hard starting, loss of prime, inconsistent pressure output, or accelerated wear on connected components — making timely replacement essential for keeping any fluid-circuit system running correctly.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.