The Multiquip 336007090 is a genuine OEM Check Valve Neoprene Assembly Kit 2-Inch designed for MQD2H, MQD2HA, MQD3H, and MQD3HA diaphragm pumps. This direct-from-Multiquip replacement ensures the valve assembly matches the original design, material grade, and dimensions specified for these pump models. Sourced as an OEM part, the 336007090 delivers the same neoprene construction and assembly configuration as the unit it replaces, keeping your diaphragm pump operating as intended. Confirm your pump model against the fitment list before ordering to ensure compatibility.
Key Features
- Neoprene Construction for Fluid Compatibility — Neoprene valve material provides resistance to the abrasive slurries and moderate chemicals commonly handled by diaphragm pumps, maintaining valve integrity under continuous cycling.
- Complete Assembly Kit — Supplied as a full assembly kit so all necessary valve components are replaced together, eliminating the need to source individual pieces separately.
- 2-Inch Valve Sizing — Sized to match the 2-inch port configuration on covered models, allowing direct installation without reworking pump inlet or discharge connections.
- Fits MQD2H, MQD2HA, MQD3H, and MQD3HA Diaphragm Pumps — Verified fitment across the MQD2H and MQD3H series, including both standard and HA variants, making it a practical stocking item for operators running multiple pump sizes.
- Genuine OEM Quality Control — As a genuine Multiquip OEM part, the 336007090 is manufactured to the same valve seat tolerances and material specifications as the original, ensuring consistent seal and flow direction performance cycle after cycle.
- Critical Fluid Control Component — A properly functioning check valve prevents backflow between pump strokes, directly affecting discharge pressure and pump efficiency. Replacing a worn valve assembly restores correct unidirectional flow through the pump.
A check valve in a diaphragm pump controls the direction of fluid flow through the pump body, opening to allow fluid through on the intake or discharge stroke and closing to prevent backflow on the return stroke. When the neoprene valve material wears, cracks, or loses its ability to seat properly, the pump loses prime, output pressure drops, and fluid begins cycling back rather than moving forward through the discharge line. Replacing the full valve assembly with a correctly specified kit like the Multiquip 336007090 restores proper unidirectional flow, re-establishes priming ability, and returns the pump to its rated output.
Part Details
| Part Number | 336007090 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Check Valve Neoprene Assembly Kit 2-Inch |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diaphragm Pumps | MQD2HA |
| Diaphragm Pumps | MQD3HA |
| Diaphragm Pumps | MQD2H |
| Diaphragm Pumps | MQD3H |
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.
Multiquip
Multiquip 335407090 Check Valve Neoprene Assembly Kit 3-Inch
