The Multiquip 3054992 Top Diaphragm is a genuine OEM replacement designed for MQ-D306HA, D306, and MQ-D305 series diaphragm pumps. As a factory-sourced component, it meets the original material and dimensional specifications required to restore proper pump operation. This part is verified to fit the MQ-D306HA, D306, and MQ-D305, making it the straightforward choice when it's time to rebuild or service your diaphragm pump. Order with confidence knowing you're getting the correct part backed by Multiquip's OEM supply chain, available through DHS Equipment.
Key Features
- OEM-Grade Flexure Material — Manufactured to the original compound and thickness spec, ensuring the diaphragm flexes and seals as designed under normal pumping pressures.
- Drop-In Top Diaphragm Replacement — Engineered to seat correctly in the pump head without reworking the mounting surface or hardware.
- Fits MQ-D306HA, D306, and MQ-D305 — Confirmed fitment across the MQ diaphragm pump family, so you can order with confidence for your specific unit.
- Restores Full Pump Output — A worn or ruptured top diaphragm causes loss of prime, reduced flow, and fluid bypass; replacing it with a correct OEM part brings pump output back to rated capacity.
- Fluid Containment Integrity — A properly functioning top diaphragm is critical for preventing fluid from migrating into the pump housing, protecting internal components from contamination and premature wear.
The top diaphragm is a flexible membrane that forms the pumping chamber inside a diaphragm pump. As it cycles back and forth, it draws fluid in through the inlet valve and pushes it out through the discharge — all without the fluid ever contacting the drive mechanism. When the diaphragm cracks, tears, or loses its flexibility, the pump loses prime, output drops sharply, and fluid can reach parts of the pump it was never meant to contact. Replacing a faulty top diaphragm promptly is one of the most cost-effective ways to bring a diaphragm pump back to full working condition.
Part Details
| Part Number | 3054992 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Top Diaphragm |
Compatibility & Fitment
| Name | Model |
|---|---|
| MQ Diaphragm Pumps | MQ-D306HA |
| MQ Diaphragm Pumps | D306 |
| MQ Diaphragm Pumps | MQ-D305 |
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.
