The Multiquip 337030000 Diaphragm is a genuine OEM component designed for MQD2HA and MQD3HA diaphragm pumps. As a direct Multiquip OEM part, it meets the exact material and dimensional specifications of the original, ensuring proper sealing, flex characteristics, and pump output from day one. This diaphragm is the correct replacement for both MQD2HA and MQD3HA models, so you can order with confidence knowing it will install and perform as intended.
Key Features
- OEM-Grade Flex Material — Manufactured to Multiquip's original compound and thickness spec, delivering the correct elasticity and chemical resistance for sustained pumping cycles.
- Direct-Fit Replacement — Matches the original mounting pattern and geometry of the pump housing, dropping in exactly where the worn diaphragm came out.
- Confirmed Fitment for MQD2HA and MQD3HA — Verified compatible with Multiquip MQD2HA and MQD3HA diaphragm pump models.
- Restores Full Flow Rate — A worn or cracked diaphragm causes loss of prime, reduced output, and fluid bypass; replacing it with part 337030000 brings the pump back to rated capacity.
- Leak Prevention — Intact diaphragm integrity is critical in fluid-handling applications — a failed diaphragm allows pumped media to migrate into the pump mechanism, causing rapid internal damage.
The diaphragm is the core pumping element in a diaphragm pump, flexing back and forth to create the pressure differential that draws fluid in on one stroke and forces it out on the next. Because it is in constant mechanical and chemical contact with whatever is being pumped, it is subject to fatigue, cracking, and chemical degradation over time. When the diaphragm fails, the pump loses suction, output drops sharply, or fluid bypasses entirely — bringing the job to a halt. Replacing it promptly with the correct OEM part restores the pump to its original operating condition.
Part Details
| Part Number | 337030000 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Diaphragm |
Compatibility & Fitment
| Name | Model |
|---|---|
| Diaphragm Pumps | MQD2HA |
| Diaphragm Pumps | MQD3HA |
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.
