The Multiquip 33603 2-Inch Diaphragm is a genuine OEM replacement built for MQD2H and MQD3H diaphragm pumps. Sourced directly from Multiquip, this part meets the exact material and dimensional specifications of the original component. It is a direct-fit replacement for the MQD2H and MQD3H, making it the straightforward choice when restoring pump output to full capacity. DHS Equipment stocks this part to keep your Multiquip pump back in service without delay.
Key Features
- Genuine OEM Flex Material: — Manufactured to Multiquip's original compound specification, ensuring the diaphragm delivers the correct flex range and chemical resistance for pump media handled by the MQD series.
- Direct-Fit Installation: — Matches the original bolt pattern, diameter, and port alignment of the MQD2H and MQD3H pump housings for a straightforward swap with standard hand tools.
- Verified MQD Series Compatibility: — Confirmed fitment for the MQD2H and MQD3H diaphragm pumps; use part number 33603 to cross-reference against your service manual before ordering.
- Restored Pumping Efficiency: — A worn or cracked diaphragm causes loss of prime, reduced flow rate, and fluid bypass; replacing it with 33603 restores full displacement and consistent priming performance.
- Fluid Containment Integrity: — The diaphragm is the primary barrier between the pumped fluid and the pump's air chamber; a correctly seated OEM diaphragm prevents cross-contamination and uncontrolled leakage on the jobsite.
The diaphragm is the core pumping element in a diaphragm-style pump. As the diaphragm flexes back and forth, it creates the pressure differential that draws fluid in through the inlet valve and expels it through the outlet — all without the pumped liquid ever contacting a rotating impeller or shaft. This design makes diaphragm pumps well suited for handling slurries, debris-laden water, and other demanding fluids. When the diaphragm cracks, tears, or loses elasticity, the pump loses its ability to hold prime and flow drops sharply, often stopping altogether. Replacing it promptly with the correct OEM part is the fastest way to return the pump to full working condition.
Part Details
| Part Number | 33603 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | 2-Inch Diaphragm |
Compatibility & Fitment
| Name | Model |
|---|---|
| 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.
