The Multiquip 9430350350 Check Valve is a genuine OEM replacement designed for QP402H and QP402B centrifugal pumps. As a factory-sourced component, it is manufactured to the exact specifications required for proper pump operation, ensuring a direct, trouble-free installation. This check valve is confirmed compatible with the QP402H and QP402B models, making it the straightforward choice when servicing these units. Order with confidence knowing you are receiving the correct Multiquip part for your machine.
Key Features
- Genuine OEM Construction — Manufactured to Multiquip's original material and dimensional specifications, delivering the sealing integrity and flow characteristics this valve position demands.
- Drop-In Installation — Engineered to match the original valve's port size, seat geometry, and connection interface for a direct swap with no rework required.
- Confirmed Fitment — Compatible with QP402H and QP402B centrifugal pumps, so you can verify the correct part before it ships.
- Maintains Prime and Flow Direction — A fully functioning check valve holds pump prime and prevents backflow between pumping cycles, keeping output pressure consistent and startup reliable.
- Prevents Backflow Damage — A worn or failed check valve allows water to reverse through the pump, causing loss of prime, erratic pressure, and accelerated wear on internal components.
A check valve is a one-way flow control component that allows fluid to pass in a single direction while blocking reverse flow. In a centrifugal pump like the QP402H and QP402B, it plays a critical role in maintaining the prime needed to draw water and sustaining consistent discharge pressure during operation. When a check valve fails — through worn seating surfaces, a damaged disc, or a weakened spring — the pump loses its ability to hold prime, resulting in repeated repriming, reduced output, and potential cavitation damage to the impeller and housing.
DHS Equipment is an authorized Multiquip parts distributor. If you need help confirming fitment or have questions about part number 9430350350, contact our parts team directly for assistance.
Part Details
| Part Number | 9430350350 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Check Valve |
Compatibility & Fitment
| Name | Model |
|---|---|
| Centrifugal Pumps | QP402H |
| Centrifugal Pumps | QP402B |
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.
