The Multiquip 42637 is a genuine OEM Check Valve 1/4 MNPT x 1/4 FNPT 3 PSI designed for Whiteman ride-on power trowel models including the HTX6H, HTXG6DF, STX6H, HHXDF4-DF5, and STXDF series. As a direct OEM replacement, part 42637 meets the exact pressure rating and thread specification required by the hydraulic system in these machines. Sourced directly through Multiquip's authorized parts network, this valve ensures your trowel operates within its designed parameters. DHS Equipment stocks this genuine OEM component so you can get back to work without compromise.
Key Features
- Exact Pressure Rating: — Rated at 3 PSI with 1/4 MNPT x 1/4 FNPT threading, matching the hydraulic system specification of Whiteman ride-on trowels precisely.
- Genuine OEM Component: — Manufactured to Multiquip's original design standards, ensuring correct material grade, sealing integrity, and cracking pressure for this application.
- Direct Drop-In Replacement: — Threaded fittings align directly with existing hydraulic ports on compatible trowel models, allowing straightforward installation without adapters.
- Broad Trowel Family Coverage: — Confirmed fitment across the HTX6H, HTXG6DF, STX6H, HHXDF4-DF5, and STXDF Whiteman ride-on power trowel models.
- Hydraulic System Integrity: — A correctly functioning check valve maintains unidirectional flow control, preventing backflow that can cause erratic blade pitch response or loss of hydraulic pressure.
- Fuel System Safety Relevance: — Proper cracking pressure ensures the hydraulic circuit holds prime and responds consistently, supporting safe, predictable machine control during finishing operations.
A check valve is a one-way flow control component within the hydraulic circuit of a ride-on trowel. Its job is to allow hydraulic fluid to pass in one direction while blocking reverse flow, maintaining pressure and protecting sensitive components upstream. When a check valve fails or begins to leak past its seat, the result is typically a loss of hydraulic pressure, sluggish or inconsistent blade pitch adjustment, and potential damage to other hydraulic components caused by uncontrolled backflow. Replacing a worn or faulty check valve with the correct OEM-rated part restores proper circuit function and keeps the trowel responding accurately to operator inputs.
Part Details
| Part Number | 42637 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Check Valve 1/4 MNPT x 1/4 FNPT 3 PSI |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | HTX6H |
| Whiteman Ride-On Power Trowels | HTXG6DF |
| Whiteman Ride-On Power Trowels | STX6H |
| Whiteman Ride-On Power Trowels | HHXDF4-DF5 |
| Whiteman Ride-On Power Trowels | STXDF |
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.
