The Genie 48640GT is a genuine OEM Relief Valve, 2500 PSI designed for Genie S-series telescopic boom lifts and Z-series articulating boom lifts, including the S-60, S-65, S-80, S-85, and Z-80/60. As a direct OEM replacement, this valve is manufactured to the same specifications as the original component, ensuring a correct, trouble-free installation in your machine's hydraulic system. Cross-reference part number 48640GT against your Genie parts manual to confirm fitment for your specific serial range before ordering. When hydraulic system integrity is critical to safe operation at height, sourcing a genuine OEM part gives you the assurance that the pressure setting and valve construction match what your machine was built with.
Key Features
- Factory-Rated 2500 PSI Pressure Setting — Pre-set to the exact relief pressure specified for these boom lift hydraulic circuits, eliminating the need for on-site adjustment or calibration.
- Genuine OEM Construction — Sourced directly through Genie's OEM supply chain, this valve meets the same material and tolerance standards as the part originally installed on the machine.
- Direct Drop-In Replacement — Engineered to match the original valve's port configuration and thread spec, allowing straightforward installation without modification to hydraulic lines or manifold fittings.
- Broad Boom Lift Compatibility — Fits the Genie S-60, S-65, S-80, and S-85 telescopic booms as well as the Z-80/60 articulating boom, covering some of the most widely used large-capacity boom platforms in the rental and construction fleet.
- Hydraulic System Pressure Integrity — A correctly functioning relief valve protects pumps, cylinders, and hoses from pressure spikes; a failed or drift-set valve can result in sluggish boom response, component damage, or unsafe operating conditions at elevation.
- Critical Safety Component — On aerial boom lifts, hydraulic pressure regulation is directly tied to safe platform movement and structural load management — using a correctly rated OEM valve supports the system's designed safety margins.
A hydraulic relief valve acts as a pressure safety governor within the machine's hydraulic circuit. When system pressure reaches the valve's rated threshold — in this case 2500 PSI — the valve opens to divert excess fluid back to the reservoir, protecting downstream components such as cylinders, motors, and hoses from over-pressurization. On large telescopic and articulating boom lifts like those in the Genie S and Z series, where hydraulic circuits power boom extension, elevation, and swing functions simultaneously, a properly calibrated relief valve is essential to smooth, predictable operation. A valve that has drifted out of spec, begun to leak internally, or failed outright can cause erratic boom movement, reduced lifting force, excessive heat buildup in the hydraulic fluid, and — in a worst-case scenario — uncontrolled pressure events that compromise structural integrity during elevated operation.
Part Details
| Part Number | 48640GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Relief Valve, 2500 PSI |
Compatibility & Fitment
| Name | Model |
|---|---|
| S-60 | S-60 |
| S-65 | S-65 |
| S-80 | S-80 |
| S-85 | S-85 |
| Z-80/60 | Z-80/60 |
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.
