Harbor Freight Bottle Jack Relief Valve Knob – ABS Pressure Release Handle Upgrade

Upgrade the usability of your Harbor Freight shop press bottle jack with this Relief Valve Knob Upgrade, designed to replace the awkward factory T-handle operation with a more comfortable and controlled grip.

The OEM relief valve is intended to be operated using the included metal rod, but it can be difficult to reach and hard to control when trying to slowly release pressure. This custom knob slips onto the valve, giving you improved leverage, smoother operation, and quicker access during use.

Perfect for shop presses, hydraulic setups, and garage workstations where precision pressure control matters.

Key Features:

✔️ Designed for Harbor Freight Bottle Jack Presses
✔️ Improves Relief Valve Control & Accessibility
✔️ Provides Better Grip & Torque Management
✔️ Quick Pressure Release Adjustments
✔️ Simple Install – No Permanent Modification Required
✔️ Made from Durable ABS Plastic

Material:
3D printed using ABS plastic, offering excellent durability, impact resistance, and heat tolerance for workshop environments.

Use Case:
Ideal for mechanics, fabricators, and DIYers using hydraulic shop presses who want smoother and more precise pressure relief control without fumbling with the factory rod.

Installation Notes:

Designed to fit over the factory relief valve
No drilling or modification required
Intended for manual hand operation

What’s Included:

1x Bottle Jack Relief Valve Knob

Why You’ll Love It:
No more awkwardly fighting the factory release setup. This knob makes operating your bottle jack press feel smoother, quicker, and far more controlled.