Why Aftermarket Pressure Gauges Are Not Recommended for Bottle Jack Rosin Presses

To Our Customers,

We value your trust and want to ensure you achieve the best results safely. Recently, some users and competitors have promoted retrofitting bottle jack presses (e.g., 4-ton, 6-ton) with aftermarket pressure gauges—including designs using flexible rubber tubing. We strongly advise against such modifications. Here’s why:

1. Technical Limitations of Bottle Jack Systems

• Non-Linear Pressure Mechanics
  Bottle jacks generate force via piston displacement, not direct linear pressure. Gauges (even with tubing) measure hydraulic chamber pressure, which does NOT equal the actual force applied to your rosin bags.
• Elastic Tubing Exacerbates Inaccuracy
  Rubber tubing expands under pressure, degrades with heat, and dampens hydraulic pulses. These factors distort readings, creating a false sense of precision.

2. Critical Safety Risks

• Hydraulic Leaks & Failure
  Drilling ports or adding fittings weakens the factory-sealed system. Rubber tubing connections are prone to ruptures, especially under cyclic loading, risking sudden oil leaks or jack collapse.
• Uncontrolled Force Spikes
  Misleading readings may lead to over-pressing, damaging materials or the press frame.

3. Why Competitor “Solutions” Fall Short

Claims that elastic tubing “solves” these issues are misleading:

• ❌ Tubing cannot compensate for inherent pressure non-linearity.
• ❌ Temporary fixes ignore long-term risks (e.g., tubing wear, fitting fatigue).
• ❌ No calibration for real-world variables (frame flex, material resistance, heat).

Our Recommendation: Precision Without Compromise

For reliable, repeatable results:
✅ Choose a dedicated rosin press with an integrated pressure transducer.
Our engineered systems:

• Measure true platen force (not chamber pressure).
• Use rigid, heat-resistant connections calibrated for accuracy.
• Include full warranty coverage and safety certifications.

Need Guidance?
Contact us for transparent advice or upgrade options. Let’s keep your operations safe and efficient.

How to Maximize Rosin Yield with a Bottle Jack Press (No Pressure Gauge Needed)

Sincerely,
DABPRESS