Product Review: T6500 Ultra-High-Pressure Gauge

The Ashcroft® T6500 Ultra-High-Pressure Gauge is used to measure pressure reliably in extreme pressure applications such as water blasting and water jetting systems.

In these environments, pressures can range from 40,000 psi for water blasting and as high as 100,000 psi for water jetting, often combined with high vibration and pulsation. These conditions make accurate pressure monitoring difficult and increase the risk of instrument failure.

If the wrong gauge is selected, systems can experience equipment damage, process disruption and potential safety risks to operators. This article explains what to look for when measuring pressure in ultra-high-pressure applications and how the T6500 Ultra-High-Pressure (UHP) Gauge is designed to help protect your instruments and your process.

How does the T6500 UHP withstand ultra-high pressure applications?

The T6500 combines a high-strength design with built-in safety features.

Designed for extreme pressure ranges

The T6500 UHP supports pressure ranges up to 100,000 psi, making it suitable for ultra-high-pressure systems like water jetting and industrial cleaning.

Built for mechanical strength and durability

Key construction features include:

• All-welded stainless-steel design for strength and leak integrity

• Inconel® 718 Bourdon tube for high-pressure resistance

• Safety glass window for added protection

• IP66 rating for dust and water ingress protection

These features help maintain measurement reliability in harsh and high-cycle environments.

Solid-front case with blowout protection

For systems that are susceptible to ultra-high pressure, there is a high risk of injury to the operator. With a solid-front case, the bourdon tube is positioned towards the rear of the case, separated by a solid internal wall. This design helps direct energy away from the operator in the event of a failure, improving safety in high-risk applications.

Figure 1: Solid-front gauge design

What are the T6500 ultra-high-pressure gauge specifications?

Where is the T6500 UHP used in industrial applications?

The T6500 UHP is used in applications where measuring pressure in extreme conditions is critical to system performance and safety.

Common applications include:

• Industrial water blasting and cleaning systems

• Water jet cutting for metal, concrete, glass and plastics

These environments often combine high pressure, vibration and exposure to harsh conditions, making proper gauge selection critical.

How does the T6500 UHP improve pressure measurement reliability?

The T6500 UHP improves pressure measurement reliability by stabilizing readings and maintaining accuracy under demanding conditions.

Vibration and pulsation dampening

Optional PLUS!™ Performance or liquid fill helps reduce pointer flutter caused by vibration and pulsation, improving readability and extending gauge life.

Flexible configuration options

• 100 mm and 160 mm dial sizes

• Multiple mounting configurations

• Dry, liquid-filled or dampened case options

This flexibility allows the instrument to be adapted to specific system requirements and installation constraints.

Consistent accuracy at high pressure

• 1% accuracy up to 60,000 psi

• 1.6% accuracy above 60,000 psi

What should you consider before selecting a gauge for UHP applications?

You should consider pressure range, safety design and the ability to handle dynamic conditions before selecting a gauge. Key considerations include:

• Maximum operating and spike pressure

• Frequency of pressure cycling

• Presence of vibration or pulsation

• Environmental exposure such as moisture or dust

• Required safety features like solid-front construction

Selecting a gauge designed specifically for extreme conditions helps protect your instruments, maintain measurement accuracy and reduce unplanned downtime.

Ready to learn more?

By understanding the challenges of UHP environments and selecting the right instrument, you can improve system reliability, protect your equipment and support safer operation. For additional information about pressure gauges, check out the related resources below, or contact us to speak to a product expert. 

In the meantime, download our guide to learn mistakes you can avoid when selecting your pressure gauge.