Need a reliable gauge for monitoring your tank liquid levels?
We understand how important it is to be able to monitor the liquid levels in your tanks. The last thing you want is to run out of water or fuel in the middle of a long journey. Faulty gauges can cause unnecessary delays and safety risks. That’s why you need a liquid level gauge you can rely on to avoid these issues.
The Seetru G31 Seeflex Gauge: for long-lasting and reliable performance
Our G31 Seeflex Gauge is an impeccable solution for a range of industries and liquid types due to its robust qualities. Giving it the ability to be used for monitoring flammable and non-flammable liquids in the most demanding environments.
Send Us Your Level Gauge EnquiryWhy Choose the G31 Seeflex Gauge?
Guaranteed Quality & Compliance
The G31 Seeflex Gauge meets the highest safety standards, with approvals from globally recognised authorities, including:
Designed for Safety and Ease of Use
The G31 Seeflex Gauge is easy to install and maintain. Its push-button isolation valve protects against external damage, keeping your tank’s contents secure
and ensuring reliable performance when you need it most.
Reliable Fuel Monitoring for Shipping and Beyond
The G31 Seeflex Gauge is suitable for monitoring a wide range of liquids, including: Diesel, Fuel oil, Aviation fuel, Lubrication Oil, Water, and Coolants.
Built for Precision and Durability
Customisable Lengths: Available up to 8,900 mm (8.9m) to suit your tank’s specifications, with Hydraulic Actuation, Toughened Reflex Glass, and optional Precision Scale Plate Graduation.
The Seetru G31 liquid level gauge
Measure with accuracy and reliability

Key Features of the G31 Seeflex Gauge
Push-Button Operation:
Isolates the gauge from the tank contents except when taking a reading. Press the button to open the spring-loaded valve and release it to reseal.Â
Safe from External Damage:
The design ensures that external damage to the gauge or fittings will not break the liquid seals. The fluid cannot escape.Â
Closed-Circuit Design:
The closed circuit design penetrates the tank wall at both top and bottom connections. The options for the top connection are either a push-button self-closing valve or valveless tank return.
Open-Circuit Design:
When the gauge extends above the tank by at least 100mm, it can feature an automatic safety vent valve or a pipe union connection.Â
Hydraulic Actuation:
Enables simultaneous operation of both push-button valves, ideal for tall tanks.Â
Precision Scale Graduation:
Engraved scale plates provide accurate measurements of tank storage volumes.Â
For more detailed specifications, visit the G31 Seeflex Gauge product page or view the datasheet.
FAQ: Question
- Is the G31 Seeflex an alternative to the ECON Tubular Level Gauge 1590?
- How does the G31 Seeflex Gauge compare to the Econ 1590?
- What is the maximum size of the Seeflex gauge?
- Does Seetru supply gauges in my country?
- How often does the Seeflex require maintenance?
- Do Seetru provide installation instructions for the Seeflex Gauge?
FAQ: Answer
- Yes, the Seetru Seeflex Level Gauge is a suitable alternative to the ECON Tubular Level Gauge 1590.
- The G31 Seeflex Gauge is a reliable alternative to the ECON 1590. One key difference is that the ECON 1590 had a side-mounted option, whereas the G31 is designed for rear/straight mounting. Additionally, standard lengths may differ slightly. If you need guidance on sizing or selecting the right gauge for your requirements, our team is happy to help. Please feel free to contact us for technical assistance.
- The maximum size / length of the Seeflex gauge is 8900mm (just over 29 feet).
- Seetru has a global distributor network of reliable partners, you can locate your nearest available contact here.
- The Seeflex gauge is designed to be low-maintenance. Typically the only maintenance you’ll need to carry out is replacing the valve seals, but generally these seals have a long performance life.
- Yes, Seetru provides clear and concise Installation and operating instructions for all of our level gauges.
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