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Metalsub Second Stage Adjustment Tool

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9 Reviews

11 Questions

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Features of Metalsub Second Stage Adjustment Tool

Product description of Metalsub Second Stage Adjustment Tool

Description summary

Achieve peak performance and breathing comfort with the METALSUB Second Stage Adjustment Tool. Designed for technicians, this essential device uses a precision pressure gauge to accurately set the inhalation effort of any regulator second stage. Eliminate guesswork and fine-tune equipment for optimal airflow, reduced fatigue, and enhanced diver safety. Its ergonomic design and clear analog dial make professional-grade servicing efficient and reliable, ensuring every regulator performs flawlessly. Regulators - Accessories

Regulators - Accessories.

METALSUB Second Stage Adjustment Tool.

Tool with precision pressure gauge for adjusting the second stage of the regulator.

Achieve peak performance and breathing comfort from your scuba regulator with the METALSUB Second Stage Adjustment Tool. This essential piece of service equipment is designed for dive technicians and certified professionals to precisely set the inhalation effort, or "cracking pressure," of a regulator´s second stage. Proper adjustment is critical not only for a smooth, natural breathing experience but also for ensuring your life support equipment functions reliably and within the manufacturer´s specifications on every dive.

By using this tool, you can eliminate the guesswork associated with regulator servicing. Fine-tune your equipment to deliver optimal airflow with minimal effort, reducing fatigue and air consumption on long or deep dives. Ensure that every regulator you service leaves the workshop performing at its best, providing divers with the confidence and safety they need underwater. This tool is indispensable for annual servicing, performance tuning, and post-repair verification, allowing you to restore any second stage to factory-perfect condition or customize it to a diver´s specific breathing preference.

At the heart of this device is a high-precision, easy-to-read pressure gauge that provides accurate intermediate pressure readings. This allows for meticulous adjustments to the second stage´s internal mechanism. The tool features an ergonomic design for a secure grip and straightforward operation, making the adjustment process efficient and repeatable. It connects seamlessly to the standard low-pressure inflator hose, allowing you to measure and set the crucial inhalation pressure with unparalleled accuracy.

Manometers

The integrated manometer is the core component of this adjustment tool. It is specifically calibrated to measure the low-pressure range relevant to a regulator´s second stage function. This sensitive gauge provides a clear, visual indication of the "cracking effort"—the negative pressure required to initiate airflow—allowing for adjustments to be made with confidence and to exact standards. The clear dial ensures that even minute changes are visible, guaranteeing a professional-grade service.

Technical Specifications

Product Type: Second Stage Regulator Adjustment Tool

Primary Function: Measurement and adjustment of inhalation effort (cracking pressure)

Pressure Gauge Range: Calibrated for low-pressure diagnostics and intermediate pressure checks

Connection: Standard low-pressure regulator hose fitting

Compatibility: Designed for use with a wide range of scuba regulator second stages

Readout: Analog dial for immediate, clear pressure indication

Specifications

Manual

Technical specifications of Metalsub Second Stage Adjustment Tool

Features of Metalsub Second Stage Adjustment Tool

Color Black

Color

Black

Silver

Product Type Manometers

Product Type

Manometers

Key differentiators

Connects to a standard low-pressure regulator hose fitting for wide usability.

Equipped with a clear analog dial for immediate and easy-to-read pressure indication.

Features an integrated manometer calibrated for low-pressure diagnostics and intermediate pressure checks.

Precisely measures and adjusts the inhalation effort (cracking pressure) of a regulator's second stage.

Technology in Metalsub Second Stage Adjustment Tool

Energy rating

Warnings

5 / 5

9 Reviews

What our customers are saying about Metalsub Second Stage Adjustment Tool

This scuba regulator IP gauge offers excellent performance and quality. Its robust, solid, and accurate design makes it a valuable tool for adjusting first and second stages on regulators like Scubapro, Aqualung, and Apeks. While precise measurements are noted, some buyers suggest the manometer´s aesthetic could be improved. It´s a highly recommended diving tool

Good product

2026/09/08

Javier

Good tool for adjusting the first and second stage, but be careful with the tool´s terminal; it is not suitable for all second-stage models. In my case, with Mares, it uses a 5mm hexagonal stem. I solved it by printing an adapter for the piece, and it works perfectly

Good and solid

2025/08/28

Max

Good quality. Works as it should. Robust, solid and accurate. Have used it at scubapro

Excellent quality

2025/07/17

Pieter

Excellent product at good price. Excellent fast service ! Thank you!

Fast delivery and good product

2024/09/27

DAvid

Super fast delivery to the Canary Islands Good quality product Thank you

Use on scubapro regulator

2023/08/15

kevin

hello great product that I use on my aqualung and scubapro regulators is not suitable for Mares regulators

Util

2023/07/13

Jose Luis

Good tool to adjust the 1st and 2nd stages of the regulator.

Very good and accurate tool

2022/10/25

Gachoud Philippe

Great tool, works great. Compared to other IP gauges we are fine. What a pity that the manometer is not a little prettier, perhaps paying a little more for it could be of better quality. In terms of measurements and precision nothing to say.

Good tester

2022/10/25

Jerôme

This allows you to adjust your controls for diving. Good default. Can be further recommended. :-)

good for apeks

2022/08/19

Hongmou

I use it to adjust my apeks xtx50, works fine

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Include AI Generated questions and answers

2026-09-14

Generated by AI and verified

Who is this adjustment tool intended for?

Answer of Generated by AI and verified

The METALSUB Second Stage Adjustment Tool is designed for dive technicians and certified professionals to service and fine-tune scuba regulators. It allows for precise adjustments to ensure equipment functions reliably and within manufacturer specifications.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

What is the primary function of this Metalsub tool?

Answer of Generated by AI and verified

This tool's primary function is to measure and adjust the inhalation effort, also known as "cracking pressure," of a regulator's second stage. This ensures optimal airflow and a smooth, natural breathing experience for the diver.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

Is this tool easy to use for precise adjustments?

Answer of Generated by AI and verified

Yes, the tool is designed for user-friendly adjustments. It features an ergonomic design and a clear, analog dial that provides an immediate pressure indication, making professional-grade servicing efficient and reliable.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

What kind of pressure gauge does this tool use?

Answer of Generated by AI and verified

This tool features an integrated manometer with an analog dial. It is calibrated to measure the low-pressure range relevant to a regulator's second stage function, allowing for precise diagnostics and intermediate pressure checks.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

What type of connection does this tool use?

Answer of Generated by AI and verified

This adjustment tool is designed to connect to a standard low-pressure regulator hose fitting.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

What are the benefits of using this tool for regulator maintenance?

Answer of Generated by AI and verified

Using this tool eliminates guesswork in regulator servicing. It allows a technician to fine-tune the equipment for optimal airflow, which can help reduce diver fatigue and air consumption. This ensures the regulator performs at its best, enhancing diver safety and confidence.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

Can I use this tool to service my own regulator at home?

Answer of Generated by AI and verified

We recommend that this tool be used by dive technicians and certified professionals. Proper regulator adjustment is critical for life support equipment, and incorrect servicing can pose a significant safety risk. Servicing should be performed by individuals with the appropriate training and experience.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

Is this tool compatible with all regulator brands?

Answer of Generated by AI and verified

This tool is described as working with Aqualung, Scubapro, and Apeks regulators. However, it is noted as not being suitable for Mares models. We recommend verifying compatibility with your specific regulator model before use.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

How does this adjustment tool differ from a complete regulator set like the Scubapro Kids Mk2?

Answer of Generated by AI and verified

The METALSUB Second Stage Adjustment Tool is a specialized piece of service equipment for technicians to maintain regulators. In contrast, the Scubapro Kids Mk2 Evo Int232/r105 Diving Regulator Set is a complete breathing apparatus for diving. Our tool is used to service regulators like the Scubapro set, not as a substitute for one.

* Generated by AI based on customer and product data

2022-06-26

Tolga Mark Tuncay

Hello, for which 2nd stages is the tool suitable? Does it fit Apeks ESCs like the ATX series? Regards

Answer of esben

It fits nicely on the apex. Use it myself on my own Apeks regulator

Answer of Danilo

I would say no, this is to work on a seat with a “wide screwdriver”, while for the Apex it needs the version to work on a seat with a 5mm hex wrench.

* Generated by AI based on customer and product data

2022-08-24

Juan

Good afternoon, Know if it is compatible with Allen and flat type. Regards, John

Answer of Joris

Hello, only Flat type. Sincerely, J.

Answer of Luigi

I do not understand the question ...!!! But I can say that it is compatible with the second stages of the Cressi type (blades that coincide with the adjustment bolt) ...... no Mares

* Generated by AI based on customer and product data

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Frequently bought together

Best sellers

Use cases

Regulator Servicing by Certified Technicians 95% Fit

This tool is specifically designed for the precise measurement and adjustment of a regulator's second stage inhalation effort, a critical task during professional servicing to ensure safety and performance.

second_stage_adjustments,manometer_type,pressure_gauge_range

Dive Shop and Repair Center Operations 90% Fit

Essential for any dive shop's repair bench, this tool allows technicians to perform diagnostics and fine-tune customer regulators to manufacturer specifications, ensuring reliable air delivery and customer satisfaction.

pressure_gauge_range,readout,connection

Pre-Dive Regulator Performance Checks 75% Fit

For experienced divers or divemasters who are certified to perform their own equipment checks, this tool allows for a quick verification of the second stage's cracking pressure before a dive trip, enhancing safety and peace of mind.

readout,connection,second_stage_adjustments

Training for Scuba Equipment Technicians 80% Fit

This tool is ideal for use in educational settings where aspiring scuba technicians learn the fundamentals of regulator maintenance. Its clear analog display and specific function help demonstrate the principles of inhalation effort adjustment.

second_stage_adjustments,readout,manometer_type

Best for

Essential for DIY Regulator Maintenance

This tool allows for precise at-home adjustment of your regulator's second stage, helping you maintain performance and potentially save on service costs.

Second stage adjustments: Measurement and adjustment of inhalation effort (cracking pressure)

Great for Ensuring Reliable Performance

Perfect for ensuring your gear is dialed in for optimal breathing efficiency and security before your dives, giving you peace of mind on the water.

Ideal for Aspiring Dive Technicians

This tool enables the precise measurement and adjustment of inhalation effort, a key skill for those learning to service and fine-tune high-performance dive equipment.

Readout: Analog dial for immediate, clear pressure indication

Benefits

FunctionalOptimize Your Regulator's Performance

This tool allows for the precise measurement and adjustment of your second stage regulator's inhalation effort, also known as cracking pressure. This ensures your equipment is tuned to exact specifications for optimal breathing performance during dives.

Product type: Second Stage Regulator Adjustment Tool

FunctionalService Your Gear for Reliable Dives

Properly servicing your regulator is crucial for dive safety. This tool enables detailed low-pressure diagnostics and intermediate pressure checks, giving you confidence that your life-support equipment is functioning correctly and reliably underwater.

Pressure gauge range: Calibrated for low-pressure diagnostics and intermediate pressure checks

Manometer type: Integrated manometer calibrated to measure low-pressure range relevant to regulator's second stage function

FunctionalGet Clear, Immediate Readings

Designed for efficiency, this tool features an analog dial that provides an immediate and clear pressure indication. This straightforward readout simplifies the adjustment process, allowing for quick and accurate servicing without complex digital menus.

Readout: Analog dial for immediate

clear pressure indication

FunctionalConnects to Standard Dive Gear

Featuring a standard low-pressure regulator hose fitting, this adjustment tool is designed to connect easily with common diving equipment. This ensures wide compatibility for servicing a variety of second stage regulators.

Connection: Standard low-pressure regulator hose fitting

Ideal buyer profiles

The Dive Equipment Technician

This individual is a certified professional responsible for servicing, repairing, and maintaining scuba diving regulators. They require precise, reliable tools to ensure equipment functions according to manufacturer specifications, prioritizing accuracy and safety for their clients.

This tool is specifically designed for measuring and adjusting the inhalation effort (cracking pressure) of a regulator's second stage. Its integrated manometer and analog dial provide the clear, immediate feedback needed for accurate low-pressure diagnostics, ensuring every regulator is serviced to the highest safety and performance standards.

The Independent Dive Professional

This buyer is a divemaster or instructor who manages their own gear or that of a small group. They have the technical training to perform their own regulator maintenance and value the ability to fine-tune their equipment for optimal breathing performance and reliability.

For the trained professional, this tool allows for precise control over their breathing apparatus. It enables them to adjust the second stage for optimal breathing efficiency and ensure their air supply is reliable, enhancing their security and confidence on every dive without relying on a third-party service center for routine tuning.

The Technical Diving Adventurer

Engaged in advanced forms of diving, this user understands the critical importance of perfectly tuned equipment. They are often certified to service their own gear and need professional-grade tools to maintain their complex regulator setups for demanding dives.

This adjustment tool provides the precision required for technical diving rigs. It allows the diver to fine-tune the second stage for minimal breathing effort, which is crucial for conserving gas and reducing fatigue on long or deep dives, directly contributing to mission safety and success.

Competitive features

When evaluating the Metalsub Second Stage Adjustment Tool against other products in the diving regulator category, it's crucial to understand their distinct purposes. The Metalsub tool is a specialized maintenance device designed for technicians to precisely adjust the inhalation effort of a regulator's second stage. In contrast, the Metalsub Thunder, Beuchat 1dive, and Seac Px100 are complete regulator sets intended for divers to use for breathing underwater. Therefore, this is not a comparison of like-for-like products, but rather a look at a specialized tool versus the equipment it services.

Where it excels

The Metalsub Second Stage Adjustment Tool excels in its singular, specialized function: providing a precise, reliable method for fine-tuning the performance of a regulator's second stage. It is an essential tool for dive technicians or dedicated divers who perform their own equipment maintenance, allowing for accurate setting of inhalation pressure to enhance safety and breathing comfort. The tool offers compatibility with several major regulator brands, including Aqualung, Scubapro, and Apeks, making it a versatile addition to a service kit.

Consider alternatives if...

If you are a diver looking for equipment to breathe with underwater, this tool is not a suitable choice. You should consider a complete regulator set like the Metalsub Thunder, Beuchat 1dive, or Seac Px100. This product is not a regulator and cannot be used for diving. It is exclusively a maintenance and adjustment tool.

Verdict

The Metalsub Second Stage Adjustment Tool is not a diving regulator but a high-quality, precise instrument for servicing them. It is designed for dive technicians and serious users who need to accurately set the intermediate pressure and inhalation effort of second stages. It is incompatible with Mares regulators. For divers seeking a complete breathing apparatus, a full regulator set from brands like Beuchat, Seac, or Metalsub's own Thunder series would be the appropriate choice.

Specs comparison

	Metalsub Second Stage Adjustment Tool

Specs vs competitors

	Metalsub Second Stage Adjustment Tool	Dive Rite 1 2 Oxygen Diving Regulator Set	Scubapro Kids Mk2 Evo Int232/r105 Diving Regulator Set	Mares Dual 15x Int Diving Regulator Set
Connection	Standard low-pressure regulator hose fitting	DIN	Int232	INT/Yoke
Second Stage Adjustments	Measurement and adjustment of inhalation effort (cracking pressure)	-	-	Easy-Grip Design