
Aluminum CO₂ Fire Extinguisher Cylinder
| Specially designed for fire‑equipment factories, fire engineering contractors and property groups
Provide reliable and lightweight high-pressure fire suppression storage solutions for fire equipment manufacturers, fire engineering contractors, commercial property groups and global fire safety distributors. Solve the problems you face in scenarios such as finished extinguisher assembly, commercial building fire matching and multi-batch project procurement where safe and compliant fire cylinder supply is critical. Holding ISO 7866 and DOT-3AL international certifications, it supports bulk purchasing and OEM customization of cylinder coating colors, enterprise institutional logos and exclusive export packaging.
Safety and Compliance
Each gas cylinder undergoes 100% water pressure testing, ultrasonic flaw detection and air tightness testing, and is accompanied by a traceable third-party certification report to ensure absolute safety.
Lightweight design
Compared with traditional gas cylinders, the weight is reduced by 30% to 40%, significantly lowering logistics costs and the operational load on workers.
Deep customization service
Supports OEM/ODM based on your filling gas, production line interface, and brand logo, including all-round customization in color, valves, size and packaging.
One-stop support
We offer full-cycle services ranging from technical selection consultation, compliance guidance to after-sales maintenance. Our professional engineering team is your strong backing.
| Drawing No. | Outside Diameter | Water Capacity | Length | Weight | Service Pressure | Test Pressure | Specification | ||||
| mm | in | liters | lbs | mm | in | kgs | lbs | ||||
| MS-140-245-H-01 (4.35~7.6)L |
140 | 5.51 | 4 | 8.82 | 410 | 16.14 | 4 | 8.82 | 169.3/2455 | 245/3553 | PED |
| 5.25 | 11.57 | 510 | 20.08 | 4.8 | 10.58 | ||||||
| 8.4 | 18.52 | 765 | 30.12 | 6.8 | 14.99 | ||||||
| MS-140-250-H-02 (4.1~8.5)L |
4.1 | 9.04 | 420 | 16.54 | 4.1 | 9.04 | 174/2523 | 250/3625 | |||
| 5.3 | 11.68 | 515 | 20.28 | 4.9 | 10.8 | ||||||
| 8.5 | 18.74 | 770 | 30.31 | 6.9 | 15.21 | ||||||
| MS-175-207-H-01 | 175 | 6.89 | 6.7 | 14.77 | 422.3 | 16.63 | 6 | 13.23 | 124/1800 | 207/3000 | DOT-3AL |
OEM/ODM customization capability - integrating products into your brand and system
Our customized services cover four major dimensions
• Customized specifications: Volume, diameter, height, valve opening type - within the safety standard range, adjust as needed
• Customized appearance: Bottle body color, shoulder color matching, enterprise LOGO, product label - Let the gas cylinder become your mobile billboard
• Customized identification: Laser engraving, screen printing, permanent coding - achieving full life cycle traceability management
• Customized packaging: Exclusive packaging solutions, pallet specifications, and shipping mark designs - tailored to your warehousing and logistics systems
From sample confirmation to batch delivery, we offer one-on-one dedicated account manager coordination to ensure that every customized detail is precisely implemented.



Scene One: Fire Equipment Manufacturing Factories
Traditional steel fire extinguisher tanks are heavy and prone to internal rust corrosion. Rust contaminants block valve pipelines and lead to frequent product failure after finished assembly. Heavy steel bodies raise packaging, transportation and manual handling costs on production lines. Mixed non-standard tank sizes bring messy stock management for mass assembly lines, and generic blank cylinders cannot support factory private label differentiation. Midstar aviation-grade aluminum CO₂ cylinder cuts weight by 30% for streamlined assembly workflow, reducing labor and logistics costs for mass production. Smooth anti-corrosion inner wall eliminates rust blockage risks, lowering finished product after-sales failure rate drastically. Unified standard dimensions simplify batch production scheduling and warehouse inventory control. Custom color painting and laser brand logos help fire equipment factories launch exclusive branded extinguisher product lines.
Scene Two: Fire Engineering Contractors & Commercial Property Groups
Low-quality uncertified extinguisher vessels lack complete international certification documents, which fail inspection for commercial malls, office buildings, hotels and industrial park fire safety acceptance. Heavy steel tanks increase labor burden for regular fire equipment inspection, replacement and wall-mounted layout installation. Without unified customized identification, property management teams struggle to count and track thousands of fire extinguishers across multi-building campuses. Our aluminum CO₂ fire cylinder fully complies with ISO 7866 and DOT-3AL global standards with full official certification paperwork to pass domestic and overseas fire safety audits. Lightweight design eases routine maintenance and replacement work for fire service staff. Custom permanent engraved codes realize full asset traceability for large property fleets, while stable bulk full-container supply meets the large-scale procurement demand of fire engineering projects.
Scene Three: Cross-Border Fire Safety Wholesale Distributors
Scattered small-volume retail orders squeeze profit margins of fire equipment suppliers. Cheap unbranded steel cylinders trigger frequent customer complaints about gas leakage and short service life. Incomplete certification materials cause customs detention and cargo return losses during export shipment. Single generic appearance cannot help distributors form competitive exclusive product series for overseas B-end clients. Midstar aluminum CO₂ extinguisher cylinder adopts leak-proof precision forming technology to minimize after-sales service workload. We provide full one-stop OEM customization including tank body colors, enterprise logos, matched valve assemblies and dedicated export carton & pallet packaging. Stable mass production and global sea logistics allow distributors to focus on large bulk orders from overseas fire apparatus dealers, chain property groups and engineering contractors instead of fragmented individual small orders.


Full-process support from concept to mass production: From drawing review, prototype making to mass production and quality inspection, we offer one-stop services, significantly shortening your product launch cycle.
Flexible cooperation based on demand: Whether it's a small-batch trial order or a long-term large-scale framework purchase, we can offer competitive tiered pricing and stable inventory planning.
Cross-industry application expert: Our gas cylinder solutions have been successfully applied in fire-fighting equipment, medical devices, diving equipment and the beverage industry. We are glad to apply our cross-industry experience to solve your specific challenges.


Regarding packaging
In order to deliver our products to you in the condition in which they were sent, we use strict, strong, efficient and environmentally friendly packaging methods.
Our standard packaging method for our products is to cover them with plastic bags, put them into cartons, then place the cartons on pallets and wrap them tightly with stretch film to ensure that the cylinders do not collide with each other during transportation. Other packaging methods can be provided upon request.

Certification system of Midstar
• U.S. market: DOT-3AL (U.S. Department of Transportation Standard for Aluminum Alloy Gas Cylinders)
• EU market: TPED /EU + PED /EU (Dual Directive compliance)
• International standard: ISO 7866 (Global Technical Benchmark for Gas Cylinder Industry)
• UK market: BS 5045-8 (UK National Standard)
• Chinese market: GB/T 11640 (National Recommended Standard of China)
All certifications are reviewed and issued by international authoritative institutions to ensure the authenticity and traceability of compliance documents.

Professional service commitment
We offer comprehensive support, not just products.
Bulk purchasing plan: Based on your annual purchasing volume, we offer tiered preferential prices and flexible delivery plans.
Customized services: Supports institutional customization of gas cylinder colors and markings, facilitating asset identification and management.
Training and Guidance: Provide training on product usage and safety regulations for your team.
After-sales service and Inspection: We offer regular safety inspection services for gas cylinders or assist in contacting qualified local inspection institutions.


Call to action
To the Procurement Managers of Institutions, if you are evaluating or updating equipment, we can provide you with:
Free sample experience: Test the lightness and reliability of the product in person.
Contact our B2B sales team immediately to get a personalized quotation and solution.

FAQs
Q1: Are there any special requirements when servicing?
A: A MID-STAR service providers's trained engineer would service a MID-STAR extinguisher in the same way they would any other extinguisher; the extinguisher vessel and its components are broadly the same as others. However, the MID-STAR solution inside is totally different.
Q: How many fire extinguishers do i need in my business premises?
A: In this case, we must speak of a workplace, rather than a local. The regulations establish that the minimum number of fire extinguishers must be determined by dividing the surface to be protected by the maximum surface that the fire extinguisher in question can cover (remember that there are different types of fire extinguishers depending on which areas).
Q1: I have a powder fire extinguisher currently, is this enough?
A: Please contact one of our service providers for advice and they will carry out a fire risk assessment.
The use of powder extinguishers indoors can result in a sudden reduction of visibility causing disorientation jeopardizing escape, and can be harmful if inhaled. For this reason, powder extinguishers should generally not be specified for use indoors unless mitigated by a health and safety risk assessment.












