Description
USUN GBD40-OL Booster Pump by USUN
USUN GBD40-OL Booster Pump: The Blending Station Workhorse
Blending your own gas opens up a whole new level of diving, but you need the right tools to do it safely and efficiently. The USUN GBD40-OL Booster Pump acts as the heavy lifter for your fill station. Whether you are topping off oxygen for decompression bottles, mixing helium for deep exploration, or boosting argon, this unit handles the job with reliability. It is specifically designed as a Double Action booster, meaning it moves gas on both the push and the pull of the stroke. This efficiency makes it the perfect choice for filling large-volume cylinders like twinsets (doubles) or multiple stage bottles without spending all day at the blending stick.
Safety and Simplicity
Safety in the gas room is non-negotiable. Because this booster is air-driven, it requires no electrical connection, effectively removing heat, flame, or spark risks from the equation. It arrives oxygen cleaned, so you can start working with pure O2 right out of the box. The unit allows for infinitely variable cycling speed and output, giving you complete control over the fill process.
Built for the Long Haul
Maintenance shouldn't be a constant headache. USUN designed the seal system for a long working life without the need for airline lubrication. This keeps your gas path clean and reduces the time you spend tinkering with the pump. It handles continuous stop-and-start applications without any adverse effects, so you can pause to check your mix or swap tanks without worrying about the equipment.
Power and Pressure
This booster operates with a 40:1 pressure ratio. It requires a minimum inlet pressure of 25 bar (approx. 362 psi) and can deliver a maximum outlet pressure of 332 bar (approx. 4,815 psi).
Drive Gas Requirements
You can power this unit using compressed gas from scuba cylinders or a shop compressor. While the manufacturer recommends 28 cfm to run the booster at a rapid 60-70 cycles per minute, we find that speed excessive for safety-conscious blending. Many of our clients operate this booster successfully with compressors delivering 10 cfm to 14 cfm, resulting in a slower, more controlled fill rate that generates less heat. Note: We highly recommend plumbing a dryer and filter between your shop compressor and the booster to protect the drive mechanism.
Upgrade your fill station with a booster you can trust. Order the USUN GBD40-OL today!
Features
- Double Action Design: Moves gas on both strokes for faster filling of large cylinders like doubles and stages.
- Air-Driven Safety: Operates without electricity, eliminating risks associated with heat, flames, or sparks.
- Lubrication-Free: The seal system requires no airline lubrication, keeping the gas path clean and simplifying maintenance.
- Variable Speed: Allows the user to control the cycling speed and output for precise blending.
- Robust Construction: Designed to handle continuous stop/start applications without damage.
- Versatile Gas Compatibility: Suitable for boosting Oxygen, Helium, Air, Argon, and most other gases.
- Built-in Coupling: Most models feature an integrated coupling system for easier setup.
Specs
- Brand: USUN
- Model: GBD40-OL
- Type: Double Action Gas Booster
- Cleanliness: Oxygen Cleaned
- Dimensions: 22 x 9.4 x 9.4 inches (56cm x 24cm x 24cm)
- Pressure Ratio: 40:1
- Minimum Inlet Pressure: 25 bar (approx. 362 psi)
- Maximum Outlet Pressure: 332 bar (approx. 4,815 psi)
- Maximum Drive Gas Pressure: 8 bar (approx. 116 psi)
- Outlet Pressure Formula: 40PA+PI
- Piston Rod Diameter: 25mm (approx. 1 inch)
- Inlet Port Size: 1/4" NPT
- Outlet Port Size: 1/4" NPT
- Air Drive Port: G1/2"
Comparison Chart
Reviews
Product Q&A
Easy Returns
60-Day Hassle-Free Returns
Not the perfect fit? No problem. We offer a 100% credit or refund on any item returned within 60 days, as long as it's in new, unused condition with its original packaging. We want you to be happy with your gear, period.
Click here for more info100% Secure Shopping
Order With Confidence
Your security is our top priority. We use the latest encryption technology to ensure your personal information is 100% safe, so you can shop with total peace of mind. Not comfortable ordering online? Give us a call at (815) 267-8400 and we'll gladly help you over the phone.
Full Manufacturer's Warranty
Authorized Retailer for USUN
We are an Authorized Dealer for every single brand we sell. This means you are getting 100% authentic gear, and your purchase is fully protected by the manufacturer's warranty. No gray-market gear, no warranty worries. We've got your back.
Our Promise to You
We\’re Divers, Just Like You
Our promise is that you get the right gear, and that it's right the first time. As divers ourselves, we'll help you find the perfect fit for your style of diving. Then, we'll quality-inspect your order before it ships to ensure it's ready for your next adventure. We're your local dive shop, no matter where you are.
Proposition 65
Safe Water and Toxic Enforcement Act of 1986 – Warnings Required
WARNING: This Dive Right In Scuba product can expose you to certain chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov
We appreciate your decision to purchase Dive Right In Scuba products to provide the best in water experience. We take our job seriously! You may have noticed that our products now show a warning label at point of sale referring to carcinogens and birth defects. You may also have begun to see warnings related to carcinogenic substances or substances causing birth defects prominently displayed in hotel lobbies, hospitals, or other places of business recently. These warnings are required by the State of California, and we believe that an explanation of the California statute legislating the requirement will provide you valuable information regarding the relative risks of the chemicals that may be present in consumer products.
In 1986, the State of California passed the Safe Drinking Water and Toxic Enforcement Act; otherwise known as “Proposition 65” or "Prop 65". Prop 65 requires businesses like ours to disclose to individuals the presence of chemicals listed in the Act prior to point of sale. The regulations implementing this Act have been amended over time with the most recent updates will take effect on August 30, 2018. There are more than 900 chemicals on the Prop 65 Chemical List, including many chemicals that are found in components of a wide array of consumer goods or are used to manufacture components that make up consumer goods.
Prop 65 does not establish acceptable concentrations for any listed chemical; however, the agency which enforces it has established what is called "safe harbor" exposure levels for about one third of these chemicals below which warnings are not required. These "safe harbor" are established for listed carcinogens based on the quantity of the chemical that would result in one excess case of cancer in an exposed population of 100,000, assuming lifetime (70-year) exposure at the level in question. A similar process is used to establish safe harbor levels for listed reproductive toxicants. Additional information in plain language on safe harbor levels is available from the California Office of Environmental Health Hazard Assessment at http://oehha.ca.gov/Prop65/background/p65plain.html
At Dive Right In Scuba, the safety of your in water experience is our highest priority. We go to great effort to select materials that offer superior value, quality, and durability while also being generally recognized as safe and reliable for the full life of the product. Dive Right In Scuba also works closely with many regulatory bodies, such as the US Coast Guard and Underwriter’s Laboratories, to ensure the longevity of your on-water safety through targeted selection of durable, long lasting materials and components that undergo significant validation testing before being used to manufacture end items. Sometimes the safety promise we offer appears at odds with the health and safety requirements of other legislation in certain parts of the world when some regulations are updated ahead of others. To ensure compliance with applicable legal requirements, Dive Right In Scuba has placed a warning on products that contain a Prop 65 listed chemical, either directly or as a part of the raw material supply chain. This allows us to comply with California law and provide our California consumers with the disclosure required by Prop 65, while still promising the safest on water experience possible.
Dive Right In Scuba is working diligently with regulatory bodies and our own manufacturing partners to continue to continue to improve our product performance and reduce the presence of less desirable chemicals. Water is a precious resource we all share that is important to the health and well-being of our planet and all people. Our goal is to continue to enhance your water life experience while reducing our overall impact to the planet and, in particular, its waterways. While it is a bit of a juggling act to achieve, we are confident you will see continued improvement in both the immediate and long term future. We hope this explanation will enable you to understand why you will be seeing warnings on some our products.
Thank you for your continued use of Dive Right In Scuba products.