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Hydraulic Connection Package (1/8″)

AP-HP-01-001

945.00 €

This package contains all tubing, fittings, and tools required to complete the fluidic connections for a flow battery or electrolyser setup with 1/8″ tubing. Includes the Lid Pack for complete GL45 bottle connectivity.

Highlights:

Package for 1/8″ tubing
PTFE hard tubing and peristaltic pump tubing included
Nut-and-ferrule compression fitting system for reliable, leak-free seals
PEEK unions for rigid tube-to-tube connections
Barbed fittings to bridge hard PTFE tubing and flexible peristaltic tubing
Y-piece connector for sampling or venting
Tube cutter and tube clamps included for clean, secure installation
Syringe for easy filling and sampling
GL45 4-port lids with gaskets and blind plugs included

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About the product

This package contains all parts necessary for completing a full setup with 1/8″ tubing (either Redox Flow Battery or Electrolyser).
1/4″ package (intended for stacks) is also available.

The Connection Pack includes everything needed to plumb a complete 1/8″ flow battery or electrolyser system, including the Lid Pack for connecting directly to GL45 bottles. Bottles are available in either Pyrex glass or Polypropylene.

Fluidic sealing is based on a flangeless nut-and-ferrule compression system (1/8″ nuts with yellow ferrules), which provides reliable, reusable seals on PTFE hard tubing. PEEK unions connect lengths of hard tubing rigidly throughout the circuit. At the pump interface, barbed fittings bridge the hard PTFE process tubing to the flexible peristaltic pump tubing. A Y-piece female connector enables convenient sampling or pressure relief points. Tube clamps allow flow to be stopped at any point without disconnecting tubing, and the included red tube cutter ensures clean, square cuts for consistent sealing.

The bundled Lid Pack provides two GL45 4-port lids with gaskets for a tight, leak-free seal on standard GL45 bottles, plus blind plugs for any unused ports.

For most applications we recommend Pyrex glass bottles. However strong alkaline solutions at elevated temperatures can slowly corrode glass and redeposit on electrodes and potentially change the catalytic properties of the electrodes. For this reason we recommend to use PP bottles in (strong) alkaline solutions.

Connection Pack components:

PTFE Hard Tubing (1 meter) – 8 units – (tube-size: 1/8″ ID, 1.6 mm)
Peristaltic Tubing (1 meter) – 2 units – (peristaltic-tube-size: 1/8″, #14)
PEEK Union – 8 units – (Tubing OD: 1/8″)
Barbed Fitting – 8 units – (For 1.6–2.4 mm ID tube)
Nut, flangeless 1/8″ – 11 units
Yellow ferrule 1/8″ – 26 units
Y-piece, Female connector – 1 unit
Tube clamp – 2 units
Tube Cutter Red – 1 unit
Syringe – 1 unit
Bottles – 2 units – Pyrex glass (150mL) or Polypropylene (250mL, 500mL, 1000mL)

Lid Pack components:

GL45 Lid with 4-port element – 2 units
GL45 Lid Gasket – 2 units
Blind Plug – 4 units
Nut, flangeless 1/8″ – 8 units
Yellow ferrule 1/8″ – 12 units

Assembly Video

Suggested setups:

Standard, two channels, two bottles (Redox Flow Battery or Electrolyser)
Two channels, one bottle (Electrolyser)
Two channels, one bottle with gas separation (Electrolyser)
One channel, one bottle with gas separation (Electrolyser)

A two-channel peristaltic pump recirculates from each of the two bottles/reservoirs through the two respective sides of the flow cell.
The four ports of each lid are available for:
- Inlet
- Outlet
- Gas ventilation
- Hydraulic shunt, connecting the two reservoirs. This shunt is enabled by the syringe connected to both bottles through the tee fitting.
  - For vanadium flow battery chemistries/membranes there is a large volumetric cross-over through the membrane (depending on the membrane). This results in a very large volume difference between the two sides – ultimately this will lead to a battery failure over time. The hydraulic shunt enables this volume difference to level out and maintain the battery integrity (at the cost of a lower faradaic efficiency, that can be minimised by longer tube lengths)
  - For electrolysers it can level out volume difference when using porous separators. The volume change comes from small pressure differences between the two sides inside the cell that leads to a high cross-over because of the porosity of the separator.

A two-channel peristaltic pump recirculates from the same bottle/reservoir through the two respective sides of the flow cell.
The four ports of the lid are available for:
- Inlet
- Outlet flow cell cathode side
- Outlet flow cell anode side
- Gas ventilation

A one-channel peristaltic pump recirculates from the same bottle/reservoir through the two respective sides of the flow cell and then through a gas separator before returning to the bottle/reservoir.
The four ports of the lid are available for:
- Inlet
- Outlet
- Plugged (Blind Stopper)
- Plugged (Blind Stopper)
Gas separation unit is sold separately

A two-channel peristaltic pump recirculates from the same bottle/reservoir through the two respective sides of the flow cell and then through a gas separator before returning to the bottle/reservoir.
The four ports of the lid are available for:
- Inlet flow cell cathode side
- Outlet flow cell cathode side
- Inlet flow cell anode side
- Outlet flow cell anode side
Gas separation unit is sold separately

IMPORTANT NOTE ABOUT GOOD SAFETY PRACTICE WHEN OPERATING ELECTROLYSERS THAT GENERATE H2 AND O2: No matter if two separation units or bottles are used for separating out H2 and O2 on each side, there will always be a transfer of gases from one side to the other (either through solubility in water if the water from both sides is mixed at some point or by cross-over through the membrane/separator). This has the consequence that the head space in bottles with time can become a mix of both H2 and O2 that can reach explosive limits. For this reason it is strongly recommend to:

Keep the head-space in bottles as low as possible – if an explosion occurs the gas volume is as small as possible
Ensure proper ventilation and suction from gas separation units/bottles
Keep setup in enclosures to prevent personal injuries if either a tube burst or an explosion happens – HOWEVER IT IS STRICTLY NEEDED TO HAVE VENTILATION IN THE ENCLOSURE TO AVOID BUILD-UP OF EXPLOSIVE GAS CONCENTRATIONS
ALWAYS make an independent safety assessment of the experimental setup – Recommendations includes
- Always to follow your own guide lines for safety
- Always to follow ATEX rules/guidelines
- Assessment of the amount of gas produced
- Risks for reaching explosive gas limits
- Always assume that all fittings/bottles etc are not gas tight
- Measures to prevent/remove personal injuries if worst case scenario happens

Support & Inquiry

Do you have specific questions or would you like help in selection and configuration of our product:

Hydraulic Connection Package (1/8″)

You are very welcome to contact us in the form here. We are ready to support you in selecting the best solutions for your R&D.

Always include as much information as you can about your project, what type of chemistry you are planning to use, what is the purpose of the equipment you are interested in. That will make it much easier for us to guide you towards the best solution for your project.