FEP Bladders and Diaphragms for containment of Space Propellants

Holscot are World leaders in the development of FEP Tanks and Diaphragms for Liquid Containment and Expulsion. Our exclusive Fluoropolymer processing experience facilitates innovative constructions with proven use in space.

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Bladders & Diaphragms

Holscot manufactures high-performance fluoropolymer bladders and diaphragms designed for demanding containment, separation, and pressure management applications. Produced from FEP (or PFA), these components combine excellent chemical resistance with flexibility, purity, and long service life.

We support a wide range of industries including aerospace, chemical processing, energy, and advanced engineering, where reliability and material performance are critical.

 

Designed Around Your Application

Bladders and diaphragms are rarely standard components. Each application brings its own combination of media, pressure, temperature, and mechanical constraints.

We work closely with customers to develop solutions that meet these conditions, including:

  • Custom sizes and geometries – from small precision components to large-format containment
  • Material selection guidance – FEP or PFA depending on chemical exposure, permeability, and temperature
  • Wall thickness optimisation – balancing flexibility, strength, and service life
  • Welded constructions – enabling complex shapes and larger diameters beyond extrusion limits

Our in-house forming and welding techniques allow us to produce seamless or near-seamless structures with consistent performance across the component.

 

Performance Where It Matters

Fluoropolymer bladders and diaphragms are chosen where conventional elastomers or plastics fall short. Key advantages include:

  • Outstanding chemical resistance across aggressive media
  • Low permeability and high purity, suitable for sensitive environments
  • Wide temperature capability
  • Excellent non-stick properties, reducing fouling and contamination
  • Proven durability under repeated flexing and pressure cycling

This makes them well suited to applications such as:

  • Fluid separation and containment
  • Dosing and transfer systems
  • High-purity or corrosive chemical environments
  • Aerospace and defence fluid management systems

 

Integration with Containment Systems

While Holscot does not manufacture full tank systems, our bladders and diaphragms are routinely integrated into complete containment assemblies through established partners.

We can support projects by:

  • Supplying precision-engineered bladder or diaphragm components ready for integration
  • Collaborating with your chosen system supplier or introducing trusted partners where required
  • Advising on interface design, tolerances, and material compatibility

This approach ensures you receive a complete, functional solution without compromising on material performance or component quality.

 

Straightforward to Specify, Reliable to Supply

From early-stage design through to production, we focus on making the process clear and efficient. Whether you have a defined drawing or an initial concept, we can help progress your requirement quickly.

If you are developing a new system or reviewing an existing design, we would be pleased to discuss how fluoropolymer bladders or diaphragms could improve performance and reliability.

 

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