Flat and domed
Simple diaphragms for sensors and valves.
Valves and diaphragms · Diaphragms
Diaphragms.
A diaphragm flexes thousands or millions of times. Its life depends on material, section and how evenly it was moulded.
The detail
Designed to flex
Diaphragms fail at points of stress concentration: thin spots, knit lines and sharp transitions. Even wall sections and well-placed gates matter more than almost anything else.
Small diaphragms usually run in LSR; larger and reinforced diaphragms often run in compression moulding with a fabric layer moulded in.
Where it fits
Diaphragm types
Convoluted
Rolling diaphragms for longer stroke.
Fabric-reinforced
Reinforced diaphragms for higher pressures.
How we run it
How we make them
Stress review
Section and geometry checked for even flexing.
Process choice
LSR or compression, with reinforcement if needed.
Moulding
Gates and vents placed to avoid weak points.
Testing
Flex or pressure checks agreed with you.
To quote it
To quote it
Diaphragm drawing
Or a sample.
Pressure and stroke
Operating conditions.
Media
What it's in contact with.
Life requirement
Expected cycles.
At a glance
The idea in a picture.
From drawing to delivered parts
- 01Drawing or sampleYour part and where it is used
- 02Material and routeCompound and process agreed
- 03PrototypeReal parts to test
- 04Sign-offYou approve the samples
- 05Production toolBuilt for your volumes
- 06Batches and checksInspected and delivered
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Questions
What people usually ask.
Can you mould fabric-reinforced diaphragms?
Yes, by compression moulding with a fabric layer. See our industrial diaphragm project.
How do you test diaphragm life?
We can run agreed flex checks, or supply samples for your own life testing.
Keep exploring
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Back to the overviewDesigned and developed in the UK. UK moulding capability, with some higher-volume production placed with trusted partners where that's the right commercial answer.
Get in touch
Tell us the part, the volume, and the timeline.
Rough annual volume, target unit price, and any deadlines. That's enough to work out whether compression, LSR injection or something else is the right tool.
Real people, a real workshop
You deal with the people who make it.
No call centre and no middlemen. When you contact TCI Products, you speak to the team who design, build and check your mould.
- A real Warwickshire workshopUnit 15, Waterloo Park, Bidford-on-Avon, Alcester B50 4JG.
- Real people on the phoneCall the team on 01789 224228, Monday to Friday.
- The same team on every jobDesign, production and aftercare come from the people you see here.
- Part of TCI GroupFive specialist brands, one engineering team. Visit TCI Group.
Thomas LaneManaging Director
George PrestonDesign & Project Manager
Kelly BallingerHead of Partnerships
Jim AndertonProduction Manager
TheodoreEmployee Welfare