Flow control2Ă— diaphragm life-cycle for a German control-valve manufacturer
The client's incumbent supplier delivered slower than valves could be built, causing lost production. Harkesh developed a replacement diaphragm and te…

Case study · Thermostatic
A leading thermostatic-products manufacturer in the United States needed a fast design change to improve actuator performance.
After initial approval of a new rubber plug and diaphragm, the client wanted to improve the actuator's performance — which meant a challenging design change to a three-step plug geometry.
Harkesh executed the sample development from drawing to dispatch in just 12 days, resolving the change quickly. The entire project moved to the new plug design.
Key outcome:
A challenging three-step plug redesign taken from drawing to dispatch in just 12 days — fast enough to move the whole project to the new design.
The challenge
The client had embarked on a new project requiring a rubber plug and diaphragm. However, after initial approval, they wanted to improve the performance of the actuator.
That meant a design change — and a tight timeline to keep the project moving.
Our approach
A design change was made to have three different steps on the plug instead of two. This was a challenging geometry and the tool design was critical.
Our team prioritised the tooling and sample development to turn the change around quickly without compromising quality.
The results
Fast turnaround
12 days end to end
We executed the sample development from drawing to dispatch within 12 days.
Tooling
Challenging geometry solved
The redesigned three-step plug demanded critical tool design, which our team delivered under a tight timeline.
Outcome
Whole project switched
Our fast development resolved the change quickly and the entire project shifted to the new plug design.
We successfully executed the sample development from drawing to dispatch within 12 days. Our fast development helped resolve the change quickly, and the entire project was shifted to the new plug design.
Materials & application
Questions, answered
For this thermostatic plug and diaphragm, we executed the sample development from drawing to dispatch in 12 days — including a challenging three-step plug redesign and critical tooling.
The client wanted to improve the actuator's performance after initial approval. Moving from a two-step to a three-step plug geometry achieved that, though it made the tool design more challenging.
No. We prioritise tooling and sample development to compress the timeline, but the parts still meet the same quality and dimensional standards — here, the whole project moved to the new design on the strength of the prototype.

Address
Mumbai Office: Harkesh Rubber LLP, 108, Adarsh Industrial Estate, Sahar Road, Chakala, Andheri (East), Mumbai 400099
General Enquiries
contact@harkeshrubber.com
Business Phone
+91-22-40060400
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