Pinch Valve Liner Service Life
The Pinch Valve liner (also known as sleeve, hose, tube, diaphragm, bladder, rubber membrane etc) is the only wetted part to a Pinch Valve, making it the only part that needs replacing. The liners do need replacing and servicing from time to time, but because they are the only part that need replacing, this makes the total cost of ownership of a Pinch Valve much less compared to other valve types.
It is not possible to guarantee the lifetime of a pinch valve liner, but reading some of AKO’s customer case studies may give an idea for certain applications. If the liner is looked after to the best of the users ability, under the correct recommended specifications, then the best possible lifetime of the pinch valve and it’s liner will be achieved.
See more about recommendations for a healthy pinch valve liner, and how to avoid the liner becoming split, torn or ruptured here.
Pinch Valve Liner Repair
A pinch valve liner can be easily replaced in a few quick steps. For AKO pinch valves, nominal bore sizes 10mm to 80mm do not need any special fitting tools to fit a new sleeve/liner. From nominal bore sizes 100mm upwards, a fitting kit can be used to aid with the pinch valve liner replacement process. This kit consists of a pot of lubricant paste, a mounting pipe, assembling screws & nuts, and for sizes 125mm upwards – mounting wood.
The pipe is placed inside the new liner when the end connections (i.e. flanges) are being bolted back together, to prevent the liner deforming or collapsing.
The video below shows how to replace a pinch valve liner in just a few quick and easy steps:
Pinch Valve Liner Types
There are a range of different types of pinch valve liners, and each elastomer has its own maximum temperature rating. You can find out more about the different types, temperatures, and product codification by clicking here.