Category » Diaphragms
FAQs about Diaphragms
There were 32 questions found in this category:
Are ASEPCO diaphragms USP Class VI?
Yes, all of these diaphragm materials meet USP VI:SiliconeEPDMSilicone PlusEPDM PlusIf you would like an example of a USP VI Certificate of Conformance, just email a request to: info@asepco.com.- Are Asepco products FDA compliant?
Our diaphragm materials meet FDA CFR 177.2600
- Do you have a listing of what chemicals are not compatible with EPDM and Viton?
We don't have a list however, these are a couple good sources for this type of information:http://www.dupontelastomers.com/tech_info/chemical.asporhttp://www.coleparmer.com/techinfo/ChemComp.asp
- Do you have any diaphragms that can be used with Heptane?
We currently have two diaphragms that have limited resistance to Heptane.The first is EPDM Plus which has been shown to have approximately two weeks of life when continuously exposed to Heptane.The other is Viton A which has approximately two weeks of life also.We are going to be releasing new d ...
- Do you have any recommendations on cleaning diaphragms?
Asepco does not recommend any specific cleaning cycle for our diaphragms, but they are designed to be cleaned in process (CIP) or out of process (COP) using standard industry cleaning practices.
- Do you include the USP Class VI documentation with diaphragm shipments?
No, we do not include USP Class VI documentation with our shipments. However, it is available on request. Simply include a reference in your purchase order.
- Do you offer teflon diaphragms?
We believe that Teflon has sealing issues due to "cold flow" in the material that makes it a poor sealing material. We do offer diaphragms (EPDM Plus, Silicone Plus) that have a surface treatment that gives some of the positive properties of Teflon with the sealing properties of a rubber, attach ...
- Do you recommend a specific diaphragm Material of Construction (MOC) and can you provide an overall list of pharmaceutical grade MOCs that are available?
We do not recommend Diaphragm Materials of Construction (MOC) for specific process. Each process is unique and direct experience and testing is the best solution to determining the proper diaphragm material. The materials we offer are: Silicone EPDM Silicone Plus - silicone with a parylene ...
- Does ASEPCO take back diaphragm inserts?
We have discontinued our insert recycling program due to lack of interest. If you are interested in recycling your inserts please contact info@asepco.com.
- How do I return a diaphragm for evaluation
Fill in the attached form and return it with your diaphragm
- How often should I change my diaphragms?
The answer to this question is unique to each application. Because of the number of factors that affect diaphragm life, such as diaphragm material, SIP cycle and temperature, CIP cycle, CIP solution, and so on, you can have diaphragm life from a few days to a few years.For a more in-depth answer ...
- How thick is the parylene surface of your diaphragms?
The thickness is .002" (.05mm).
- Is Parylene available in small sheets or pieces?
Yes, it is available in two forms:Model # EPX - A set of a 60mm x 60mm x 3mm sheet and a set of 10mm x 1mm rodModel # ASTM-EPPS - A 4" x 6" X .075" sheet
- Is the EPDM diaphragm peroxide cured?
The EPDM material is varox cured which is a type of a peroxide cured system. The EPDM material is non-cytotoxic, sulphur-free
- What are parylene diaphragms? and what are the benefits?
We currently offer two diaphragms that contain parylene:Silicone Plus and EPDM Plus.Parylene is a material that mechanically bonds itself to the base elastomer. Parylene is similar to teflon in that it has very good chemical resistance and is a very slippery surface.What this gives you is enhanc ...
- What caused my diaphragm to fail?
There are many different ways for a diaphragm to fail from mis-handling to aging to chemical incompatibility. The majority of diaphragm failures are related to aging or chemical incompatibility. (To see an example of a failure click here: diaphragm failure) (If you'd like a full report on diaphr ...
- What Diaphragm material is best for steam applications?
This depends on the amount of steaming you are doing.In constant steam exposure a silicone diaphragm generally lasts approximately 40 hours while constantly actuating.A Steam-Grade Viton A diaphragm lasts approximately 200 hours under the same conditions.Here I've listed our current diaphragm el ...
- What Grade is your Viton?
We currently offer non-steam grade Viton A.
- What is the material grade on the silicone diaphragm?
Our silicone material grade is Q7-4765. This is a material made by Dupont Dow.
- What is the shelf life of an Asepco diaphragm? Specifically, how many years will the diaphragm last from the day it was produced?
An unused diaphragm can be kept for 5 years, if it is kept dry and out of direct sunlight.