Category » Troubleshooting

There were 8 questions found in this category:

1. I am having sealing trouble with the diaphragm on my valve, how do I fix this
   We have found that the majority of the time a user is having sealing issues is due to incorrect diaphragm installation. Attached are instructions that come with each diaphragm, make sure they have been followed and your problem is likely to go away.
2. Is a CIP/SIP port needed on an ASEPCO valve for it to be CIP/SIPable?
   No, CIP/SIP ports are not needed for our valves to be cleaned-in-place or steamed-in-place. All unported ASEPCO valves have been proven (through validation and use) to be CIP/SIP. Ports are added to ASEPCO valves to allow the valve to be CIP'd/SIP'd while it is CLOSED.
3. Is it possible to increase the pressure my pneumatically actuated tanks will seal at to an amount greater than 80 PSI?
   0.5-inch valves will stay sealed at up to 100 PSI inlet (tankside) pressure. 2-inch valves require an additional spring in the actuator seal at 100 PSI inlet (tankside) pressure. For any pneumatically actuated valves you can apply additional air pressure to the spring side of the actuator to i ...
4. What are "dead legs" and why must they be avoided in aseptic systems?
   A "dead leg" is a sump, or area of entrapment, in a vessel or a piping system where contamination can occur. Dead legs take longer to flush out during CIP, extending rinsing cycles, creating "cold spots" during SIP, and increasing downtime. A typical occurrence of a dead leg would be at a "tee". ...
5. 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 ...
6. 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 have a failed diaphragm that you ...
7. What is ASEPCO's stance on altering a valve once it's been manufactured? If this is not recommended, why?
   It is not recommended since we have no way of insuring that all the dimensions and physical properties meet the specifications.
8. What is the shop air pressure needed to actuate your valves?
   Minimum air pressure requirements are:60 psi - 0.5" pneumatic actuators80 psi - 1"-4" pneumatic actuators