The standard valve assembly consists of three components, the valve body, the diaphragm, and the actuation. Due to its unique characteristics, the diaphragm valve has prevailed for aseptic processes.
Demanding requirements for higher quality in process applications is proceeded by our developing innovative and advanced solutions. SED’s priority is to commit the resources needed and achieve high quality standards based on continuous developments beneficial for the customer’s application.
These developments provide the latest applied knowledge and standards, the requirement of compliances, andrecommendations of the admission organizations.
General and SED Specific Criteria:
Positive Closure: The resilient diaphragm bead in contact with the metal weir assures positive closure
Ideal for CIP and SIP: Clean-in-place and Steam-in-place operations may be performed in-line without valve disassembly or operation
In-Line Maintenance:The top entry design allows for in-line maintenance
Bonnet Isolation: The diaphragm isolates the working parts of the valve from the process media
Streamline Fluid Passage: A smooth contoured body, streamlined flow path and high quality interior surface prevents the accumulation of process fluids or contaminants
Minimal Contact Surfaces: The process contact surfaces (body and diaphragm) are minimal, enhancing the ease of cleaning and sterilization
One Centerline for Inlet and Outlet: One centerline for inlet and outlet simplifies installation and plant design work
Modular Construction System: Modular valve construction system reduces complexity and maintenance expense
Working Pressure from One and Both Sides for Pneumatic Operation (see illustration above)
The reference to the maximum possible working pressure in this catalogue is only valid for uni-directional media with a pressure drop (Delta p = 100%) independent from the flow direction. Uni-directional working pressure corresponds to most applications.
If the media pressure is simultaneously the same on both sides (Delta p = 0%) i. e. due to a certain applications of the valve in a loop installation, please ask a factory representative for the maximum possible working pressure or to specify for the correct layout of the valve.
If the sum of the two pressures does not exceed the maximum possible working pressure from one side, the valve can be applied for that application.
