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Low Point Drain Assembly

Typical bottom point drains in pharmaceutical installations for aseptic processing are composed of a large CIP drain valve and a smaller valve for the condensate drain. These valves may have a common inlet, but the two outlets have to be separated and work alternately according to the upper running process: CIP or SIP. An additional connection has to be added and this connection should be as close as possible to the closure areas of the two valves in order to connect the temperature transmitter. This close coupling allows accurate detection of the temperature level on the lower part of the installation to be sure that during SIP cycles, the entire system is running at the required temperature. Welding of all the components of this system together require repetitive and sometimes complex work due to the fact that the height available is often very limited.

Bottom Drain Assembly
Rattiinox Bottom Drain Assembly

Rattiinox CAD Bottom Point Assemblies are the answer to this need. Two different designs are available according to the requested steam trap. Both types are available in two main sizes: 3/4” valve for CIP drain valve + 1/2” for condensate drain valve or 1” CIP drain +1/2” condensate drain. Both systems have all required Tri-Clamp connections and can be connected to the installation in few minutes, saving hours of on-site work and speeding the finishing of the installation. The CAD Bottom Point assembly will result in a very compact design with a final quality not possible when compared to the same work done with typical tools available during on-site or skid fabrication.  The desing is also flexible.  The product inlet and temperature sensor connections are reversible.

When coupled with an aseptic diverting valve instead of the common “sterile access point” valve, a true zero dead-leg can be achieved on the process side resulting in greater product recovery as well as better and faster cleaning and sterilization.  The two valves work together to provide a block and bleed system.

The design temperature range of -80 to 200 ºC (-112 to 392 ºF) and design pressure of the valve body from -1 to 10 bar (-14.5 to 145 psi) allows these assemblies to be safely specified for all common process applications.  As always the applied actuator and diaphragm may have different design temperature and/or pressure limits. The weakest component determines the maximum design temperature and pressure limits, when they are assembled.  The low point drain assemblies come standard with a internal surface (manually polished) of Ra ≤ 0.3μm (16μin) and an external surface polish of Ra ≤ 0.5μm (20μin).  Electropolishing  is also available.  Each valve body is labeled for full LOT traceability with Certificate of Conformity and Materials Certification 3.1.  Rattiinox maintains a strict Quality Assurance System which guarantees the control and traceability of the product.  CAD valve are classified for PED Directive 97/23/EC and fulfill ASME BPE Standards.

The low point drain assembly from Rattinox is precision engineered for the most stringent aseptic process requirements.