Bubble Tight lsolation Damper
Bubble-tight damper designed for isolation applications. Bubble-tight means the damper has the lowest possible leakage rating: zero.
The silicone blade seal and double-gland axle seals provide bubble-tight performance.
Standard bubble-tight damper includes a manual handwheel actuator.
There are many options when considering electric or pneumatic actuators.
Some include solenoid valves and switches. Contact factory for assistance.
Typical applications: Isolate filters and contaminated components in bag-in/bag-out systems.
According to the different shape of the valve blade,there are circle and rectangle bubble tight dampers.
The isolation dampers are used to isolate the duct or bibo housings HEPA or carbon filters for purpose of decontamination for major alternation works, replacement of filters,testing and air balancing.
Bubble Tight Dampers (BTD) or Air Tight dampers are of zero leakage are suitable for extremely high risk biosafety or animal biosafety Laboratories levels L3 above, radioactive,nuclear and chemical safety.
Construction
The damper is constructed of stainless steel 304, with flanges fully welded to both ends with minimum flange to flange distance of 200 mm.
Available in square flanges for easy BlBO housing connections. Bolting holes at flanges are provided.
Airtightness
The initial pressure was at least 3000Pa lower than the ambient pressure, the hourly leakage rate does notexceed 0.25% of housing volume.
The operation is manual, optional electric or pneumatic actuator.
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