Compact, High Functioning Air Admittance Valve (AAV) for Internal installations.
The ByStudor Handi-Vent 4 AAV provides plumbing drainage ventilation to prevent the loss of water trap seals in low rise buildings. It allows air to enter the drainage system, but does not allow foul gas to escape, in order to limit pressure fluctuations within sanitary pipework.
Benefits and features of the ByStudor Handi-Vent 4:
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