Valve diffusers
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VMP
Polypropylene ventilation valve diffuser. The air flow rate is adjusted by screwing (reducing the flow rate) or unscrewing (increasing the flow rate) the central disc.
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VMA
Steel ventilation valve diffuser far extraction. The air fio w rate is adjusted by screwing (reducing the flow rate) or unscrewing (increasing the flow rate) the centrai disc.
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VEA
Steel ventilation valve diffuser. The air flow rate is adjusted by screwing (reducing the flow rate) or unscrewing (increasing the flow rate) the central disc.
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