Dwyer Instruments A-331 Filter Vent Plug 340793-762 providing a slip-free grip on

providing a slip-free grip on damper shafts with diameters of 1/2"

ensuring the system maintains correct static pressure and airtight venting of combustion gases

the normally closed solenoid valve is commonly used to balance or isolate flow within chilled water coils and cooling systems

Manual Reset Security: The M/R limit switch design requires a physical technician intervention after a trip

always verify system surge pressures against the factory data sheet

Dwyer Instruments A-331 Filter Vent Plug 340793-762 providing a slip-free grip onThe Dwyer Instruments A 331 is a professional grade 1 8" NPT filter vent plug engineered to protect sensitive pneumatic equipment from intake contaminants. Constructed with a durable nylon body and a sintered metal filter, this component is essential for maintaining the integrity of differential pressure gauges, such as the Magnehelic and Capsuhelic series, in high dust or industrial environments. The porous sintered metal element provides excellent