645 range Pressure Relief Valves (PRV Tank Tops for LOW PRESSURE Air Relief)

HD Process supply the Tassalini range of PRVs for protection of tanks from both over-pressure and vacuum from pumping or during CIP (eg related to thermal expansion and contraction.)

These units relieve both vacuum and positive pressure allowing the tank to suck in and blow out.  The 645 range PRVs will relieve under very light conditions of vacuum or  positive pressure.  

The range includes the  645BNZ type (PRVs with RJT connections), 645L ((PRVs with RJT connections), K64VP (tank top breather with Tri clover connection and (adjustable) spring setting to maintain positive pressure).

• Sizes from 1¼” to 4”

• Flowrates up to 160,000 l/h

• SEE ALSO K64VP which offers adjustable set pressure to relieve and is ideal for tanks under pressure such as beer tanks

• 645BNZ available in sizes from 2” to 4” female RJT connections (Also available in 1½” to 2½” butt weld connections as 645L)