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Stokvis piles on the pressure
Published: December 2006
Stokvis Energy Systems has increased its range of automatic and self-contained pressurisation units for closed-loop heating or chilled-water systems. Econopress PU131 and PU151 units offer 3 and 5 bar, respectively. These chassis-mounted units have a single-phase bronze pump, pressure switch, pressure-regulating valve, 18 litre polypropylene break tank and a base of mild steel with zinc plating and treatment to reduce chemical activity. Suction pipework is 32 mm of PVC-u plastic. Discharge pipe is 1/2 in BSP galvanised steel. A non-return valve and pressure-regulating valve are also included. Options include pre-assembled high- and low-pressure switches for boiler and chiller control interface. a free-standing expansion vessel, wall-mounting brackets and buffer vessel. Related articles: 
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