Low pressure reducing valve ZM-R100

Description

Low pressure reducing valves control secondary pressure (p2, behind valve). Low pressure reducing valves ZM-R100 are controlling protective gas or inert gas to isolate processes from contamination by atmospheric oxygen.

Technology

ZM-R100 is a spring loaded differential pressure regulator with reference to ctual atmospheric pressure via a sensor hole to ambient. Under non operating conditions,the atmospheric pressure and the adjustable range spring and a stem hold the double-valve open. Under operating conditions, gas enters from primary (p1) through the valve and reaches counter side of diaphragm via a pulse line. As a result, the differential pressure is exactly in balance with the force of adjustable range spring.Double-valve will be closed as soon as secondary pressure (p2) raises set point of adjustable range screw. Valves will be open again, with secondary pressure below set point. Valves seat tightness is at least according to VDI/VDE 2174. The pulse line is compensating dynamic pressure drop. Best performance with pick-up directly on process or at least 300 mm behind unit. Optional D-connection is used for pilot line connection in case of dome loaded service (high pressure blanketing). ZM-R100 is vacuum-proof, manufactured in decreasing design and uses no external energy. ZM-R100 units are performing with connected pulse line only.

Application

The low pressure reducer ZM-R100 is used to reduce pressure of air or gas in pressure range of 8 to 210 mbar g. The regulator is especially designed for inertization and blanketing processes for reactors, storage tanks and containers using inert gas, such as nitrogen.