Products

GENERAL
Rekos pumps can be supplied as simplex piston metering pumps type KR and duplex piston metering pumps type ZKR.
Advantages of piston metering pumps are: minor dependency on back pressure and linear flow variation as a function of the stroke length.
The metering pumps are therefore very suitable for proportional metering where the stroke length is adjsuted by means of a remote control signal.
METERING HEAD
Metering heads are supplied in plastic for max. 10 bar and in stainless steel for up to 200 bar
The correct choice of the metering heads depends on the aggressivity of the chemical, its temperature and viscosity, and on the system pressure. Environmental factors (harsh operating conditions,radiant heat) must also be considered.
SUCTION AND DISCHARGE VALVES
Suction and discharge valves can be supplied as double-ball valves, spring-loaded single-ball valves or disk valves,depending on the size. Spring-loaded valves are recommended if the viscosity of the chemical exceeds 400 mPas.
FLUSHING ATTACHMENT
Metering heads are generally fitted with a flushing attachment.
Flushing water should be applied if the chemical being used is very aggressive, to prevent damage by corrosion from leakage that is bound to occur.
If the medium used is abrasive,the flushing water is intended to prevent the piston and packing from failing after only a short time of operation as a result of intensified leakage.The flushing water pressure should.in this case, be greater than that of the medium.

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