Metering Pump System Components
Proper metering pump system operation depends upon the selection of appropriate system components.Milton Roy offers high quality accessories to suit your application requirements.
1.Safety Relief Valves
Most piping systems require the use of an external safety valve to protect the piping from over-pres-
sure.
Industrial diaphragm pumps feature internal safety valves to protect the pump, but external safety valves are still recommended. Milton Roy pro-
vides safety relief valves to match the operating pressures of all pumps we manufacture. Standard safety relief valves are available in specialty steel, 316 SS, alloy 20, and PVC.
2.Back Pressure Valves
To prevent unmetered liquid from free-flowing through the pump, metering pump systems require a greater pressure in the discharge line than the suction or inlet line.
When the process does not supply a minimum of 25 psi above the suc-
tion pressure, a back pressure valve is required. Standard back pressure valves are available in specialty steel, 316 ss, alloy 20 and PVC .
The metering pump's reciprocat-ing motion provides a pulsating dis-
charge flow. Applications requiring a steady flow can eliminate over 90% of the pulsations with a pulsation dampener. Dampeners are available for pressures to 1000 psi. Sizing is based on cubic inch/stroke displace-
ment of the specific pump.
4.Calibration Columns
® All Milton Roy
metering pumps are factory tested. Once installed, pump calibration should be periodi-
cally determined to verify proper operation, especially after the performance of any maintenance. Milton Roy calibration columns provide an inexpensive means of assuring
pumping accuracy.
5.Mixroy
Accurate dosing requires proper mixing of the solution being pumped. Mixroy
Mixers 6.Tank ChemicalFeed Systems
® mixers are direct drive, high speed units designed for mixing medium and low viscosity fluids and dispersion of light solids. Milton Roy offers
industrial tanks (in most available tank capacities) in steel, stainless steel, and polyethylene.
They are also available with pumps and mixers mounted, plumbed, and ready for installation. 16