Products

Standard lead times are listed below. If you need an order expedited, please contact your customer service representative. Please be aware that overnight shipments receive priority over ground shipments. Gala/Beta/Concept - 3 days Sigma series - 5 days ProMus - 2 weeks Dulcometer 3-4 days

Installing a spring in the discharge valve of the pump gives some improvement, but for the maximum improvement, a backpressure valve should be installed at the end of the line.

(YES) because the diaphragm is completely supported with hydraulic oil you can turn down the ProMus pump below 30%. There are some limitations though and it depends on the size of the pump and the pressure. Please contact ProMinent for Performance Graphs for each pump size.

(NO) because this pumps has internal mechanically actuated valving for the hydraulics and they are pressure dependent. We have found that when you use a variable speed motor it loses torque at lower RPMs. This can cause several problems such as: Not restarting after a stalled condition, Loss of flow or intermittent flow at lower RPMs, overheating of motors.

(YES) the ProMus pump uses a common drive case for all pumps. There are (5) different gear ratios. Each of the 8 plunger body?s and 3 liquid end can be changed.

(NO)

(NO) the gearing in a ProMus pump requires a hydraulic press to insert the output shaft into the eccentric at a .002 precise position. If this tolerance is not kept the brass gear can strip the teeth.

(NO) the threads on the valves of a ProMus are a straight loose fit thread. This prevents gulling, the use of a .030 Teflon seal is used between the capturing areas on the parts and the valve torque is minimal as not to tear the small Teflon seal. This can hold in excess of 3000 Psi.

(NO) the special machined liquid end and plunger body capture the diaphragm and crush the outer edges of the diaphragm allowing it to clod flow into the sealing grooves. Diaphragms must be replaced.

(YES) Depending on the chemical, and the amount of time the drive was exposed you can usually just flush the drive with solvent or a mild detergent and allow to dry thoroughly before re-commissioning. Check the teeth of the drive gears for pitting and bearing noise.

(YES) there are videos on U Tube of diaphragm replacement and Priming the hydraulic system.

(NO) there internal relief is designed to protect the pump and diaphragm only. Always use a external Back Pressure and pressure relief valve set below the internal pressure relief of the pump. If the pump runs in internal relief for longer than 24 Hrs. you need to must replace the diaphragm to prevent rupturing.