Oberdorfer # 935136C Chemsteel Gear Pump End only

The Oberdorfer 935136C is a Chemsteel Gear Pump End only, with 316 Stainless Steel Housing, 316 Stainless Steel shafts, W88 Drive Gear, W88 Idle Gear, Carbon Bearings, PTFE Teflon/Graphite Packing with 1-1/2 Inch NPT by 1-1/2 Inch NPT Ports, replacement pump end only without a Motor. This rotary gear pump is of the external gear positive displacement type, displacing a finite volume of fluid with each shaft revolution. As such, capacity varies in direct proportion to pump speed. This pump is rated for operation at a maximum shaft speed of 1750 RPM. This pump can handle viscous fluids to 100,000 cps (462,000 SSU) at reduced shaft speeds, with flow rates to 23 GPM GPM, and a suction lift capability to 20 feet (6.1 meters) for new pumps. It has rugged, three-section, o-ring sealed thru-bolt construction provides ease of servicing and parts replacement. This pump has precision investment castings of type 316 Stainless Steel which is an all purpose austenitic stainless alloy, with excellent corrosion resistance, and is the premium choice of all 300 series stainless alloys. The precision machined Helical metallic gears of W88 Stainless offer noise reduction by as much as 10db. The type W88 Alloy is a non-galling stainless alloy for "gear on gear" applications, created by alloying special rare and select materials. Metal/Metal gear combinations are limited to a maximum differential pressure of 150 PSI. This pump features slotted bearings to lubricate the shaft and gear surfaces, and hydraulic porting to balance axial thrust and to reduce wear. The Carbon sleeve bearings and are for maximum chemical resistance and high load capacity as the carbon bearings function as thrust flanges and wear plates. They are full size bearings that match the gear diameter and eliminate the need for separate wear plates. This pump is equipped with Teflon impregnated graphite packing and will require periodic adjustment to avoid excessive leakage. Eventually all the packing in the pump will become deteriorated and will have to be replaced. The o-rings are Teflon encapsulating, silicone and provide elastic memory to assure an effective long lasting seal. The upper shaft configuration lends itself to in-line pump seal maintenance without the leakage of trapped chemicals from an incompletely drained pump. Ample port sizing of 1-1/2 inch FNPT ports reduce the likelihood of cavitation when inlet pressure is marginal. Additionally, this pump offers bi-directional operation for applications requiring reversing flow, and will perform equally well in either direction. To change flow direction effectively reversing the suction and discharge ports, simply switch driver rotation by following motor wiring diagram instructions. The positive displacement principle requires the installation of a pressure relief valve protecting the pump against over pressure. Over pressurization can occur when a valve is closed or a blockage occurs.