Zenith Pumps H-Series Gear Pumps

1 Zenith PumpsPrecise, Pulseless,RepeatablePerformance In H-Series Pumps are ideal for metering in such applications as: Zenith Pumpstoday diaphragm, lobe, coarse gear , pis-ton, plunger, and screw Pumps . Each had problems with pulsation, flow inaccu-racies, multiple seal areas and slippage,which required constant calibration, highmaintenance, and extended Pumps met the challenge anddesigned a rotary external gear pump ofunique precision and simplicity. Manufac-turing techniques were developed to holdtolerances to +.00005" minimizing internalclearances to assure accurate and precisemetering. The pump s simplistic design ofonly three moving parts two metering gearsand a drive shaft provided long life andeasy years since, process engineers have relied on Zenith to provide precisionfluid handling solutions for their most difficultpumping applications.

2 Zenith gear pumpscan be found wherever precise, pulseless,repeatable metering of fluids is 1926, Zenith Pumps was approached by the synthetic fiber industry to design apump to provide a precise, pulseless, re-peatable flow and assure better qualitycontrol. The options then were the same as those in the chemical process industryHigh , repeatable flowsare assured even undervarying conditions of pressure, viscosity Pulsation. Unique design offers virtually pulseless flowwithout valves or flexibleelements to hinder Type:Rotary external spur gear , single :Refer to pump Speed:3 180 rpm depending upon application conditions and fluid :To 950 F (510 C). ApplicationsStandard ZeDRIVE with 1/2 hp QM and rear-port HMB Temperature Capability. Operating temperatures to 950 F (510 C).Maximum three moving parts;components are through-hardened tool and diesteels to 64 Rc or sleeve bear-ings for low-cost Volumetric efficiency isachieved with optimum operating clearances andassured under pressure by built-in alignment Construction.

3 Ground and lapped components for close of operating SlurriesLubricantsPolymersPlasticizersPo lyolsPlasticsPaintsResinsMonomersOilsPig mentsTarsMany othersHPB PumpHMB PumpFlow Rates:.00013 to gpm (. l/min).Capacities:.16/.297/.584 Pressure:Flooded suction recommended;40 psi ( kg/cm2) required to energize mechanical face Pressure:Limits: 4,000 psi (281 kg/cm2).Viscosity:1 to 2,000,000 :L-16 Parco-Lubrited cast iron mounting of Construction:D2 tool steel Models 4647 and series tool steel Models 5205 and 5704 available in either D2 or M :Grafoil Packing Model face with tang slot Models 4647 and face with outer drive shaft Models 5556 and Rates: .0028 to .476 gpm (. l/min). Pressure:Flooded suction recommended; 40 psi ( kg/cm2) required to energize mechanical face Pressure:Limits: 4,000 psi (281 kg/cm2).

4 Viscosity:1 to 2,000,000 :L-5471 Parco-Lubrited cast iron mounting of Construction:M2 tool steel All standard :Grafoil Packing Model face with tang slot Model face with outer drive shaft Model PumpHLB PumpFlow Rates: .008 to gpm (. l/min).Capacities:10/20/30/50 Pressure:Flooded suction recommended; 40 psi ( kg/cm2) required to energize mechanical face Pressure:Limits: 4,000 psi (281 kg/cm2).Viscosity:1 to 2,000,000 :L-5139 Parco-Lubrited cast iron mounting of Construction:D tool steel All standard :Grafoil Packing Model face with tang slot Model face with outer drive shaft Model Rates: .055 to gpm (.21-36 l/min).Capacities:70/100 cc/rev. Inlet Pressure:Flooded suction Pressure:Limits: 4,000 psi (281 kg/cm2).Viscosity:1 to 2,000,000 :L-5427 Parco-Lubrited cast iron mounting of Construction:M series tool steel All standard :D-110 Packing Model Guide5)Determine differential pressure (P) (discharge - inlet) in )Calculate input torque using the following:Th=.

5 01 P CTv= N K VTt= Th+ Tv7)Determine maximum torques from Table )Choose a speed reduction ratio (R) basedon pump operating = 22:1; 4 - 82 rpm R = 11:1; 8 - 160 rpm R = 5:1; 18 - 180 rpm9)Drive Horsepower = Tt/ (35 R .87)10)For hp <.5 choose .5 hp. For hp between .5 and choose 1 larger hp round up to the nearestwhole following are general guidelines forpump selection and should be confirmedwith the factory or sales representativebefore )Choose appropriate pump capacitybased on flow rate. (See Chart 1)2)Determine pump operating speed (N).N = Flow Rate (cc/min) (C) PumpCapacity (cc/rev)3)Determine operating viscosity (V) inpoise. If fluid is non-newtonian, followsteps 3a and 3b. 3a)Identify pump s operating shear rate.(See Chart 2)3b)Refer to your viscosity vs. shear ratecurve for operating viscosity (V) )Refer to Table 1 for pump constant (K).

6 Pump Capacity Selection Rate (cc/min)110100010000100000100=3 - 15 RPM=15 - 75 RPM=75 - 180 RPMHXB 200 HXB 100 HXB 70 HMB 10 HMB .584 HPB .297 HPB .160 HPB 50 HLB 30 HLB 10 HLB 20 Chart 1 Shear Rate vs. Speed39500365003350030500275002450021500 18500155001250095006500350050010 25 40 55 70 85 100 115 130 145 160 175 Speed (RPM)HXBHMB 10 HLBHMB , Rate (sec -1)Chart 2 Constant (K)Table 2 HPB .. (All Models).. 80 .584.. (Except 4647).. 195 .. (Except 4647).. 410 .. (Except 4647, 5704).. 460 .. (5704).. 600 .. (4647).. 200 .. (All Models).. 1200 10-50.. (4729, 5548).. 900 10-50.. (5592).. 2000 70.. (4980).. 4000 100.. (4980).. 6500 .. (4980).. 7000 TorqueTable 1 FAILURE, IMPROPER SELECTION OR IMPROPER USE OF THEPRODUCTS AND/OR SYSTEMS DESCRIBED HEREIN OR RELATEDITEMSCAN CAUSE DEATH, PERSONALINJURYAND document and other information from Zenith Pumps , its subsidiaries andauthorized distributors provide product and/or system options for further investi-gation by users having technical expertise.

7 It is important that you analyze allaspects of your application and review the informationconcerning the product orsystem in the current product catalog. Due to the varietyof operating conditionsand applications for these products or systems, the user, through its own analysisand testing, is solely responsible for making the nal selection of the productsand systems and assuring that all performance, safety and warning requirementsof the application are products described herein, including without limitation, product features,speci cations, designs, availability and pricing, are subject to change by ZenithPumps and its subsidiaries at any time without .160..297..584.. 10.. 10.. 20.. 30.. 50.. 70.. 100.. 200.. Copyright 1996 Zenith Pumps H-02 10/04 Zenith Pumps1710 Airport RoadMonroe, NC 28110 Phone: 704-289-6511 Fax: Colfax Buisiness UnitISO 9001: 2000 Register