Table 1.1: KERR KP-3300 Series Main Model Specifications Summary

Table: KERR KM-3300SHPT Core Performance Specifications

Characteristic	KP-3300BC (Plunger Pump)	KP-3300HP (High-Pressure Plunger Pump)	KP-3300PT (Piston Pump)
Pump Type	Horizontal Triplex Plunger Pump	Horizontal Triplex Plunger Pump	Horizontal Triplex Piston Pump
Rated Power	56.6 BHP (42.2 kW) (Website shows 76.4 BHP)	76.4 BHP (57 kW) (PDF datasheet shows 57 BHP)	78 BHP (58.2 kW)
Number of Cylinders	3	3	3
Stroke Length	3.0 inches / 76.2 mm	3.0 inches / 76.2 mm	2.5 inches / 63.5 mm
Max Speed (Kerr)	435 RPM	435 RPM	470 RPM
Minimum Speed	100 RPM	100 RPM	100 RPM
Plunger/Piston Diameter Range	1.250 - 2.500 inches	1.250 - 2.250 inches	2.500 - 3.000 inches
Max Working Pressure	"3600 PSI (1.250" plunger) / 1049 PSI (2.500" plunger)"	"8564 PSI (1.250" plunger) / 3000 PSI (2.250" plunger)"	"1469 PSI (2.500" piston) / 1020 PSI (3.000" piston)"
Frame Rated Load	"5,150 lbs"	"5,150 lbs"	"7,210 lbs"
Fluid Cylinder Rated Pressure	"3,600 PSI"	"6,000 PSI"	"3,600 PSI"
Suction Connection	3" NPT	2" NPT	3" NPT
Discharge Connection	2" NPT	1" NPT	2" NPT
Pump Average Weight	800 lbs / 364 kg	"1,000 lbs / 455 kg"	"1,000 lbs / 455 kg"
Lubrication System (Standard)	Splash - Gravity Feed	Splash - Gravity Feed	Splash - Gravity Feed
Lubricating Oil Capacity	12 quarts / 11.36 liters	12 quarts / 11.36 liters	12 quarts / 11.36 liters

Table 1.2: KERR KP-3300BC Performance Data (Based on 100% Volumetric Efficiency)

Plunger Diameter (inch)	Max Pressure (PSI)	Displacement Per Revolution (Gallons)	100 RPM (GPM / BPD)	150 RPM (GPM / BPD)	200 RPM (GPM / BPD)	250 RPM (GPM / BPD)	300 RPM (GPM / BPD)	350 RPM (GPM / BPD)	375 RPM (GPM / BPD)	400 RPM (GPM / BPD)	435 RPM (GPM / BPD)
1.250	3600	0.0478	4.8 / 164	7.2 / 246	9.6 / 328	12.0 / 410	14.3 / 492	16.7 / 574	17.9 / 615	19.1 / 656	20.8 / 713
1.500	2914	0.0688	6.9 / 236	10.3 / 354	13.8 / 472	17.2 / 590	20.7 / 708	24.1 / 827	25.8 / 886	27.5 / 945	29.9 / 1027
1.750	2141	0.0937	9.4 / 321	14.1 / 482	18.7 / 643	23.4 / 804	28.1 / 964	32.8 / 1125	35.1 / 1205	37.5 / 1286	40.8 / 1398
2.000	1639	0.1224	12.2 / 420	18.4 / 630	24.5 / 840	30.6 / 1050	36.7 / 1259	42.8 / 1469	45.9 / 1574	49.0 / 1679	53.2 / 1826
2.250	1295	0.1549	15.5 / 531	23.2 / 797	31.0 / 1063	38.7 / 1328	46.5 / 1594	54.2 / 1860	58.1 / 1993	62.0 / 2125	67.4 / 2311
2.500	1049	0.1912	19.1 / 656	28.7 / 984	38.2 / 1312	47.8 / 1640	57.4 / 1968	66.9 / 2296	71.7 / 2460	N/A	N/A

Table 1.3: KERR KP-3300HP Performance Data (Based on 100% Volumetric Efficiency)

Plunger Diameter (inch)	Max Pressure (PSI)	Displacement Per Revolution (Gallons)	100 RPM (GPM / BPD)	155 RPM (GPM / BPD)	200 RPM (GPM / BPD)	245 RPM (GPM / BPD)	290 RPM (GPM / BPD)	335 RPM (GPM / BPD)	380 RPM (GPM / BPD)	400 RPM (GPM / BPD)	435 RPM (GPM / BPD)
1.250	8564	0.0478	4.8 / 164	7.4 / 253	9.6 / 328	11.7 / 402	13.9 / 475	16.0 / 549	18.2 / 622	19.1 / 656	20.8 / 713
1.375	7078	0.0578	5.8 / 198	9.0 / 307	11.6 / 396	14.2 / 485	16.8 / 574	19.4 / 663	22.0 / 752	23.1 / 793	25.1 / 862
1.500	5947	0.0688	6.9 / 236	10.7 / 365	13.8 / 472	16.9 / 578	20.0 / 684	23.1 / 790	26.1 / 896	27.5 / 945	29.9 / 1027
1.625	5084	0.0807	8.1 / 277	12.5 / 429	16.1 / 553	19.8 / 678	23.4 / 803	27.0 / 927	30.7 / 1051	32.3 / 1107	35.1 / 1204
1.750	4400	0.0937	9.4 / 321	14.5 / 498	18.7 / 643	23.0 / 787	27.2 / 931	31.4 / 1076	35.6 / 1220	37.5 / 1286	40.8 / 1398
1.875	3855	0.1076	10.8 / 369	16.7 / 571	21.5 / 737	26.4 / 904	31.2 / 1070	36.0 / 1235	40.9 / 1401	43.0 / 1475	46.8 / 1605
2.000	3400	0.1224	12.2 / 420	18.9 / 650	24.5 / 840	30.0 / 1028	35.5 / 1217	41.0 / 1406	46.5 / 1595	49.0 / 1679	53.2 / 1826
2.125	3026	0.1382	13.8 / 474	21.4 / 734	27.6 / 948	33.9 / 1160	40.1 / 1374	46.3 / 1587	52.5 / 1801	55.3 / 1895	60.1 / 2061
2.250	3000	0.1549	15.5 / 531	24.0 / 823	31.0 / 1063	38.0 / 1300	44.9 / 1540	51.9 / 1778	58.9 / 2018	62.0 / 2125	67.4 / 2311

Table 1.4: KERR KP-3300PT Performance Data (Based on 100% Volumetric Efficiency)

Piston Diameter (inch)	Max Pressure (PSI)	Displacement Per Revolution (Gallons)	100 RPM (GPM / BPD)	155 RPM (GPM / BPD)	200 RPM (GPM / BPD)	245 RPM (GPM / BPD)	290 RPM (GPM / BPD)	335 RPM (GPM / BPD)	380 RPM (GPM / BPD)	425 RPM (GPM / BPD)	470 RPM (GPM / BPD)
2.500	1469	0.1594	15.9 / 547	24.7 / 847	31.9 / 1093	39.0 / 1339	46.2 / 1585	53.4 / 1831	60.6 / 2077	67.7 / 2323	74.9 / 2569
2.750	1214	0.1928	19.3 / 661	29.9 / 1025	38.6 / 1323	47.2 / 1621	55.9 / 1918	64.6 / 2216	73.3 / 2514	82.0 / 2811	90.6 / 3109
3.000	1020	0.2295	22.9 / 787	35.6 / 1220	45.9 / 1574	56.2 / 1929	66.6 / 2283	76.9 / 2637	87.2 / 2991	97.5 / 3346	107.9 / 3700

Fluid End Design and Materials

The fluid end is the part of the pump that directly contacts the fluid being pumped. Its design and material selection directly impact the pump's corrosion resistance, wear resistance, pressure handling capability, and adaptability to different fluids.

Table 3.2: KP-3300 Series Fluid End Component Materials and Design Features

Component	KP-3300BC	KP-3300HP	KP-3300PT
Fluid Cylinder (Fluid End Body)	Material options include: Cast ductile iron (65-45-12), cast carbon steel (WCB), cast nickel aluminum bronze (955), cast stainless steel CF8M (316), cast duplex stainless steel CD3MN (2205), forged carbon steel (A105), forged stainless steel (316).	Material options include: Forged carbon steel (A105), forged stainless steel (316). Other materials available upon request.	Material: Cast ductile iron. Other materials available upon request. The service manual mentions the KP-29D fluid end body is ductile iron.
Plunger (BC/HP Models)	Material options: Colmonoy 730 hard-faced, solid ceramic (max 2160 PSI), Kerramic (ceramic) coated, solid 316 stainless steel.	Material options: Colmonoy 730 hard-faced, solid ceramic (max 2160 PSI), Kerramic (ceramic) coated, solid 316 stainless steel.	Not applicable (plunger pump)
Piston and Liner (PT Models)	Not applicable (plunger pump)	Not applicable (plunger pump)	Piston/liner combination options: Rubber/ceramic sleeve, rubber/chrome-plated sleeve, rubber/Kerramic (ceramic) coated. The service manual lists various piston assemblies (KP-245 series) and liner options, including heat-treated chrome-plated (KP-285-250CH), ceramic, and Kerramic liners.
Valves and Seats	Valve types: Plate/seat (max 2160 PSI), wing guided. Material combinations include: Delrin disc/SS (316), Ni-Al-Brz (955)/metal-to-metal, Monel/metal-to-metal, SS (316)/metal-to-metal, 17-4 HT/metal-to-metal, Titanium/SS (316), SS (316)/AR urethane insert, PEEK/SS (316), 17-4 HT/AR urethane insert, etc.	Valve types: Wing guided. Material combinations include: Ni-Al-Brz (955)/metal-to-metal, Monel/metal-to-metal, SS (316)/metal-to-metal, 17-4 HT/metal-to-metal, SS (316)/AR urethane insert, 17-4 HT/AR urethane insert.	Valve types: Wing guided. Material: 17-4 HT / AR urethane insert. The service manual mentions KP-80HT (discharge valve) and KP-81HT (suction valve) are heat-treated, abrasion-resistant (A/R) with inserts; KP-82HT valve seat is heat-treated, abrasion-resistant. Inserts are available in blue (KP-85B) and red (KP-85R) abrasion-resistant types.
Seals and Packing	Not detailed in datasheet.	Not detailed in datasheet.	Pony rod oil seal (KP-24), pony rod seal kit (KP-24W-A), valve cover O-rings (KP-32N Nitrile, KP-32A Aflas), piston O-rings (KA-246, KP-246RD).

Maintenance and Servicing

Regular maintenance and servicing are crucial for ensuring the long-term reliable operation of KP-3300 series pumps.

Lubrication:

Check oil levels in the pump and planetary gear reducer daily; change crankcase lubrication oil monthly (first change recommended after one week of initial operation). Specific lubricant types and capacities are detailed in Section 3.1.

Routine Inspections (Daily/Monthly):

Daily visual inspection for leaks, packing gland tightness, and obvious malfunctions. Monthly inspection of valve wear, bearing endplay, and nut/stud tightness.

Torque Specifications:

The KP-3300PT service manual provides detailed torque values for key fasteners (e.g., connecting rod bolts: 125 ft-lb; fluid end stud nuts: 120 ft-lb) and recommends reducing torque accordingly when using lubricants.

Wear Parts Replacement:

The service manual details procedures for replacing valves, valve seats, pony rod packing, and power end disassembly/reassembly. Effective maintenance relies on correct identification and procurement of wear parts. The KP-3300PT service manual provides extensive parts lists and numbers, categorizing these components as fluid end wear parts and power end repair parts, and listing material information where possible, providing users with practical tools for maintenance planning and spare parts ordering.

Table 2.1: KERR KP-3300PT Main Wear Parts

Component Category	Component Name	Part Number (Partial)	Quantity Per Pump/Assembly	Material (Mentioned in Manual)
Piston Assemblies	Piston Assembly 2 1/2"	KP-245-250	3	-
	Piston Assembly 2 3/4" (Dry-Run Type)	KP-245-275RD	3	-
	Piston Assembly 3"	KP-245-300	3	-
	Piston Cup 2 1/2"	KT-263-250 / KP-260-250	3	-
	Piston Cup 2 3/4" (Dry-Run Type)	KP-263-275RD / KP-260-275RD	3	-
	Piston Cup 3"	KP-263-300 / KP-260-300	3	-
Liners	Liner 2.5" Heat Treated	KP-285-250CH	3	Chrome
	Liner 2.75"	KP-285-275CH	3	Chrome
	Liner 3"	KP-285-300	3	-
	Ceramic Liner (Various Sizes)	KP-285-xxxCER	3	Ceramic
	Kerramic Liner (Various Sizes)	KP-285-xxxKER	3	Kerramic
Valve Assemblies	Discharge Valve (Heat Treated, A/R w/ Insert)	KP-80HT / KP-300HT	3	Heat Treated, Abrasion Resistant
	Suction Valve (Heat Treated, A/R w/ Insert)	KP-81HT / KP-305HT	3	Heat Treated, Abrasion Resistant
	Valve Seat (Heat Treated, A/R)	KP-82HT	6	Heat Treated, Abrasion Resistant, Stainless Steel
	Abrasion Resistant Valve Insert (Blue/Red)	KP-85B / KP-85R	6	Abrasion Resistant Material
	Valve Spring (Discharge Long/Suction Short)	KT-52L / KT-52S	3 (each)	-
Seals	Pony Rod Oil Seal	KP-24	3 per gland	-
	Pony Rod Seal Kit	KP-24W-A	3 sets	-
	Valve Cover O-ring	KP-32 / KP-32N / KP-32A	6	Nitrile Rubber, Aflas
	Piston O-ring	KA-246 / KP-246RD	3	-
Gaskets	Liner Gasket	KP-295	3	-
	Pony Rod Gland Gasket	KP-22G	3	-
	Crankcase Cover Gasket	KP-12	1	-
	Bearing Housing Gasket	KP-7	2	-

Table 2.2: KERR KP-3300BC/HP Main Wear Parts

Component	Material/Type Options
Plunger (BC/HP)	"Colmonoy 730 hard-faced, solid ceramic (KP-3300HP max 2160 PSI), Kerramic (ceramic) coated, solid 316 stainless steel"
Valve/Valve Seat (BC)	"Plate/seat (max 2160 PSI), wing guided; Delrin disc/SS(316), Ni-Al-Brz(955)/metal-to-metal, Monel/metal-to-metal, SS(316)/metal-to-metal, 17-4 HT/metal-to-metal, Titanium/SS(316), SS(316)/AR urethane insert, PEEK/SS(316), 17-4 HT/AR urethane insert"
Valve/Valve Seat (HP)	"Wing guided; Ni-Al-Brz(955)/metal-to-metal, Monel/metal-to-metal, SS(316)/metal-to-metal, 17-4 HT/metal-to-metal, SS(316)/AR urethane insert, 17-4 HT/AR urethane insert"

Special Repair Tools: The KP-3300PT service manual lists special tools required for repair:

Table 2.3: KERR KP-3300PT Special Repair Tools

Tool Name	Part Number (Partial)
Valve Puller (Wing Guided Seat Three-Pin Type)	KP-76M
Valve Seat Installation Tool	KA-306
Pony Rod Wrench	KP-276 (or KP-277)
Pony Rod Seal Installation Tool	AP-77T (or KP-276)
Valve Insert Installation Tool	AP-77T
Valve Cover Wrench	KP-73
Kerr Valve Seat Tool (Rhino Supply)	250600

Applications and Target Industries

KERR KP-3300 series pumps are widely used in various industries due to their diverse configurations and robust design.

KERR KP-3300PT (Piston Pump): This model is primarily targeted at the Horizontal Directional Drilling (HDD) market. Horizontal directional drilling typically involves pumping drilling mud containing solids like bentonite, and piston pumps are preferred due to their better adaptability to abrasive fluids. The multiple piston and liner material options (e.g., ceramic, carbide-coated) offered by the KP-3300PT further enhance its suitability in this field.

KERR KP-3300BC (Plunger Pump): Used in applications such as oil pipeline transportation, water injection, saltwater treatment, and chemical industries.

KERR KP-3300HP (High-Pressure Plunger Pump): Suitable for water jet cleaning, hydrostatic testing, specific types of high-pressure chemical injection, and other specialized industrial cleaning or cutting applications.

Target Industries: The target industries for the KP-3300 series mainly include: Oil and Gas (upstream, midstream operations), Construction (especially horizontal directional drilling), Mining, Chemical Processing, General Manufacturing (high-pressure cleaning, testing, process pumping), and Municipal Services.

0e98c523164248c79b83b0e1c10ff999