17
RO-23 ENGINEERING DATA
Power End
Model Triplex Pump RO-23
Maximum Input HP at Speed 20 at 650 rpm
Rated Continuous Plunger Load 2,433 lbs.
Stroke 1-1/2"
Maximum Rated Continuous Speed 650 rpm
Normal Continuous Speed Range 350 to 600 rpm
Minimum Speed 100 rpm
Oil Capacity 2 U.S. Quarts
Viscosity, S.S.U. at 210ºF 70 to 84
Power End Oiling System Splash & Scoop
Power Frame, One Piece Cast Iron
Crosshead, Full Cylindrical Cast Iron
Crosshead, Diameter x Length 2-5/8" x 2-7/8"
Crankshaft Ductile Iron
Crankshaft Diameters:
At Drive Extension
At Tapered Roller Bearings
At Crankpin Bearings, Diameter x Length
1.750"
2.167"
1.750" x 1.063"
Crosshead (Wrist) Pin, Case-Hardened and Ground AISI 8620
Main Bearings, Tapered Roller Timken
Crankpin Bearings, Precision Automotive Babbitt-Lined
Extension (Pony) Rod:
Integral with Plungers 316 S.S.
Connecting Rod, Automotive Type Ductile Iron
Average Crosshead Speed:
At 600 rpm
At 450 rpm
150 fpm
112 fpm
Minimum Life Expectancy, Main Bearings, L
10
58,000+hr
Liquid End
Plunger Size Range, Diameter 1-5/8" thru 3/4"
Maximum Continuous Working Pressure 2,448 psi
Hydrostatic Test 3,750 psi
Discharge Connection Size 1" NPTF
Suction Connection Size 2" NPTF
Available Liquid End Materials, ASTM:
Nickel Aluminum Bronze
Stainless Steel Block
Stainless Steel Block
B148-C955
2205 Duplex S.S.
316 S.S.
RO-23 ENGINEERING DATA
Liquid End (Continued)
Plunger Type Rokide
®
Stainless Steel:
Chromium Oxide-Coated 316 S.S.
Stuffing Boxes, Field-Removable and Replaceable Stainless Steel
Gland,
Stuffing Box
Nickel Aluminum
Bronze
Packing Types Available:
Spring-loaded, Cup-Type
Spring-loaded, Garlock
Style 120X
Style 8921K
Valve Cover and Cylinder Head Plugs 316 S.S.
Retainer Plates, Steel, ASTM A36
Seals, Stuffing Boxes, Valve Covers, Cylinder Heads Buna-N
Bolting, High Strength, Heat Treated Alloy Steel
Valve Type, Double Stem-Guided l7-4PH S.S.
Valve Spring Material Inconel
®
Valve Seat, Liquid Passage Areas .573 sq. in.
Average Liquid Velocity with 1-5/8" Plungers,
Stem-Guided Valves:
At 600 Crankshaft rpm
At 450 Crankshaft rpm
9.04 fps
6.78 fps
Average Liquid Velocity at 600 rpm:
Suction Manifold
Discharge Manifold
2.32 fps
10.7 fps
General
Overall Dimensions:
Length
Width
Height
26-1/8"
16-9/16"
10-3/4"
Approximate Weights:
With Nickel Aluminum Bronze Liquid End
With Stainless Steel Liquid End
235 lbs.
240 lbs.
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