5
MA-25L ENGINEERING DATA
Power End
Model Triplex Pump MA-25L
Maximum Input HP at Speed 25 at 600 rpm
Rated Continuous Plunger Load 2,475 lbs.
Stroke 2"
Maximum Rated Continuous Speed 600 rpm
Normal Continuous Speed Range 150 to 500 rpm
Minimum Speed 100 rpm
Oil Capacity 5 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 3-1/4" x 3-5/8"
Crankshaft Ductile Iron
Crankshaft Diameters:
At Tapered Roller Bearing
At Crankpin Bearings, Diameter x Length
3.15"
2.250" x 1.625"
Crosshead (Wrist) Pin, Case-Hardened and Ground AISI 8620
Main Bearings, Tapered Roller Timken
Crankpin Bearings,
Precision Automotive
Steel Backed,
Babbitt-Lined
Extension (Pony) Rod:
Integral with Plungers, 2-1/4" thru 1-7/8" sizes 316 S.S.
Connecting Rod, Automotive Type Ductile Iron
Average Crosshead Speed:
At 600 rpm 150 fpm
Minimum Life Expectancy, Main Bearings, L
10
50,000+hr
Liquid End
Plunger Size Range, Diameter 2" thru 2-1/4"
Maximum Continuous Working Pressure 789 psi
Hydrostatic Test 1184 psi
Discharge Connection Size 1-1/2" NPTF
Suction Connection Size 2-1/2" NPTF
Available Liquid End Materials, ASTM:
Ductile Iron
Carbon Steel
A536 80-55-06
A516 Gr. 70 or 105
MA-25L ENGINEERING DATA
Liquid End (Continued)
Plunger Type Rokide
®
Stainless Steel:
Chromium Oxide-Coated 316 S.S.
Stuffing Boxes, Field-Removable and Replaceable:
Carbon Steel 1020
Packing Types Available:
Gland-loaded, Nonadjustable
Spring-loaded, Cup-Type
Spring-loaded, Braided Teflon
®
& Kevlar
®
Spring-loaded, Garlock
Style 838
Style 120X
Style 140/141
Style 8921K
Valve Cover and Cylinder Head Plugs 416 S.S.
Retainer Plates, Steel, ASTM A36
Seals, Stuffing Boxes, Valve Covers, Cylinder Heads Buna-N
Bolting, High Strength, Heat Treated Alloy Steel
Available Valve Types:
Standard, Acetal Resin
Optional, Hardened and Lapped
Double Stem-Guided
Delrin
®
17-4PH S.S.
17-4PH S.S.
Valve Seat, Liquid Passage Areas:
Plate (Disc) Valves, (Delrin
®
or S.S.)
Double Stem-Guided Valve
1.400 sq. in.
.958 sq. in.
Average Liquid Velocity with 2-1/4" at 600 rpm:
Thru Plate Valves
Thru Dual Stem Guided Valves
Thru Suction Manifold
Thru Discharge Manifold
6.5 fps
9.8 fps
4.5 fps
9.7 fps
General
Overall Dimensions:
Length
Width
Height
30-1/2"
18-5/8"
12-3/8"
Approximate Weights:
With Ductile Iron Liquid End 440 lbs.
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