7
MA-40L ENGINEERING DATA
Power End
Model Triplex Pump MA-40L
Maximum Input HP at Speed 40 at 550 rpm
Rated Continuous Plunger Load 3,456 lbs.
Stroke 2-1/2"
Maximum Rated Continuous Speed 550 rpm
Normal Continuous Speed Range 100 rpm
Minimum Speed 100 rpm
Oil Capacity 8 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 4" x 4-1/2"
Crankshaft Ductile Iron
Crankshaft Diameters:
At Drive Extension
At Tapered Roller Bearings
At Crankpin Bearings, Diameter x Length
2.500/2.499"
3.35"
2.750" x 2.000"
Crosshead (Wrist) Pin, Case-Hardened and Ground AISI 8620
Wrist Pin Bushing, SAE 660, Diameter x Width 1-5/16" x 2"
Main Bearings, Tapered Roller Timken
Crankpin Bearings,
Precision Automotive
Steel Backed,
Babbitt-Lined
Extension (Pony) Rod:
Integral with Plunger 316 S.S.
Extension Rod Diameter 1-1/4"
Connecting Rod, Automotive Type Ductile Iron
Average Crosshead Speed:
At 550 rpm 252 fpm
Minimum Life Expectancy, Main Bearings, L
10
100,000+hr
Liquid End
Plunger Size Range, Diameter 2-3/4" thru 2-1/4"
Maximum Continuous Working Pressure 779 psi
Hydrostatic Test 1200 psi
Discharge Connection Size 2" NPTF
Suction Connection Size 3" NPTF
Available Liquid End Materials, ASTM:
Ductile Iron
Steel
Stainless Steel
A536 80-55-06
Forged A105
Forged 2205 Duplx.
MA-40L ENGINEERING DATA
Liquid End (Continued)
Plunger Type Rokide
®
Stainless Steel:
Chromium Oxide-Coated 316 S.S.
Stuffing Boxes, Field-Removable and Replaceable:
Stainless Steel, Hardened
Carbon Steel
17-4PH
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 1020 or 316 S.S.
Retainer Plates, Ductile Iron, ASTM A536 80-55-06
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
Abrasion Resistant
Delrin
®
17-4PH S.S.
17-4PH S.S.
Valve Spring Material Inconel
®
Valve Seat, Liquid Passage Areas:
Plate (Disc) Valves, (Delrin
®
or S.S.)
Abrasion Resistant
2.3 sq. in.
1.5 sq. in.
Average Liquid Velocity thru Seat with 2-3/4" Plungers
& Plate Valves:
At 550 Crankshaft rpm
At 350 Crankshaft rpm
7.3 fps
4.6 fps
Average Liquid Velocity thru Seat with 2-3/4" Plungers &
Abrasion Resistant Valves:
At 550 Crankshaft rpm
At 350 Crankshaft rpm
12.3 fps
7.8 fps
Average Liquid Velocity with 2-3/4" Plungers at 550 rpm:
Thru Suction Manifold
Thru Discharge Manifold
5.2 fps
14.1 fps
General
Overall Dimensions:
Length
Width
Height
36-1/4"
26-1/4"
14-3/4"
Approximate Weights:
With Ductile Iron Liquid End
With Forged Steel Liquid End
730 lbs.
775 lbs.
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