Pentair MYERS APLEX RO-174 Manual

NOTE! To the installer: Please make sure you provide this manual to the owner of the equipment or to the responsible
party who maintains the system.
MODELS
MA-95L, MA-95M, MA-120L, MA-120L-HD, MA-120M,
SC-170, SC-170L, SC-170H, SC-170DD,
RO-174, RO-185
TRIPLEX PUMPS
INSTALLATION AND SERVICE MANUAL
Part # AP-03-104 | © 2014 Pentair Ltd. | 01/14/14

2 3
Engineering Data
MA-95L............................................................. 3
MA-95M............................................................ 4
MA-120L........................................................... 5
MA-120L-HD ..................................................... 6
MA-120M.......................................................... 7
SC-170L ........................................................... 8
SC-170 ............................................................. 9
SC-170H......................................................... 10
SC-170DD....................................................... 11
RO-174........................................................... 12
RO-185........................................................... 13
Dimensional Data ...........................................14–15
Installation, Operation, Lubrication, Maintenance
and Storage Instructions....................................... 16
Safety ............................................................. 16
Storage............................................................ 16
Pump Location and Piping Design...................... 16
Suction Piping ............................................16–17
Acceleration Head ............................................ 17
Discharge Piping .........................................17–18
Bypass Piping .................................................. 18
Lubrication ...................................................... 18
V-Belt Drive ............................................... 18, 20
Suggested Piping System for Plunger Pumps ...... 19
Direction of Rotation......................................... 20
Automatic (Safety) Shutdowns........................... 20
Crankshaft Assembly............................................ 20
General ........................................................... 20
Tapered Roller Bearings ...............................20–21
Cup Installation................................................ 21
Installing Crankshaft ............................................ 21
Shim Adjustment of Tapered Roller Bearings....... 21
Installation of Crankshaft Oil Seal ...................... 21
Lube Oil Pump Assembly .............................21–22
Disassembly..................................................... 22
Connecting Rod, Crosshead, Extension Rod, Crosshead
Pin and Wiper Box Assembly/Disassembly .............. 22
General ........................................................... 22
Installing Wrist Pin Bushings............................. 23
Pinning the Crosshead ...................................... 23
Order of Assembly ............................................ 23
Precision Crankpin (Crankthrow) Bearings......23–24
Oil Scoop ........................................................ 24
Wiper Box Assembly............................................. 24
General ........................................................... 24
“Poly Pak” Seal ............................................... 24
Mechanical Oil Seal.......................................... 24
Inserting the Plunger ........................................ 25
Stuffing Box, Packing and Plunger Assemblies ....... 25
General ........................................................... 25
Spring Loaded Packing ..................................... 25
J-Style Stuffing Box & Plunger Assembly
(Styles 838 and 858) ....................................... 26
Inserting the Plunger ........................................ 26
Installing the Gland .......................................... 26
Installing the Stuffing Box................................. 27
Connecting the Plunger..................................... 27
Packing ........................................................... 27
Plungers.......................................................... 27
Disc Valve Systems and Abrasion Resistant ............ 28
General ........................................................... 28
Disc Valve and Abrasion Resistant Valve
Construction .................................................... 28
Setting the Valve Seat....................................... 28
Installing O-Rings, Abrasion Resistant Spring
and Cage ......................................................... 29
Installing Disc, Spring, Disc Valves and Stem...... 29
Valve Spring Options......................................... 29
Valve Disc Options............................................ 29
Pulling the Valve Seat ....................................... 29
Salvage of Worn Seats....................................... 30
Other Pump Brands .......................................... 30
Trouble Location and Remedy ..........................30–32
Parts Lists......................................................33–42
Warranty ............................................................. 44

3
MA-95L ENGINEERING DATA
Power End
Model Triplex Pump MA-95L
Maximum Input HP at Speed 95 at 450 rpm
Rated Continuous Plunger Load 6,259 lbs.
Stroke 4"
Maximum Rated Continuous Speed 450 rpm
Normal Continuous Speed Range 150 to 420 rpm
Minimum Speed 100 rpm
Oil Capacity 18 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 5-3/4" x 6-3/16"
Crankshaft Ductile Iron
Crankshaft Diameters:
At Drive Extension
At Tapered Roller Bearings
At Crankpin Bearings, Diameter x Length
3.750/3.749"
4"
4" x 3"
Crosshead (Wrist) Pin, Case-Hardened and Ground AISI 8620
Wrist Pin Bushing, SAE 660, Diameter x Width 4" x 3"
Main Bearings, Tapered Roller Timken
Center Bearings,
Two, Precision
Steel Backed,
Babbitt-Lined
Crankpin Bearings,
Precision Automotive
Steel Backed,
Babbitt-Lined
Extension (Pony) Rod:
Diameter
Material
2"
316 S.S.
Connecting Rod, Automotive Type Ductile Iron
Average Crosshead Speed:
At 450 rpm
At 150 rpm
300 fpm
100 fpm
Minimum Life Expectancy, Main Bearings, L10 60,000+hr
Liquid End
Plunger Size Range, Diameter 2-3/8" thru 3-1/2"
Maximum Continuous Working Pressure 1,264 psi
Hydrostatic Test:
Discharge
Suction
1,896 psi
425 psi
Discharge Connection Size 2-1/2" NPTF
Suction Connection Size 5" NPTF
Maximum Working Pressure Suction Manifold 275 psi
Available Liquid End Materials, ASTM:
Nickel Aluminum Bronze
Forged Steel Block
Ductile Iron
Stainless Steel
B148-C955
A105
A536 80-55-06
Various Grades
MA-95L ENGINEERING DATA
Liquid End (Continued)
Plunger Type Rokide®Stainless Steel:
Chromium Oxide-Coated 316 S.S.
Stuffing Boxes, Field-Removable and Replaceable:
Aluminum Bronze
Stainless Steel, Hardened
Carbon Steel
B148-C955
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
Seals, Stuffing Boxes, Valve Covers, Cylinder Heads Buna-N
Studs, Material,
ASTM
A193 Grade B7,
Cadmium Plated
Available Valve Types:
Optional, Hardened and Lapped 17-4PH S.S.
Valve Spring Material Inconel®
Valve Seat, Liquid Passage Areas 6.26 sq. in.
Average Liquid Velocity, with 3-1/2" Plungers:
At 450 Crankshaft rpm 8.45 fps
Average Liquid Velocity, 3-1/2" Plungers at 450 rpm:
Suction Manifold
Discharge Manifold
3.60 fps
17.02 fps
General
Overall Dimensions:
Length
Width
Height
50-1/4"
38-1/8"
19-5/8"
Approximate Weights:
With Aluminum Bronze Liquid End
With Forged Steel Liquid End
1,725 lbs.
1,860 lbs.

4 5
MA-95M ENGINEERING DATA
Power End
Model Triplex Pump MA-95M
Maximum Input HP at Speed 95 at 450 rpm
Rated Continuous Plunger Load 6,259 lbs.
Stroke 4"
Maximum Rated Continuous Speed 450 rpm
Normal Continuous Speed Range 150 to 420 rpm
Minimum Speed 100 rpm
Oil Capacity 18 U.S. Quarts
Viscosity, S.S.U. at 210ºF 70 to 84
Power End Oiling System Splash
Power Frame, One Piece Cast Iron
Crosshead, Full Cylindrical Cast Iron
Crosshead, Diameter x Length 5-3/4" x 6-3/16"
Crankshaft Ductile Iron
Crankshaft Diameters:
At Drive Extension
At Tapered Roller Bearings
At Crankpin Bearings, Diameter x Length
3.750/3.749"
4"
4" x 3"
Crosshead (Wrist) Pin, Case-Hardened and Ground AISI 8620
Wrist Pin Bushing, SAE 660, Diameter x Width 2" x 3"
Main Bearings, Tapered Roller Timken
Crankpin Bearings,
Precision Automotive
Steel Backed,
Babbitt-Lined
Extension (Pony) Rod:
Diameter
Material
2"
17-4PH S.S.
Connecting Rod, Automotive Type Ductile Iron
Average Crosshead Speed:
At 450 rpm 318 fpm
Minimum Life Expectancy, Main Bearings, L10 45,000+hr
Liquid End
Plunger Size Range, Diameter 1-1/2" Thru 2-1/4"
Maximum Continuous Working Pressure 3,250 psi
Hydrostatic Test:
Discharge
Suction
5,400 psi
425 psi
Discharge Connection Size 2" ANSI 1500RF
Suction Connection Size 3" ANSI 150RF
Available Liquid End Materials, ASTM:
Nickel Aluminum Bronze
Forged Steel Block
B148-C955
A105
Plunger Type Rokide®Stainless Steel:
Chromium Oxide-Coated 316 S.S.
Stuffing Boxes, Field-Removable and Replaceable:
Aluminum Bronze
Carbon Steel
B148-C955
1020
MA-95M ENGINEERING DATA
Liquid End (Continued)
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
Seals, Stuffing Boxes, Valve Covers, Cylinder Heads Buna-N
Studs, Material,
ASTM
A193 Grade B7,
Cadmium Plated
Available Valve Types:
Regularly Furnished, Acetal Resin
Optional, Hardened and Lapped
Delrin®
17-4PH S.S.
Valve Spring Material Inconel®
Valve Seat, Liquid Passage Areas 2.35 sq. in.
Average Liquid Velocity, with 2-1/4" Plungers:
At 450 Crankshaft rpm 8.97 fps
Average Liquid Velocity, 2-1/4" Plungers at 450 rpm:
Suction Manifold
Discharge Manifold
4.47 fps
10.09 fps
General
Overall Dimensions:
Length
Width
Height
48-3/4"
42-5/8"
19-5/8"
Approximate Weights:
With Aluminum Bronze Liquid End
With Ductile Iron Liquid End
With Forged Steel Liquid End
1,950 lbs.
1,875 lbs.
2,085 lbs.

5
MA-120L ENGINEERING DATA
Power End
Model Triplex Pump MA-120L
Maximum Input HP at Speed 120 at 450 rpm
Rated Continuous Plunger Load 7,452 lbs.
Stroke 4-1/4"
Maximum Rated Continuous Speed 450 rpm
Normal Continuous Speed Range 150 to 420 rpm
Minimum Speed 100 rpm
Oil Capacity 18 U.S. Quarts
Viscosity, S.S.U. at 210ºF 70 to 84
Power End
Oiling System
Full Pressure
Lubrication
Power Frame, One Piece Cast Iron
Crosshead, Full Cylindrical Cast Iron
Crosshead, Diameter x Length 5-3/4" x 6-3/16"
Crankshaft Ductile Iron
Crankshaft Diameters:
At Drive Extension
At Tapered Roller Bearings
At Crankpin Bearings, Diameter x Length
3.750/3.749"
4"
4" x 3"
Crosshead (Wrist) Pin, Case-Hardened and Ground AISI 8620
Wrist Pin Bushing, SAE 660, Diameter x Width 4" x 3"
Main Bearings, Tapered Roller Timken
Crankpin Bearings,
Precision Automotive
Steel Backed,
Babbitt-Lined
Extension (Pony) Rod:
Diameter
Material
2"
316 S.S.
Connecting Rod, Automotive Type Ductile Iron
Average Crosshead Speed:
At 450 rpm
At 150 rpm
318 fpm
106 fpm
Minimum Life Expectancy, Main Bearings, L10 60,000+hr
Liquid End
Plunger Size Range, Diameter 2-3/8" Thru 3-1/2"
Maximum Continuous Working Pressure 1,682 psi
Hydrostatic Test:
Discharge
Suction
2,523 psi
425 psi
Discharge Connection Size 2-1/2" ANSI 900 LF
Suction Connection Size 5" ANSI 150 FF
Maximum Working Pressure Suction Manifold 275 psi
Available Liquid End Materials, ASTM:
Nickel Aluminum Bronze
Forged Steel Block
Ductile Iron
Stainless Steel
B148-C955
A105
A536 80-55-06
Various Grades
MA-120L ENGINEERING DATA
Liquid End (Continued)
Plunger Type Rokide®Stainless Steel:
Chromium Oxide-Coated 316 S.S.
Stuffing Boxes, Field-Removable and Replaceable:
Aluminum Bronze
Stainless Steel, Hardened
Carbon Steel
B148-C955
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
Seals, Stuffing Boxes, Valve Covers, Cylinder Heads Buna-N
Studs, Material,
ASTM
A193 Grade B7,
Cadmium Plated
Available Valve Types:
Standard, Acetal Resin
Optional, Hardened and Lapped
Delrin®
17-4PH S.S.
Valve Spring Material Inconel®
Valve Seat, Liquid Passage Areas 6.26 sq. in.
Average Liquid Velocity, with 3-1/2" Plungers:
At 450 Crankshaft rpm 8.45 fps
Average Liquid Velocity, 3-1/2" Plungers at 450 rpm:
Suction Manifold
Discharge Manifold
3.60 fps
17.02 fps
General
Overall Dimensions:
Length
Width
Height
49"
42-5/8"
19-1/16"
Approximate Weights:
With Aluminum Bronze Liquid End
With Forged Steel Liquid End
1,725 lbs.
1,860 lbs.