The Myers Aplex Triplex and Quintiplex piston and plunger pumps are designed for high-pressure pumping. They are used in industry, in horizontal directional drilling (HDD). Suitable for installations of HDD Vermeer, Ditch WItch, TRACTO -TECHNIK, Universal HDD, Prime Drilling, Herrenknecht, Astec Underground, etc.
The MA series and SC series are available in many alloys (ductile iron, aluminum bronze, carbon steels and various stainless steels) and are suitable for use in your specific field.
The pumps of this SC series have the same design features as the pumps of the MA series, have a more compact design of a smaller size. Available in many configurations that meet Hydraulic Institute Standards and API674 standards.

151-012013-405 Nut
Lock Nut - S.S. 151-012013-405..
151-516018-405 Nut
Lock Nut - S.S. 151-516018-405..
154-012087-244 Plug 0.125"
Aplex 200 GPM Bentonite Pump washer..
154-034127-244 Mud Pump Washer 0.75"
3/4" Lockwasher, Spring Medium 154-034127-244..
154-038068-244 Mud Pump Washer 3/8"
Aplex 70 GPM 36x50 SII Bentonite Pump Washer..
154-058108-244 Mud Pump Washer 0.625"
Aplex 200 GPM Bentonite Pump Crankshaft Washer..
154-516059-244 Mud Pump Washer 
Aplex 50 GPM Pump washer 24x40A, 24x40 SII, 36x50 SII..
156-012087-999 Mud Pump Washer 0.5"
1/2" Stat-O-Seal Washer (Before Jan. 2015) 156-012087-999..
156-038068-999 Aplex SC-115L,SC-170L Pump Washer
Aplex 150 GPM Bentonite Pump washer..
156-516062-999 Mud Pump Washer 0.3125”
5/16” Washer “Stat-O-Seal” 156-516062-999..
161-038018-451 3/8 "x 1/8" Hex Pipe
Aplex 200 GPM Bentonite Pump Crankshaft Bearing..
16654A006 Mud Pump Bolt
Aplex 150 GPM 80x100A Bentonite Pump Piston Mounting Bolt..
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APLEX (PENTAIR) mud pumps SC-series