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CVS Series 50 Chemical 
Injection Pump 

 

Introduction 

The CVS Series 50 Chemical Injection Pump is a 
positive displacement pump that uses a molded 
diaphragm to drive a piston through packing in 
the fluid end. The pump capabilities cover a 
broad range of applications due to the ability to 
achieve high discharge pressures (up to 12000 
psi) and a wide volume range. High operating 
efficiency is met by the horizontal plunger and 
vertical valve check arrangement. The standard 
fluid end is ductile iron with stainless steel trim 
and plunger.  The pump body casting and frame 
are high strength aluminum to make it light 
weight. Integrated priming valve enables the 
operator to easily check operation of the pump.  
All CVS series 50 chemical injection pump 
models are furnished with a micro switch that 
pilots a high volume pneumatic valve. Operating 
mechanism is gasket sealed to protect from the 
environmental elements.  Safety valve provides 
for protection on case of accidental 
overpressure of the main diaphragm. A grease 
jack for lubricating the plunger and packing ring, 
along with adjustable packing equipped with 
lantern ring insure long life.  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Applications 

 

Methanol and alcohol injection in gas 
systems to prevent freezing 

 

Water Treatment 

 

The introduction of De-emulsifiers, 
corrosion inhibitors, De-scaling agents 

 

High and low pressure lubrication 
systems 

 

High pressure addition of fluid 
compounds in chemical processing and 
blending 

 

Injection of Surfactant (soap) in wells 
with high water content 

 

 

 

Instruction Manual 

Head Office             

3900 101 Street 
Edmonton, Alberta   
T6E 0A5                                   
Canada                  
Office: (780) 437-3055 

  

 

 

  

 

     

  

 

             

 

                     

                       

  

 

      

 

Website: 

www.cvs-controls.com

   

Email: 

[email protected]

  

 

 

 

Figure 1: CVS Series 50 Chemical Injection Pump 

Calgary Sales Office

 

205,2323 – 32 Avenue 
NE Calgary, Alberta             
T2E 6Z3                     
Canada                       
Office: (403) 250-1416 

      

 

 

Summary of Contents for 50-1-DMV

Page 1: ...ts a high volume pneumatic valve Operating mechanism is gasket sealed to protect from the environmental elements Safety valve provides for protection on case of accidental overpressure of the main dia...

Page 2: ...0123 Connect the gas supply line considering the pressure required of the pump If the gas exceeds 50 psi the supply should be equipped with a regulator to reduce the pressure to 50 psi Lubrication A...

Page 3: ...er tightened This may score the plunger and decrease the lifespan of the packing CVS chemical pumps used for alcohol or methanol injection must be fitted with Buna N o rings Pumps used for most chemic...

Page 4: ...d If the pump is running but not pumping the injection head could be air locked Open the priming valve and bleed fluid until no bubbles are present If still not pumping the bottom seat of the injectio...

Page 5: ...7 740 748 756 779 802 854 872 897 937 984 1017 1057 1090 1122 1 4 LongStroke 280 281 282 284 285 286 289 292 295 297 300 303 306 318 330 356 368 380 404 428 454 476 500 522 3 8 ShortStroke 355 356 356...

Page 6: ...CVS Series 50 Chemical Injection Pump Assembly 6...

Page 7: ...A 2489 Exhaust Valve 1 22 CVS A 2970 Wing Screw 1 23 CVS A 4452 3 8 Hex Bolt 4 24 CVS B 0002 Series 50 Diaphragm Disc 1 25 CVS B 0003 Series 50 Thrust Rod 1 26 CVS B 0004 Series 50 Cover Body 1 27 CVS...

Page 8: ...acking Nut 1 1 4 1 7 CVS A 0404 Series 50 1 1 4 Plunger Packing Gland 1 8 CVS A 0405 Packing 1 9 CVS A 0406 Series 50 1 1 4 Adapter 1 10 CVS A 0408 Series 50 1 1 4 Plunger 1 11 CVS A 0521 Gasket 1 12...

Page 9: ...ackingGland 1 4 1 10a CVS A 0957 Series50 PlungerPackingGland 3 8 1 10b CVS A 1219 Series50 PlungerPackingGland 1 2 1 10c CVS A 2769 Series50 PlungerPackingGland 3 4 1 10d CVS A 0043 Series50 PlungerP...

Page 10: ...rvice Maximum Operating Speed 1 1 4 Plunger Long Stroke 1 Plunger Long Stroke 1 1 4 Plunger Short Stroke 3 4 Plunger Long Stroke 1 Plunger Short Stroke 3 4 Plunger Short Stroke 1 2 Stroke Length 1 2 P...

Page 11: ...Dimensions Inches 11...

Page 12: ...on included in this publication is presented for informational purposes only CVS Controls Ltd reserves the right to modify or change and improve design process and specifications without written notic...

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