Series CPI In-Line

Manufactured with an integral full-faced rubber flange connection, CPI valves are mounted between existing pipe flanges thereby eliminating the need for a valve body.

  • Quiet operation
  • Zero maintenance
  • Design prevents backflow
  • Will seal around solids
  • Designed to withstand wear
  • Tough enough for abrasive slurries

The Series CPI In-Line Check Valve is designed to be efficient, quiet and tough. It requires no external power sources, thereby reducing operation costs. The valve’s simple design means there are no moving mechanical parts to break down or jam reducing maintenance costs.

CPI Valves easily handle corrosive or abrasive materials such as raw sewage, sludges or slurries. Their flexible design allows solids to pass through unhindered and can even seal around solids trapped in the valve.

Series CPI In-Line Check Valves are versatile and can be installed either horizontally or vertically. Drilling is available in all flange standards.

When placing your order, please indicate sleeve material by appending elastomer abbreviation (CR, NR, etc) to the model name. IE: Series CPI-CR

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pipe size inside diameter length FF h w max work pressure
2 1 1/4" 6" 1/2" 1 7/8" 125 psi
3 2 1/4" 7 1/2" 1/2" 2 7/8" 125 psi
4 3" 13" 3/4" 3 7/8" 100 psi
5 4" 14 1/2" 3/4" 4 7/8" 75 psi
6 5" 16" 3/4" 5 7/8" 75 psi
8 6 5/8" 18" 3/4" 7 5/8" 75 psi
10 8 5/8" 20" 3/4" 9 5/8" 50 psi
12 10" 21" 1" 11 7/8" 50 psi
14 11 1/2" 22" 1" 12 3/4" 50 psi
16 13 1/2" 24" 1" 14 3/4" 50 psi
18 15 1/4" 27" 1" 16 3/4" 25 psi
20 17" 30" 1 3/16" 18 3/4" 25 psi
24 20 1/2" 33" 1 3/8" 22 3/4" 25 psi

Sewer Interceptors – Wet Wells – Mine Tailing Systems – Dredging – Scrubber Systems – Outfall Lines – Wet/Dry Wells

Manufactured with an integral full-faced rubber flange connection, CPI valves are mounted between existing pipe flanges thereby eliminating the need for a valve body.

The heart of the Elasto-Valve Series CPI Backflow Preventer is a fabric reinforced rubber “duckbill” sleeve manufactured with top quality materials. This flexible sleeve provides maximum flow with a minimum pressure drop across the valve at all times.

Unlike conventional check valves – which require frequent maintenance to replace worn seats, hinge pins, balls or flappers – there is little or no maintenance with CPI Valves.

Available in a variety of styles and reinforced elastomers, the Elasto-Valve Series CPI Backflow Preventer can be adapted to almost any application.

Ethylene Propylene Rubber (EPDM)
Most effective for applications involving water, steam or dilutedacids.

Viton™ (FKM)
Resists solvents, halogenated hydrocarbons, oxygen, weather,ozone, oils and chemicals.

Buna N (NBR)
Resistant to kerosene, moderate chemicals, fats, oils, grease andmany hydrocarbons.

Natural Rubber (NR)
Good abrasion resistance, tensile strength and resiliency. Alsosuitable when dealing with organic acids, alcohols, ketones andmost moderate chemicals.

Hypalon™ (CSM)
Resists strong acids and bases, ozone, weathering, heat andoxidizing chemicals.

Butyl (CIIR)
Good resistance to animal and vegetable fats, strong andoxidizing chemicals, oils, heat and greases.

Neoprene (CR)
Generally resistant to oil and grease, moderate chemicals, fats,many hydrocarbons and ozone. Resistant to barnacle growth.

All EVR products are guaranteed for one full year against defects resulting from faulty workmanship or materials. If any such product is found to be defective by reason of faulty workmanship or materials, upon written notice and return of the product, the defective product will be replaced by us free of charge, including the shipping charges for the replacement product. Claims for labour costs and other expenses required to replace such defective product, or to repair damage resulting from the use thereof will not be allowed by us. Our liability is limited to the price paid for the defective product. EVR Products shall not be bound by any warranty other than the above set forth unless such warranty shall be in writing. This literature is published in good faith and is believed to be reliable, however, EVR Products does not represent and/or warrant in any manner the above information and suggestions contained in this brochure. Data presented is the result of laboratory tests and field experience.