• 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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Item #

Pipe Size

Inside Diameter

Length F/F

H

W

Max. Work Pressure

CPI-2 N/A 2 N/A 1 1/4 in N/A 6 in N/A 1/2 in N/A 1 7/8 in N/A 125 psi
CPI-3 N/A 3 N/A 2 1/4 in N/A 7 1/2 in N/A 1/2 in N/A 2 7/8 in N/A 125 psi
CPI-4 N/A 4 N/A 3 in N/A 13 in N/A 3/4 in N/A 3 7/8 in N/A 100 psi
CPI-5 N/A 5 N/A 4 in N/A 14 1/2 in N/A 3/4 in N/A 4 7/8 in N/A 75 psi
CPI-6 N/A 6 N/A 5 in N/A 16 in N/A 3/4 in N/A 5 7/8 in N/A 75 psi
CPI-8 N/A 8 N/A 6 5/8 in N/A 18 in N/A 3/4 in N/A 7 5/8 in N/A 75 psi
CPI-10 N/A 10 N/A 8 5/8 in N/A 20 in N/A 3/4 in N/A 9 5/8 in N/A 50 psi
CPI-12 N/A 12 N/A 10 in N/A 21 in N/A 1 in N/A 11 7/8 in N/A 50 psi
CPI-14 N/A 14 N/A 11 1/2 in N/A 22 in N/A 1 in N/A 12 3/4 in N/A 50 psi
CPI-16 N/A 16 N/A 13 1/2 in N/A 24 in N/A 1 in N/A 14 3/4 in N/A 50 psi
CPI-18 N/A 18 N/A 15 1/4 in N/A 27 in N/A 1 in N/A 16 3/4 in N/A 25 psi
CPI-20 N/A 20 N/A 17 in N/A 30 in N/A 1 3/16 in N/A 18 3/4 in N/A 25 psi
CPI-24 N/A 24 N/A 20 1/2 in N/A 33 in N/A 1 3/8 in N/A 22 3/4 in N/A 25 psi
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