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Nib co chemtrol true union ball check valve
NIBCO CHEMTROL True Union Ball Check Valve
1/2" CPVC Check Valve with Threaded Ends
New, Price from U.S.Plastics is $62.75 ea.
Not spring loaded but the design insures free movement of the ball. Ball supported by a system of guide ribs to give full flow with minimum turbulence and chatter. Union connections for easy access to valve components. Requires only inches of head pressure to seal and open. All plastic construction which eliminates corrosion. FKM seals, O-rings and ball seats. Equally effective in checking backflow from head presure on the discharge or suction side of pump. Seating head 1/2" thru 3/4" 6-7 psi; 1" thru 2" 4-5 psi; 3" size 3-4 psi. 2 pound positive back pressure. Both types are NSF listed. PVC - 140 F. CPVC 210 F.
