Lined Valves
Accessories
Fig. C202 (Formerly 073) Piston Check Valve

Tufline lined piston check valves feature a spring loaded plug to provide
an automatic seal against backflow. It is especially well suited for low
pressure applications and can be installed in any orientation.

PFA Lined Sizes 1/2" thru 6" No Back Pressure to Seat Universal Installation Orientation ANSI Class 150
Materials of construction Body PFA lined ductile iron Piston PTFE Piston holder PTFE Seat ring PTFE Spring PTFE lined stainless steel Bolting B7 carbon steel Other lining materials available upon request.
Dimensions (inches) Size A B C D N O P Wt. lbs. Opening Pressure Horizontal Position PSI Opening Pressure Vertical Position PSI Opening Pressure Vertical Position PSI Cv Values 1/2 3.50 1.57 5.12 0.59 4 0.62 2.36 9 0.54 0.58 0.16 6.20 3/4 3.86 1.97 5.91 0.79 4 0.62 2.72 11 0.54 0.58 0.16 8.66 1 4.25 2.01 6.00 0.91 4 0.62 3.11 11 0.54 0.58 0.16 17.55 1 1/2 5.00 2.87 7.00 1.42 4 0.62 3.86 23 0.70 0.74 0.65 29.84 2 5.98 3.62 8.00 1.85 4 0.75 4.72 29 0.61 0.67 0.55 44.46 3 7.52 4.92 9.50 3.07 4 0.75 5.98 68 0.80 1.04 0.55 101.21 4 9.02 6.18 11.50 3.74 8 0.75 7.50 103 0.80 1.00 0.61 139.46 6 10.98 8.27 14.00 5.71 8 0.88 9.49 189 0.58 0.81 0.35 161.46 N: number of bolt holes O: diameter of bolt holes P: diameter of bolt circle