NIBCO® Chemtrol® TruUnion Ball Check Valves
NIBCO® Chemtrol® TruUnion Ball Check Valves

NIBCO® Chemtrol® TruUnion Ball Check Valves

The Chemtrol® True Union ball check valve stops the flow of media in one direction while allowing flow in the opposite direction, with minimum turbulence and chatter while maintaining pump prime. Ball supported by a system of guide ribs to give full flow with minimum turbulence and chatter. Equally effective in checking backflow from head pressure on the discharge or suction side of pump.

  • PVC or CPVC
  • FKM seals, O-rings & ball seats
  • Design insures free movement of the ball
  • 2 pound positive back pressure
  • Requires only inches of head pressure to seal & open
  • Seating head: 6-7 psi (1/2" & 3/4"), 4-5 psi (1"-2") & 3-4 psi (3")
  • Maximum temperature: 140°F (PVC) & 210°F (CPVC)
  • NSF listed
  • Foot valve screens assemblies sold separately
Stock Description Catalog Pg. Price
1/2" PVC Check Valve with Threaded and Socket Ends
18291
1/2" PVC Check Valve with Threaded and Socket Ends
$55.81​/Each
Save 5%2+$53.02/Each
Save 10%4+$50.22/Each
Save 15%12+$47.43/Each
P-418
$55.81​/Each
In Stock
1-1/4" PVC Check Valve with Threaded and Socket Ends
18294
1-1/4" PVC Check Valve with Threaded and Socket Ends
$130.06​/Each
Save 5%2+$123.55/Each
Save 10%4+$117.05/Each
Save 15%12+$110.55/Each
P-418
$130.06​/Each
In Stock
1" PVC Check Valve with Threaded and Socket Ends
18293
1" PVC Check Valve with Threaded and Socket Ends
$77.85​/Each
Save 5%2+$73.95/Each
Save 10%4+$70.06/Each
Save 15%12+$66.17/Each
P-418
$77.85​/Each
In Stock
3/4" PVC Check Valve with Threaded and Socket Ends
18292
3/4" PVC Check Valve with Threaded and Socket Ends
$75.01​/Each
Save 5%2+$71.26/Each
Save 10%4+$67.50/Each
Save 15%12+$63.75/Each
P-418
$75.01​/Each
In Stock
1-1/2" PVC Check Valve with Threaded and Socket Ends
18295
1-1/2" PVC Check Valve with Threaded and Socket Ends
$130.06​/Each
Save 5%2+$123.55/Each
Save 10%4+$117.05/Each
Save 15%12+$110.55/Each
P-418
$130.06​/Each
In Stock
3" PVC Check Valve with Socket Ends
18307
3" PVC Check Valve with Socket Ends
$490.22​/Each
Save 5%2+$465.70/Each
Save 10%4+$441.19/Each
Save 15%12+$416.68/Each
P-418
$490.22​/Each
Special Order
3" PVC Check Valve with Threaded Ends
18297
3" PVC Check Valve with Threaded Ends
$490.22​/Each
Save 5%2+$465.70/Each
Save 10%4+$441.19/Each
Save 15%12+$416.68/Each
P-418
$490.22​/Each
In Stock
2" PVC Check Valve with Threaded and Socket Ends
18296
2" PVC Check Valve with Threaded and Socket Ends
$176.94​/Each
Save 5%2+$168.09/Each
Save 10%4+$159.24/Each
Save 15%12+$150.39/Each
P-418
$176.94​/Each
In Stock
1" CPVC Check Valve with Threaded and Socket Ends
18273
1" CPVC Check Valve with Threaded and Socket Ends
$120.52​/Each
Save 5%2+$114.49/Each
Save 10%4+$108.46/Each
Save 15%12+$102.44/Each
P-418
$120.52​/Each
In Stock
3/4" CPVC Check Valve with Threaded and Socket Ends
18272
3/4" CPVC Check Valve with Threaded and Socket Ends
$101.63​/Each
Save 5%2+$96.54/Each
Save 10%4+$91.46/Each
Save 15%12+$86.38/Each
P-418
$101.63​/Each
In Stock
1/2" CPVC Check Valve with Threaded and Socket Ends
18271
1/2" CPVC Check Valve with Threaded and Socket Ends
$85.55​/Each
Save 5%2+$81.27/Each
Save 10%4+$76.99/Each
Save 15%12+$72.71/Each
P-418
$85.55​/Each
In Stock
1-1/2" CPVC Check Valve with Threaded and Socket Ends
18275
1-1/2" CPVC Check Valve with Threaded and Socket Ends
$206.42​/Each
Save 5%2+$196.09/Each
Save 10%4+$185.77/Each
Save 15%12+$175.45/Each
P-418
$206.42​/Each
In Stock
3" CPVC Check Valve with Socket Ends
18287
3" CPVC Check Valve with Socket Ends
$748.06​/Each
Save 5%2+$710.65/Each
Save 10%4+$673.25/Each
Save 15%12+$635.85/Each
P-418
$748.06​/Each
Special Order
3" CPVC Check Valve with Threaded Ends
18277
3" CPVC Check Valve with Threaded Ends
$748.06​/Each
Save 5%2+$710.65/Each
Save 10%4+$673.25/Each
Save 15%12+$635.85/Each
P-418
$748.06​/Each
Special Order
2" CPVC Check Valve with Threaded and Socket Ends
18276
2" CPVC Check Valve with Threaded and Socket Ends
$278.96​/Each
Save 5%2+$265.01/Each
Save 10%4+$251.06/Each
Save 15%12+$237.11/Each
P-418
$278.96​/Each
On Order
1/2" PVC Foot Valve Screen Assembly for 18291
19430
1/2" PVC Foot Valve Screen Assembly for 18291
$47.95​/Each
Save 5%2+$45.55/Each
Save 10%4+$43.15/Each
Save 15%12+$40.75/Each
P-418
$47.95​/Each
In Stock
3/4" PVC Foot Valve Screen Assembly for 18292
19440
3/4" PVC Foot Valve Screen Assembly for 18292
$58.42​/Each
Save 5%2+$55.49/Each
Save 10%4+$52.57/Each
Save 15%12+$49.65/Each
P-418
$58.42​/Each
Special Order
1" PVC Foot Valve Screen Assembly for 18293
19450
1" PVC Foot Valve Screen Assembly for 18293
$78.90​/Each
Save 5%2+$74.95/Each
Save 10%4+$71.01/Each
Save 15%12+$67.06/Each
P-418
$78.90​/Each
Special Order
1-1/4" & 1-1/2"  PVC Foot Valve Screen Assembly for 18294 & 18295
19470
1-1/4" & 1-1/2" PVC Foot Valve Screen Assembly for 18294 & 18295
$135.87​/Each
Save 5%2+$129.07/Each
Save 10%4+$122.28/Each
Save 15%12+$115.49/Each
P-418
$135.87​/Each
Special Order
2" PVC Foot Valve Screen Assembly for 18296
19490
2" PVC Foot Valve Screen Assembly for 18296
$163.51​/Each
Save 5%2+$155.33/Each
Save 10%4+$147.15/Each
Save 15%12+$138.98/Each
P-418
$163.51​/Each
In Stock
3" PVC Foot Valve Screen Assembly for 18297
19500
3" PVC Foot Valve Screen Assembly for 18297
$193.00​/Each
Save 5%2+$183.35/Each
Save 10%4+$173.70/Each
Save 15%12+$164.05/Each
P-418
$193.00​/Each
In Stock