Hayward® Diaphragm Valves

Diaphragm valves are engineered to provide superior handling of difficult media such as corrosive fluids, abrasives and slurries. They can also be used for high purity and sanitary applications. The valve controls flow by varying the space between a stationary weir and a moveable flexible diaphragm. By compressing the diaphragm against the weir, all flow is shut off. Additional diaphragms and materials available, contact us for quote.

  • CPVC or polypropylene
  • PTFE or FPM diaphragm
  • Wetted components are the lower half of the valve body & the diaphragm
  • Large, sure-grip handwheel makes it easy to open or close the valve
  • Beacon-type indicator provides highly visible position indication
  • Stroke adjustment allows precise "tweaking" of diaphragm movement for very precise flow control
  • Pressure rating: 150 psi @ 70°F, non-shock
  • Temperature rating: 190°F (CPVC) & 200°F (PP)
Stock Description Catalog Pg. Price
1/2" CPVC Hayward® DAB Series True Union Diaphragm Valve w/FPM Diaphragm
19538
1/2" CPVC Hayward® DAB Series True Union Diaphragm Valve w/FPM Diaphragm
$289.10​/Each
Save 5%2+$274.64/Each
Save 10%4+$260.19/Each
Save 15%12+$245.73/Each
Internet Only
$289.10​/Each
Drop Ship
3/4" CPVC Hayward® DAB Series True Union Diaphragm Valve  w/FPM Diaphragm
19540
3/4" CPVC Hayward® DAB Series True Union Diaphragm Valve w/FPM Diaphragm
$311.77​/Each
Save 5%2+$296.18/Each
Save 10%4+$280.59/Each
Save 15%12+$265.00/Each
Internet Only
$311.77​/Each
Drop Ship
1" CPVC Hayward® DAB Series True Union Diaphragm Valve w/FPM Diaphragm
19543
1" CPVC Hayward® DAB Series True Union Diaphragm Valve w/FPM Diaphragm
$384.09​/Each
Save 5%2+$364.88/Each
Save 10%4+$345.68/Each
Save 15%12+$326.47/Each
Internet Only
$384.09​/Each
Drop Ship
1-1/4" CPVC Hayward® DAB Series True Union Diaphragm Valve  w/FPM Diaphragm
19545
1-1/4" CPVC Hayward® DAB Series True Union Diaphragm Valve w/FPM Diaphragm
$555.66​/Each
Save 5%2+$527.87/Each
Save 10%4+$500.09/Each
Save 15%12+$472.31/Each
Internet Only
$555.66​/Each
Drop Ship
1-1/2" CPVC Hayward® DAB Series True Union Diaphragm Valve w/FPM Diaphragm
19546
1-1/2" CPVC Hayward® DAB Series True Union Diaphragm Valve w/FPM Diaphragm
$555.66​/Each
Save 5%2+$527.87/Each
Save 10%4+$500.09/Each
Save 15%12+$472.31/Each
Internet Only
$555.66​/Each
Drop Ship
2" CPVC Hayward® DAB Series True Union Diaphragm Valve w/FPM Diaphragm
19547
2" CPVC Hayward® DAB Series True Union Diaphragm Valve w/FPM Diaphragm
$603.54​/Each
Save 5%2+$573.36/Each
Save 10%4+$543.18/Each
Save 15%12+$513.00/Each
Internet Only
$603.54​/Each
Drop Ship
1/2" CPVC Hayward® DAB Series True Union Diaphragm Valve  w/PTFE Diaphragm
19549
1/2" CPVC Hayward® DAB Series True Union Diaphragm Valve w/PTFE Diaphragm
$328.59​/Each
Save 5%2+$312.16/Each
Save 10%4+$295.73/Each
Save 15%12+$279.30/Each
Internet Only
$328.59​/Each
Drop Ship
3/4" CPVC Hayward® DAB Series True Union Diaphragm Valve  w/PTFE Diaphragm
19550
3/4" CPVC Hayward® DAB Series True Union Diaphragm Valve w/PTFE Diaphragm
$349.55​/Each
Save 5%2+$332.07/Each
Save 10%4+$314.59/Each
Save 15%12+$297.11/Each
Internet Only
$349.55​/Each
Drop Ship
1" CPVC Hayward® DAB Series True Union Diaphragm Valve w/PTFE Diaphragm
19553
1" CPVC Hayward® DAB Series True Union Diaphragm Valve w/PTFE Diaphragm
$418.75​/Each
Save 5%2+$397.81/Each
Save 10%4+$376.87/Each
Save 15%12+$355.93/Each
Internet Only
$418.75​/Each
Drop Ship
1-1/4" CPVC Hayward® DAB Series True Union Diaphragm Valve  w/PTFE Diaphragm
19554
1-1/4" CPVC Hayward® DAB Series True Union Diaphragm Valve w/PTFE Diaphragm
$659.42​/Each
Save 5%2+$626.44/Each
Save 10%4+$593.47/Each
Save 15%12+$560.50/Each
Internet Only
$659.42​/Each
Drop Ship
1-1/2" CPVC Hayward® DAB Series True Union Diaphragm Valve  w/PTFE Diaphragm
19555
1-1/2" CPVC Hayward® DAB Series True Union Diaphragm Valve w/PTFE Diaphragm
$665.25​/Each
Save 5%2+$631.98/Each
Save 10%4+$598.72/Each
Save 15%12+$565.46/Each
Internet Only
$665.25​/Each
Drop Ship
2" CPVC Hayward® DAB Series True Union Diaphragm Valve w/PTFE Diaphragm
19556
2" CPVC Hayward® DAB Series True Union Diaphragm Valve w/PTFE Diaphragm
$690.65​/Each
Save 5%2+$656.11/Each
Save 10%4+$621.58/Each
Save 15%12+$587.05/Each
Internet Only
$690.65​/Each
Drop Ship
1/2" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/FPM Diaphragm
19571
1/2" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/FPM Diaphragm
$283.28​/Each
Save 5%2+$269.11/Each
Save 10%4+$254.95/Each
Save 15%12+$240.78/Each
Internet Only
$283.28​/Each
Drop Ship
3/4" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/FPM Diaphragm
19572
3/4" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/FPM Diaphragm
$317.16​/Each
Save 5%2+$301.30/Each
Save 10%4+$285.44/Each
Save 15%12+$269.58/Each
Internet Only
$317.16​/Each
Drop Ship
1" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/FPM Diaphragm
19573
1" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/FPM Diaphragm
$396.36​/Each
Save 5%2+$376.54/Each
Save 10%4+$356.72/Each
Save 15%12+$336.90/Each
Internet Only
$396.36​/Each
Drop Ship
1-1/4" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/FPM Diaphragm
19574
1-1/4" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/FPM Diaphragm
$611.90​/Each
Save 5%2+$581.30/Each
Save 10%4+$550.71/Each
Save 15%12+$520.11/Each
Internet Only
$611.90​/Each
Drop Ship
1-1/2" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/FPM Diaphragm
19575
1-1/2" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/FPM Diaphragm
$611.90​/Each
Save 5%2+$581.30/Each
Save 10%4+$550.71/Each
Save 15%12+$520.11/Each
Internet Only
$611.90​/Each
Drop Ship
2" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/FPM Diaphragm
19577
2" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/FPM Diaphragm
$712.57​/Each
Save 5%2+$676.94/Each
Save 10%4+$641.31/Each
Save 15%12+$605.68/Each
Internet Only
$712.57​/Each
Drop Ship
2-1/2" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/FPM Diaphragm
19578
2-1/2" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/FPM Diaphragm
$1,038.71​/Each
Save 5%2+$986.77/Each
Save 10%4+$934.83/Each
Save 15%12+$882.90/Each
Internet Only
$1,038.71​/Each
Drop Ship
3" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/FPM  Diaphragm
19579
3" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/FPM Diaphragm
$2,525.57​/Each
Save 5%2+$2399.29/Each
Save 10%4+$2273.01/Each
Save 15%12+$2146.73/Each
Internet Only
$2,525.57​/Each
Drop Ship
4" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/FPM Diaphragm
19580
4" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/FPM Diaphragm
$2,139.62​/Each
Save 5%2+$2032.63/Each
Save 10%4+$1925.65/Each
Save 15%12+$1818.67/Each
Internet Only
$2,139.62​/Each
Drop Ship
1/2" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/PTFE Diaphragm
19581
1/2" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/PTFE Diaphragm
$346.94​/Each
Save 5%2+$329.59/Each
Save 10%4+$312.24/Each
Save 15%12+$294.89/Each
Internet Only
$346.94​/Each
Drop Ship
3/4" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/PTFE Diaphragm
19582
3/4" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/PTFE Diaphragm
$384.09​/Each
Save 5%2+$364.88/Each
Save 10%4+$345.68/Each
Save 15%12+$326.47/Each
Internet Only
$384.09​/Each
Drop Ship
1" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/PTFE Diaphragm
19583
1" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/PTFE Diaphragm
$481.14​/Each
Save 5%2+$457.08/Each
Save 10%4+$433.02/Each
Save 15%12+$408.96/Each
Internet Only
$481.14​/Each
Drop Ship
1-1/4" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/PTFE Diaphragm
19584
1-1/4" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/PTFE Diaphragm
$605.87​/Each
Save 5%2+$575.57/Each
Save 10%4+$545.28/Each
Save 15%12+$514.99/Each
Internet Only
$605.87​/Each
Drop Ship
1-1/2" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/PTFE Diaphragm
19585
1-1/2" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/PTFE Diaphragm
$712.26​/Each
Save 5%2+$676.64/Each
Save 10%4+$641.03/Each
Save 15%12+$605.42/Each
Internet Only
$712.26​/Each
Drop Ship
2" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/PTFE Diaphragm
19586
2" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/PTFE Diaphragm
$806.59​/Each
Save 5%2+$766.26/Each
Save 10%4+$725.93/Each
Save 15%12+$685.60/Each
Internet Only
$806.59​/Each
Drop Ship
2-1/2" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/PTFE Diaphragm
19587
2-1/2" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/PTFE Diaphragm
$1,468.93​/Each
Save 5%2+$1395.48/Each
Save 10%4+$1322.03/Each
Save 15%12+$1248.59/Each
Internet Only
$1,468.93​/Each
Drop Ship
3" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/PTFE Diaphragm
19588
3" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/PTFE Diaphragm
$1,797.20​/Each
Save 5%2+$1707.34/Each
Save 10%4+$1617.48/Each
Save 15%12+$1527.62/Each
Internet Only
$1,797.20​/Each
Drop Ship
4" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/PTFE Diaphragm
19589
4" CPVC Hayward® DAB Series Flanged Diaphragm Valve w/PTFE Diaphragm
$2,547.17​/Each
Save 5%2+$2419.81/Each
Save 10%4+$2292.45/Each
Save 15%12+$2165.09/Each
Internet Only
$2,547.17​/Each
Drop Ship