Apply to be a TradeMaster!
Filter menu expanded

Filters

92 items
Reset

SORT

Product Availability
–

Show In Stock Only (12)

Category
–

Size
–

3/4" (1)
2" (3)
2-1/2" (3)
3" (8)
4" (18)
6" (19)
8" (20)
8 (2)
10" (5)
12" (2)

Price Range
–

$20 to $25 (1)
$100 to $200 (1)
$200 to $300 (1)
$300 to $400 (1)
$400 to $500 (3)
$500 to $600 (3)
$600 to $700 (1)
$1000 to $1500 (2)
$1500 to $2000 (4)
$2000 to $2500 (1)

Double Check Detector Assemblies

92 items
Grid
List
Compare
Product Image of 4" 757DCDA Double Check Detector Assembly with OSY Shutoff Valves w/o Meter (757DCDA-OSY-LM)
4" 757DCDA Double Check Detector Assembly with OSY Shutoff Valves w/o Meter (757DCDA-OSY-LM)
SKU: 0111839
Watts
SKU: 0111839
Brand: Watts
$6,145.77 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 2" Bronze DCDA2, 4A Series Double Check Detector Assembly, 4A628E2STF
2" Bronze DCDA2, 4A Series Double Check Detector Assembly, 4A628E2STF
SKU: 4A628E2STF
Apollo Valves
SKU: 4A628E2STF
Brand: Apollo Valves
$2,834.03 each
Out of Stock
Get it by Thu, Oct 29 - Thu, Nov 5
Out of Stock
Get it by Thu, Oct 29 - Thu, Nov 5
Compare
Product Image of 8" DCDA4SG , GRV, 4SG, W/OS&Y FLG GV, 4SG60EE3
8" DCDA4SG , GRV, 4SG, W/OS&Y FLG GV, 4SG60EE3
SKU: 4SG60EE3
Apollo Valves
SKU: 4SG60EE3
Brand: Apollo Valves
$9,779.00 each
Out of Stock
Get it by Thu, Oct 29 - Thu, Nov 5
Out of Stock
Get it by Thu, Oct 29 - Thu, Nov 5
Compare
Product Image of 4" MJS Ductile Iron Valve Setter
4" MJS Ductile Iron Valve Setter
SKU: 4-MJS
Zurn
SKU: 4-MJS
Brand: Zurn
$1,621.03 each
In Stock
Get 12 by Fri, Oct 16
In Stock
Get 12 by Fri, Oct 16
Compare
Product Image of 8" Check Replacement Kit for 856/876V Series
8" Check Replacement Kit for 856/876V Series
SKU: 905541
Febco
SKU: 905541
Brand: Febco
$2,082.87 each
Backorder
Get it by Thu, Nov 12 - Fri, Dec 11
Backorder
Get it by Thu, Nov 12 - Fri, Dec 11
Compare
Product Image of 8" Double Check Detector Backflow Preventer Assembly, SS Body w/ Grooved End Butterfly Valves (Lead Free)
8" Double Check Detector Backflow Preventer Assembly, SS Body w/ Grooved End Butterfly Valves (Lead Free)
SKU: 8-350ASTBG
Zurn
SKU: 8-350ASTBG
Brand: Zurn
$21,498.99 each
Out of Stock
Get it by Fri, Oct 30 - Tue, Nov 10
Out of Stock
Get it by Fri, Oct 30 - Tue, Nov 10
Compare
Product Image of 3" 757 Double Check Detector Assembly (OSY-CFM)
3" 757 Double Check Detector Assembly (OSY-CFM)
SKU: 0111545
Watts
SKU: 0111545
Brand: Watts
$5,897.38 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 6" LF709-OSY Lead Free Double Check Valve Assembly
6" LF709-OSY Lead Free Double Check Valve Assembly
SKU: 0122790
Watts
SKU: 0122790
Brand: Watts
$9,969.34 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 8" LF709-OSY Lead Free Double Check Valve Assembly
8" LF709-OSY Lead Free Double Check Valve Assembly
SKU: 0122791
Watts
SKU: 0122791
Brand: Watts
$21,905.14 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 8" Double Check Detector Backflow Preventer, Cubic Feet Meter, LF757DCDA-OSY-CFM (Lead Free)
8" Double Check Detector Backflow Preventer, Cubic Feet Meter, LF757DCDA-OSY-CFM (Lead Free)
SKU: 0122713
Watts
SKU: 0122713
Brand: Watts
$15,170.45 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 8" Lead Free Double Check Detector Backflow Preventer Assembly, OSY Shutoff Valves, Gallons/Minute Meter
8" Lead Free Double Check Detector Backflow Preventer Assembly, OSY Shutoff Valves, Gallons/Minute Meter
SKU: 0122718
Watts
SKU: 0122718
Brand: Watts
$23,061.05 each
In Stock
Get 12 by Wed, Oct 21 - Mon, Oct 26
In Stock
Get 12 by Wed, Oct 21 - Mon, Oct 26
Compare
Product Image of 8" Double Check Detector Assembly (D 709 OSY-GPM 3/4")
8" Double Check Detector Assembly (D 709 OSY-GPM 3/4")
SKU: 0389193
Watts
SKU: 0389193
Brand: Watts
$22,955.08 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 4" Double Check Detector Assembly (D 709 OSY-CFM 3/4")
4" Double Check Detector Assembly (D 709 OSY-CFM 3/4")
SKU: 0389187
Watts
SKU: 0389187
Brand: Watts
$7,304.25 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 4" 757 Double Check Detector Assembly with NRS Shutoff Valves (757-NRS)
4" 757 Double Check Detector Assembly with NRS Shutoff Valves (757-NRS)
SKU: 0111524
Watts
SKU: 0111524
Brand: Watts
$4,474.43 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 4" 774 Double Check Detector Assembly (774DCDA-OSY-CFM)
4" 774 Double Check Detector Assembly (774DCDA-OSY-CFM)
SKU: 0438004
Watts
SKU: 0438004
Brand: Watts
$6,233.35 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 2-1/2" to 4" Backflow Preventer Second Check Valve Repair Kit for 994 and 994DCDA
2-1/2" to 4" Backflow Preventer Second Check Valve Repair Kit for 994 and 994DCDA
SKU: 0888833
Watts
SKU: 0888833
Brand: Watts
$499.45 each
Backorder
Get it by Thu, Nov 12 - Fri, Dec 11
Backorder
Get it by Thu, Nov 12 - Fri, Dec 11
Compare
Product Image of 6" LF709-DOSY Lead Free Double Check Valve Assembly (Lead Free)
6" LF709-DOSY Lead Free Double Check Valve Assembly (Lead Free)
SKU: 0792169
Watts
SKU: 0792169
Brand: Watts
$11,354.90 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 10" Wilkins Double Check Detector Backflow Preventer Assembly, Stainless Steel Body w/ Flanged OS&Y Gate Valves (Lead Free)
10" Wilkins Double Check Detector Backflow Preventer Assembly, Stainless Steel Body w/ Flanged OS&Y Gate Valves (Lead Free)
SKU: 10-350ASTOSY
Zurn
SKU: 10-350ASTOSY
Brand: Zurn
$27,669.99 each
Out of Stock
Get it by Fri, Oct 30 - Tue, Nov 10
Out of Stock
Get it by Fri, Oct 30 - Tue, Nov 10
Compare
Product Image of 10" Wilkins Double Check Detector Backflow Preventer Assembly, Stainless Steel Body, Flanged x Flanged (Lead Free)
10" Wilkins Double Check Detector Backflow Preventer Assembly, Stainless Steel Body, Flanged x Flanged (Lead Free)
SKU: 10-350ASTDA
Zurn
SKU: 10-350ASTDA
Brand: Zurn
$30,078.99 each
Out of Stock
Get it by Fri, Oct 30 - Tue, Nov 10
Out of Stock
Get it by Fri, Oct 30 - Tue, Nov 10
Compare
Product Image of 8" Lead Free Fourth Check Repair Kit for Double Check Valve Assembly LF709
8" Lead Free Fourth Check Repair Kit for Double Check Valve Assembly LF709
SKU: 0794017
Watts
SKU: 0794017
Brand: Watts
$4,522.22 each
Backorder
Get it by Thu, Nov 12 - Fri, Dec 11
Backorder
Get it by Thu, Nov 12 - Fri, Dec 11
Compare
Product Image of 4" Double Check Detector Assembly Backflow Preventer
4" Double Check Detector Assembly Backflow Preventer
SKU: 4-450DA
Zurn
SKU: 4-450DA
Brand: Zurn
$9,544.99 each
Out of Stock
Get it by Fri, Oct 30 - Tue, Nov 10
Out of Stock
Get it by Fri, Oct 30 - Tue, Nov 10
Compare
Product Image of 4" Double Check Detector Backflow Preventer Assembly, SS Body w/ Grooved End Butterfly Valves (Lead Free)
4" Double Check Detector Backflow Preventer Assembly, SS Body w/ Grooved End Butterfly Valves (Lead Free)
SKU: 4-350ASTBG
Zurn
SKU: 4-350ASTBG
Brand: Zurn
$7,564.99 each
In Stock
Get 6 by Wed, Oct 21 - Mon, Oct 26
In Stock
Get 6 by Wed, Oct 21 - Mon, Oct 26
Compare
Product Image of 6" DCDA-2 Double Check Detector Assembly, OS&Y, FXF, MTR GPM, Lead Free 4ALF, SS, 4ALF62CE3
6" DCDA-2 Double Check Detector Assembly, OS&Y, FXF, MTR GPM, Lead Free 4ALF, SS, 4ALF62CE3
SKU: 4ALF62CE3
Apollo Valves
SKU: 4ALF62CE3
Brand: Apollo Valves
$5,498.90 each
Out of Stock
Get it by Thu, Oct 29 - Thu, Nov 5
Out of Stock
Get it by Thu, Oct 29 - Thu, Nov 5
Compare
Product Image of 6" Double Check Detector Assembly Backflow Preventer
6" Double Check Detector Assembly Backflow Preventer
SKU: 6-450DA
Zurn
SKU: 6-450DA
Brand: Zurn
$13,674.99 each
In Stock
Get 20 by Wed, Oct 21 - Mon, Oct 26
In Stock
Get 20 by Wed, Oct 21 - Mon, Oct 26
Compare
Product Image of 4" 994-OSY-FS Stainless Steel Reduced Pressure Zone Assembly w/ Flood Sensor Connectivity
4" 994-OSY-FS Stainless Steel Reduced Pressure Zone Assembly w/ Flood Sensor Connectivity
SKU: F438049
Watts
SKU: F438049
Brand: Watts
$7,617.27 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 4" 757 Double Check Detector Assembly, Lead Free (757DCDA-OSY-CFM)
4" 757 Double Check Detector Assembly, Lead Free (757DCDA-OSY-CFM)
SKU: 0122711
Watts
SKU: 0122711
Brand: Watts
$6,108.31 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 3" LF709-OSY Lead Free Double Check Valve Assembly
3" LF709-OSY Lead Free Double Check Valve Assembly
SKU: 0122786
Watts
SKU: 0122786
Brand: Watts
$5,969.98 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 2-1/2" 757 Double Check Detector Assembly with OSY Shutoff Valves (757-OSY)
2-1/2" 757 Double Check Detector Assembly with OSY Shutoff Valves (757-OSY)
SKU: 0111510
Watts
SKU: 0111510
Brand: Watts
$4,050.98 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 2-1/2" 757 Double Check Detector Assembly with NRS Shutoff Valves (757-NRS)
2-1/2" 757 Double Check Detector Assembly with NRS Shutoff Valves (757-NRS)
SKU: 0111522
Watts
SKU: 0111522
Brand: Watts
$3,838.99 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 3" 757DCDA Double Check Detector Assembly with OSY Shutoff Valves w/o Meter (757DCDA-OSY-LM)
3" 757DCDA Double Check Detector Assembly with OSY Shutoff Valves w/o Meter (757DCDA-OSY-LM)
SKU: 0111838
Watts
SKU: 0111838
Brand: Watts
$5,705.85 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 8" 757 Double Check Detector Assembly with OSY Shutoff Valves (757-OSY)
8" 757 Double Check Detector Assembly with OSY Shutoff Valves (757-OSY)
SKU: 0111514
Watts
SKU: 0111514
Brand: Watts
$13,212.12 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 4" 757 Double Check Detector Assembly (OSY-GPM)
4" 757 Double Check Detector Assembly (OSY-GPM)
SKU: 0111552
Watts
SKU: 0111552
Brand: Watts
$6,787.46 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 3" Double Check Detector Assembly (709 OSY-CFM)
3" Double Check Detector Assembly (709 OSY-CFM)
SKU: 0387052
Watts
SKU: 0387052
Brand: Watts
$11,221.50 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 10" Double Check Detector Assembly (D 709 OSY-CFM 3/4")
10" Double Check Detector Assembly (D 709 OSY-CFM 3/4")
SKU: 0389190
Watts
SKU: 0389190
Brand: Watts
$25,526.93 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 4" Double Check Detector Assembly (709 OSY-CFM)
4" Double Check Detector Assembly (709 OSY-CFM)
SKU: 0387058
Watts
SKU: 0387058
Brand: Watts
$14,649.03 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of Rubber Repair Kit for Watts 1-1/2" - 2" 709 (RK 709-CK4)
Rubber Repair Kit for Watts 1-1/2" - 2" 709 (RK 709-CK4)
SKU: 0887151
Watts
SKU: 0887151
Brand: Watts
$289.40 each
Backorder
Get it by Thu, Nov 12 - Fri, Dec 11
Backorder
Get it by Thu, Nov 12 - Fri, Dec 11
Compare
Product Image of 10" Double Check Detector Assembly (709 OSY-CFM)
10" Double Check Detector Assembly (709 OSY-CFM)
SKU: 0387090
Watts
SKU: 0387090
Brand: Watts
$43,162.36 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 6" 774 Double Check Detector Assembly w/ OSY Shutoffs, Cubic Feet Meter, Short Lay Length (774DCDA-OSY-GPM)
6" 774 Double Check Detector Assembly w/ OSY Shutoffs, Cubic Feet Meter, Short Lay Length (774DCDA-OSY-GPM)
SKU: 0438012
Watts
SKU: 0438012
Brand: Watts
$11,342.28 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 12" 774 Double Check Detector Assembly w/ OSY Shutoffs, GPM Meter, Short Lay Length (774DCDA-OSY-GPM)
12" 774 Double Check Detector Assembly w/ OSY Shutoffs, GPM Meter, Short Lay Length (774DCDA-OSY-GPM)
SKU: 0438085
Watts
SKU: 0438085
Brand: Watts
$40,902.43 each
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of LFRK 709-S 6 Backflow Preventer Cover Kit
LFRK 709-S 6 Backflow Preventer Cover Kit
SKU: 0887922
Watts
SKU: 0887922
Brand: Watts
$541.81 each
Backorder
Get it by Thu, Nov 12 - Fri, Dec 11
Backorder
Get it by Thu, Nov 12 - Fri, Dec 11
Compare
Product Image of 12" Double Check Detector Backflow Preventer Assembly, Ductile Iron Body, Flanged x Flanged (Lead Free)
12" Double Check Detector Backflow Preventer Assembly, Ductile Iron Body, Flanged x Flanged (Lead Free)
SKU: 12IN-350DA
Zurn
SKU: 12IN-350DA
Brand: Zurn
$48,464.99 each
Phone Icon
CALL TO ORDER
1-888-757-4774
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Backorder
Get it by Fri, Nov 13 - Wed, Dec 16
Compare
Product Image of 8" Double Check Detector Backflow Preventer Assembly, Ductile Iron Body, Flanged x Flanged (Lead Free)
8" Double Check Detector Backflow Preventer Assembly, Ductile Iron Body, Flanged x Flanged (Lead Free)
SKU: 8-350DA
Zurn
SKU: 8-350DA
Brand: Zurn
$19,711.99 each
Phone Icon
CALL TO ORDER
1-888-757-4774
In Stock
Get 9 by Wed, Oct 21 - Mon, Oct 26
In Stock
Get 9 by Wed, Oct 21 - Mon, Oct 26
Compare
Product Image of 8" Double Check Detector Assembly Backflow Preventer
8" Double Check Detector Assembly Backflow Preventer
SKU: 8-450DA
Zurn
SKU: 8-450DA
Brand: Zurn
$25,716.99 each
In Stock
Get 4 by Wed, Oct 21 - Mon, Oct 26
In Stock
Get 4 by Wed, Oct 21 - Mon, Oct 26
Compare
Product Image of 8" MJS Ductile Iron Valve Setter
8" MJS Ductile Iron Valve Setter
SKU: 8-MJS
Zurn
SKU: 8-MJS
Brand: Zurn
$3,029.99 each
In Stock
Get 3 by Wed, Oct 21 - Mon, Oct 26
In Stock
Get 3 by Wed, Oct 21 - Mon, Oct 26
Didn't find what you're looking for? 
Let us know
.
×

Video