LF757DCDA
Double Check Detector Assembly Backflow Preventers, Stainless Steel
Features
- Extremely compact design
- Lighter than traditional designs
- Groove fittings allow integral pipeline adjustment
- Tri-link spring check provides lowest pressure loss
Series LF757DCDA Lead Free* Double Check Detector Assemblies prevent the backflow of pollutants that are objectionable, but not toxic, from entering into the potable water supply. Compact housings have two independently operating tri-link check valves, two shutoff valves, and four test cocks. They feature a stainless steel housing and sleeve and are 70% lighter than traditional designs. Series LF757 is designed for non-health hazard applications and may be installed under continuous pressure service to protect against both backpressure and backsiphonage. This series is used primarily on fire sprinkler lines when it is necessary to monitor unauthorized use of water. Maximum Working Pressure: 175psi (12.06 bar).
Literature
Select a Model
Select options below to identify the UPC, Order Code, and Repair Kit for a specific LF757DCDA
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| Model | Product Used On | Kit Contents |
|---|---|---|
|
RK 757/757DCDA-CK1-RS
First Check Kit |
</br> |
First Check Module, Check Module O-ring, Red Silicone Disc Elastomer</br> |
|
RK 757/757DCDA-CK2 21/2-4
Second Check Kit |
</br> |
Second Check Module, Check Module O-ring, Red Silicone Disc Elastomer</br> |
|
RK 757/RK 757DCDA-C 2 1/2-4
Check Sleeve Cover Kit |
</br> |
Closure Sleeve, Sleeve O-ring, Gasket</br> |
|
RK 757/RK 757DCDA-RC4 2 1/2-4
Check Rubber Parts Kit |
</br> |
Check Module O-ring, Red Silicone Disc Elastomer, E-Clip</br> |
|
RK 757/757DCDA-CK1 6
First Check Kit |
</br> |
First Check Module, Check Module O-ring, Red Silicone Disc Elastomer</br> |
|
RK 757/757DCDA-CK2 6
Second Check Kit |
</br> |
Second Check Module, Check Module O-ring, Red Silicone Disc Elastomer</br> |
|
RK 757/RK 757DCDA-C 6
Check Sleeve Cover Kit |
</br> |
Closure Sleeve, Sleeve O-ring, Gasket</br> |
|
RK 757/RK 757DCDA-RC4 6
Check Rubber Parts Kit |
</br> |
Check Module O-ring, Red Silicone Disc Elastomer, E-Clip</br> |
|
RK 757/757DCDA-CK1 8
First Check Kit |
</br> |
First Check Module, Check Module O-ring, Red Silicone Disc Elastomer</br> |
|
RK 757/RK 757DCDA-C 8
Check Sleeve Cover Kit |
</br> |
Closure Sleeve, Sleeve O-ring, Gasket</br> |
|
RK 757/RK 757DCDA-CK2 8
Second Check Kit |
</br> |
Second Check Module, Check Module O-ring, Red Silicone Disc Elastomer</br> |
|
RK 757/RK 757DCDA-RC4 8
Check Rubber Parts Kit |
</br> |
Check Module O-ring, Red Silicone Disc Elastomer, E-Clip</br> |
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Approval/Certification Information
For product-specific approval information, please refer to the product’s specification sheet (see literature section above) or ask a Watts representative. Some certification agencies allow you to search by product name and brand.