The Watts RK 757/757DCDA-CK1-RS is a genuine first check kit (red silicone) for 2 1/2" to 4" 757 / 757DCDA double check valve assemblies. It features a silicone seat.
This first check repair kit provides all the parts necessary to repair or replace the first check on a 2 1/2 to 4 inch double check valve assembly backflow preventer, model 757, and double check detector assembly backflow preventer, model 757DCDA. This kit consist of a first check module, check module O-ring, and red silicone disc elastomer.
Features
- Factory replacement kit
- Can be installed in either horizontal or vertical position
- Serviceable without the use of special tools
- Extremely compact design
Common Questions
- Will this kit fit my valve?
- The RK 757/757DCDA-CK1-RS fits 2 1/2", 3" and 4" sizes of Watts series 757 / 757DCDA. Kits are size- and series-specific, so match the model stamped on your valve body or cover before ordering.
- What's included in this kit?
- This is a first check kit (red silicone). Kit consists of: a first check module, check module O-ring, and red silicone disc elastomer.
- Are these genuine Watts parts?
- Yes. This is the factory RK 757/757DCDA-CK1-RS kit built with genuine Watts OEM components. Aftermarket parts can void your assembly approval and are commonly rejected by inspectors at annual test time.
- Which kit do I need if my relief valve failed the test?
- Not this one — this kit services the check valve. A failed relief valve needs the RV (rubber parts) or VT (total relief valve) kit for 757 / 757DCDA in your size; a total repair (T) kit covers the relief valve and both checks.
Specifications
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Type: Double Check
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Seat / Seal Material: Silicone
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Country of Origin: United States
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Warranty: 1 Year Limited
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MPN: RK 757/757DCDA-CK1-RS
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Lead-Free: No
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Product Role: repair_kit
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Kit Type: First Check Kit (Red Silicone)
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Fits Brand: Watts
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Fits Valve Series: 757;757DCDA
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Fits Valve Size: 2 1/2";3";4"
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Used With: 2 1/2" 757;2 1/2" 757DCDA;3" 757;3" 757DCDA;4" 757;4" 757DCDA
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Kit Contents: Kit consists of: a first check module, check module O-ring, and red silicone disc elastomer.
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Genuine OEM Parts: Yes
