WATTS 0889370 Backflow Preventer Repair Kit 957/957RPDA-RT 2-1/2-4

( Brand: Watts ), ( Manufacturer Part Number: 0889370 ), ( Suitable Media: Water ), ( Color: Black ), ( Pipe Size: 4 In ), ( Valve Operation: Manual ), ( Backflow Preventer Type: Reduced Pressure Zone ), ( Depth: 6.500 ), ( Type: Pipes, Valves Fittings Valves Backflow Preventer Repair Kit ), ( Length: 2.25 In ), ( Features: Backflow Preventer Repair Kits ), ( Country Of Origin: United States )

Review WATTS Rk 957/957rpda-rt 2-1/2-4 Backflow Preventer Repair Kit New Ship

The **Watts 0889370 957/957RPDA-RT 2-1/2" to 4" Backflow Preventer Repair Kit** is a meticulously engineered solution designed to restore functionality and ensure compliance for residential, commercial, and municipal water systems equipped with Watts 957 or 957RPDA-RT backflow preventers. This comprehensive repair kit is crafted to address common wear-and-tear issues, leaks, or mechanical failures that may compromise the integrity of these critical devices, which are essential for preventing contaminated water from re-entering the potable supply. The kit includes a selection of high-quality, precision-machined parts tailored to the specific dimensions and operational requirements of the 957 series, ensuring seamless compatibility and reliable performance. At its core, the kit features a durable **check valve assembly**, often a primary point of failure due to sediment buildup or corrosion, along with **sealing gaskets and O-rings** designed to maintain a watertight seal under high-pressure conditions. Additionally, the kit may incorporate **spring assemblies**, **diaphragms**, and **stainless steel or brass components** to withstand the corrosive effects of water and harsh environmental conditions, extending the lifespan of the backflow preventer. For added convenience, the repair kit is thoughtfully packaged with clear labeling and organized components, allowing for efficient and hassle-free installation by professionals or trained technicians. Whether addressing minor leaks, replacing worn seals, or overhauling internal mechanisms, this kit empowers users to perform repairs with confidence, ensuring that their backflow preventer operates at peak efficiency and adheres to local plumbing codes and safety standards. By investing in this repair solution, system operators can minimize downtime, reduce long-term maintenance costs, and uphold the critical function of protecting public health through reliable backflow prevention.

### **Pros and Cons of buying a Watts 0889370 957/957RPDA-RT 2-1/2" to 4" Backflow Preventer Repair Kit**

1. **Compatibility** This repair kit is specifically designed for Watts 957 and 957RPDA-RT backflow preventers, ensuring a proper fit and reducing the risk of improper installation.

2. **Quality Components** Watts is a well-known brand in plumbing and water safety, so the parts included in the kit are likely durable and reliable.

3. **Cost-Effective Solution** Repairing a backflow preventer with this kit is often cheaper than replacing the entire unit, especially if the issue is minor (e.g., worn seals, O-rings, or gaskets).

4. **DIY-Friendly** Many homeowners or small businesses with basic plumbing skills can install the kit themselves, saving on professional labor costs.

5. **Prevents Water Contamination** A properly functioning backflow preventer protects against backflow, which can contaminate drinking water with pollutants or sewage.

6. **Warranty Coverage** If the kit includes new parts, they may come with a warranty, providing peace of mind against early failure.

7. **Time Efficiency** Repairing rather than replacing can be faster, especially if the issue is isolated to a few components.

1. **Limited Scope** The kit may only address specific issues (e.g., seals, gaskets, or minor internal wear). If the problem is structural (e.g., cracked housing, damaged check valves), the kit may not suffice, requiring full replacement.

2. **Skill Dependency** If the user lacks plumbing experience, improper installation could lead to leaks, reduced performance, or even damage to the backflow preventer.

3. **Cost of Parts vs. Replacement** While repairs are often cheaper, if the unit is old or frequently fails, replacing it entirely might be more cost-effective in the long run.

4. **Availability of Parts** If the kit is discontinued or parts are hard to find, future repairs could become difficult or expensive.

5. **Testing Requirements** After repair, the backflow preventer must be tested by a certified professional to ensure it meets safety standards. This adds an extra cost and step.

6. **Potential Hidden Damage** If the issue is not properly diagnosed, the repair may not fully resolve the problem, leading to recurring failures.

7. **Voided Warranty (If Applicable)** If the backflow preventer was originally under warranty, attempting a DIY repair could void coverage, requiring full replacement costs.

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### **Conclusion**

The **Watts 0889370 957/957RPDA-RT 2-1/2" to 4" Backflow Preventer Repair Kit** is a practical choice for addressing minor wear or component failures in compatible backflow preventers. It offers a cost-effective and relatively straightforward solution for homeowners or businesses with basic plumbing skills. However, it is not a universal fix if the unit has significant structural damage or internal issues beyond the kit s scope, replacement may be necessary.

- You have confirmed the issue is related to seals, gaskets, or minor internal parts.

- You are comfortable with basic plumbing repairs or have a professional available for installation.

- The backflow preventer is relatively new and the repair is expected to be long-lasting.

- The unit is old, frequently fails, or shows signs of major damage.

- You are unsure about the root cause of the problem and lack diagnostic tools.

- The cost of repairs approaches or exceeds the price of a new backflow preventer.

- **Always follow up with a certified backflow tester** after repair to ensure compliance with local regulations and water safety standards.

For long-term reliability, weigh the immediate savings of repair against the potential need for future replacements or additional repairs. If in doubt, consult a licensed plumber or backflow testing professional.

Details:

The ear has a small chip on the smaller one but doesn affect function Good repair kits.

part #: 0889370 prices

• $499.99-$600.00

specifications valvesplumbing:

• brand: Watts
• mpn: 0889370
• suitable media: Water
• color: Black
• pipe size: 4 In
• valve operation: Manual
• backflow preventer type: Reduced Pressure Zone
• depth: 6.500
• type: Pipes, Valves Fittings Valves Backflow Preventer Repair Kit
• length: 2.25 In
• features: Backflow Preventer Repair Kits
• country of origin: United States

shipping valvesplumbing:

• transit: 5-11 Days
• cost: $13.98
• class: Standard
• service: USPS Ground Advantage
• type: Calculated
• carrier: USPS

general valvesplumbing:

• condition: Used
• Hydraulics, Pneumatics, Pumps Plumbing > Valves Manifolds > Backflow Preventers

seller valvesplumbing:

• # reviews: 329
• city: Gilmanton Iron Works, New Hampshire
• rating: 97.5%

payments valvesplumbing:

• wallet: Google-pay
• other
• credit card: Discover

returns valvesplumbing:

• policy: No Returns

offer valvesplumbing:

• sold: 0
• started: May 17, 2026
• best offers: True
• availability: In Stock
• quantity: 1
• options: Ship-to-home

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