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E-cowlboy

E-cowlboy Replacement for Watts 0887718 Backflow Convert Kit for 1 800M4-QT Conversion to Freeze-Resistant 800M4-FR Complete Set for

$15.87$107.99

503+ bought in the past month

About this item

  • Custom Fit: This 0887718 Retrofit Kit is specifically designed for 1" 800M4 series pressure vacuum breaker (PVB) backflow preventer, converting your 800M4-QT into a freeze-resistant 800M4-FR model.
  • Enhanced Functionality: This retrofit kit not only repairs any leaks or malfunctions in your pressure vacuum breaker but also adds the capability of freeze resistance, providing optimal performance in colder climates.
  • Easy Installation: Designed for user-friendly installation, this kit allows you to easily convert your device by yourself, saving you time and service costs.
  • Not Just Freeze-Resistant, but Health-Conscious: While the kit provides freeze-resistance, remember to drain and winterize your device in freezing conditions. It also helps prevent the reverse flow of polluted water into your potable water supply.
  • All Essential Components Included:This backflow conversion kit includes Hood, Hood Screws (2), Bonnet, Bonnet O-Ring, Vent Spring, and Vent Float Assembly—everything required to complete a full repair or freeze-resistant upgrade in one package.
  • Premium Materials – Up to 3× Longer Service Life:Made from high-strength engineered polymers and corrosion-resistant metal, key components are tested for 8,000+ open/close cycles under normal pressure, delivering up to 3× longer lifespan than standard replacement kits.
  • Warranty & Support – Buy with Confidence: Includes 12-month quality warranty and 30-day money-back guarantee. Backed by a professional customer support team for worry-free service.

Key details

manufacturer
E-cowlboy
best_sellers_rank
#12,757 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #107 in Pressure Washer Accessories

Dimensions and fit

dimensions
3 x 3 x 3 inches
weight
6.7 ounces
product_dimensions
3 x 3 x 3 inches
item_weight
6.7 ounces

Technical specifications

item_model_number
0887718
Highlights

About this item

  • Custom Fit: This 0887718 Retrofit Kit is specifically designed for 1" 800M4 series pressure vacuum breaker (PVB) backflow preventer, converting your 800M4-QT into a freeze-resistant 800M4-FR model.
  • Enhanced Functionality: This retrofit kit not only repairs any leaks or malfunctions in your pressure vacuum breaker but also adds the capability of freeze resistance, providing optimal performance in colder climates.
  • Easy Installation: Designed for user-friendly installation, this kit allows you to easily convert your device by yourself, saving you time and service costs.
  • Not Just Freeze-Resistant, but Health-Conscious: While the kit provides freeze-resistance, remember to drain and winterize your device in freezing conditions. It also helps prevent the reverse flow of polluted water into your potable water supply.
  • All Essential Components Included:This backflow conversion kit includes Hood, Hood Screws (2), Bonnet, Bonnet O-Ring, Vent Spring, and Vent Float Assembly—everything required to complete a full repair or freeze-resistant upgrade in one package.
  • Premium Materials – Up to 3× Longer Service Life:Made from high-strength engineered polymers and corrosion-resistant metal, key components are tested for 8,000+ open/close cycles under normal pressure, delivering up to 3× longer lifespan than standard replacement kits.
  • Warranty & Support – Buy with Confidence: Includes 12-month quality warranty and 30-day money-back guarantee. Backed by a professional customer support team for worry-free service.

From the brand

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Customer reviews

117 reviewsPositive

Rated 4.8/5 across 117 reviews — highly regarded by customers.

  • 100% of sampled reviews are from verified purchases.
  • 100% of sampled reviews give 4–5 stars.

Customers say

Customers find the backflow conversion kit works well and is extremely easy to install, with one mentioning it took only 5 minutes to complete.

Generated from the text of customer reviews

★★★★★

Easy fixing

Works perfectly. Read more

DsVerified purchase
★★★★★

5 minute upgrade and repair

Fit perfectly, easy and economical way to convert to freeze resistant valve. Read more

HelicoperVerified purchase
★★★★★

Nice and easy

It was super fast and easy (like 5 min) install and worked right off the bat. O-rings are fit, no leaks. Read more

TV6MakVerified purchase
★★★★★

Easy repair

Works great easy instal Read more

Paul A. Van BruntVerified purchase
★★★★★

Fit

Fits perfectly on watts backflow Read more

EdgarVerified purchase
★★★★★

Super Easy

Excellent product and extremely easy to install Read more

ScottVerified purchase
★★★★★

Excellent value, nor need to overpay!

Parts fit perfectly and sprinklers are up and running again. No need to pay a cent more. Manufacturer replacement was 4-5x the cost Read more

Matthew ShadVerified purchase
★★★★★

Replacement for 1” Watts M4

Exact fit and replacement for the 1” Watts M4 FR backflow preventer. Mine was leaking and was quoted over $250 to fix/replace. Once I took it apart, I realized the seals had dry rotted. This kit fixed my leaking issue and haven’t had problems since. Read more

KeithVerified purchase
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