1 / 7WISLULU 1in Pressure Vacuum Breaker Assembly
The WISLULU 1in Pressure Vacuum Breaker Assembly is a brass irrigation backflow valve with 1-inch inlet and outlet connections. The listing describes automatic vacuum breaking and a centerline test plug, but its stated 400 psi maximum operating pressure and compatibility claims are manufacturer assertions, not independently verified specifications.
At a glance
- Listing describes automatic vacuum breaking when flow stops, plus a centerline test plug for checking.
- The product description specifies vertical installation at least 12 inches above the highest sprinkler head.
- Factory-applied sealant is claimed. The listing warns not to unscrew the sealed area.
Reference price: $84.88
Price checked: Nov 14, 2026
View offerAhead of Black FridayExplore the selectionPros and cons
Pros
- 1-inch inlet and outlet connections are specified for matching irrigation plumbing.
- The listing identifies brass construction and a metal top cover.
- A marked flow direction and centerline test plug are described for installation and inspection.
Technical specifications
8 specifications| Brand | WISLULU |
|---|---|
| Model | 1in Pressure Vacuum Breaker Assembly |
| Valve type | Vacuum Relief Valve |
| Inlet connection size | 1 inches |
|---|---|
| Thread size | 1in |
| Maximum operating pressure | 400 psi |
| Exterior finish | Brass |
|---|---|
| Dimensions listed | 9.25 x 9.05 x 4.33 inches |
What to know before buying
- The listing claims a 400 psi maximum operating pressure and fit for 720A models, but provides no supporting certification or test details. Confirm compatibility and pressure requirements for the intended system. Install vertically at least 12 inches above the highest sprinkler head, as the product description specifies. Do not unscrew the factory-sealed body. The listing also describes yearly testing through side ports.
What’s in the box
Included- 1in Pressure Vacuum Breaker Assembly Sprinkler Backflow Valve
Who is it for?
A good fit for
- Irrigation-system owners seeking a 1-inch pressure vacuum breaker assembly with listed brass construction.
- Buyers whose installation can meet the stated vertical orientation and height requirement.
Less suited to
- Buyers who need independently documented pressure ratings, approvals, or verified compatibility before purchase.
- Installations that cannot place the assembly vertically at least 12 inches above the highest sprinkler head.
Frequently asked questions
What connection size is listed?
The listing gives 1-inch inlet and outlet connection sizes and a 1in thread size.
How does the listing say it should be installed?
The product description calls for vertical installation at least 12 inches above the highest sprinkler head. Confirm the installation requirements for your system.
Can the sealed body be opened?
The listing says factory sealant is used and warns not to unscrew the sealed area.
Does the listing confirm fit with 720A models?
It claims fit for 720A models, but gives no compatibility documentation. Verify fit for the specific system before buying.
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