The Asse 1022 Dual Check Valve is a small-footprint, code-aware solution for potable water backflow protection. It helps prevent contaminants and corrosive substances, such as carbonic acid, from entering drinking water. Using an approved device helps safeguard potable supplies while supporting compliance with local and national plumbing requirements.
Asse 1013
Backflow preventer manufacturers, including Watts, make devices that are built to meet ASSE performance requirements and recognized certifications. These may include NSF/ANSI 61 and UL/FM approvals. Those credentials help verify material safety, pressure durability, and overall assembly performance. Although some authorities require higher-protection assemblies, an Asse 1022 device may be a suitable low-hazard option where the local authority permits it.
The Asse 1022 Dual Check Valve is valued for its small footprint, simple installation, and low maintenance costs. This guide explains how Asse 1022 devices compare with higher-protection standards such as Asse 1013. It also covers how to select, install, and maintain units to stay compliant with plumbing codes and industry recommendations.
Backflow Basics And The Role Of Dual Check Valves
Backflow creates a potentially harmful risk because water can reverse direction inside a plumbing system. That backward flow may carry contaminants into potable lines and reduce the safety of drinking water. Local water authorities and adopted codes require measures that prevent this contamination.
Backflow usually happens because of one of two hydraulic conditions. Backsiphonage occurs when supply pressure drops and creates a vacuum that pulls water backward. Backpressure occurs when pressure on the downstream side becomes greater than supply pressure and pushes water backward. Understanding backsiphonage versus backpressure is critical because each may require a specific prevention method.
In homes, common cross-connections include irrigation systems, garden hoses, boilers, and chemical injection points. Commercial facilities may also include booster pumps, closed-loop HVAC systems, process equipment, and similar connections. Without the right device, these connections may become pathways for pollutants or unwanted substances.
Dual check valves, including the Asse 1022 model, are designed for low-hazard protection. They are used where reverse flow might affect taste, odor, or water quality without creating a direct health hazard. An Asse 1022 Backflow Preventer can be a compact solution for approved low-hazard applications described by plumbing codes and water authorities.
Proper device selection and installation are guided by codes and standards. ASSE performance requirements and ANSI-accredited development support product acceptance. Installers must follow local plumbing code language, including references such as the 2018 UPC and AWWA M-14, when installing Asse 1022 devices.
Typical approved uses include residential irrigation, HVAC makeup lines, and some commercial low-hazard cross-connections. When the hazard level is higher, authorities typically require a more protective assembly.
| Problem | Typical Cause | Typical Protection |
|---|---|---|
| Reverse flow from suction | Supply pressure drop from mains, firefighting, or line breaks | Asse 1022 Backflow Preventer or air gap where required |
| Reverse flow from downstream pressure | Downstream pressure from pumps, tanks, or thermal expansion | Dual check protection for low risk, or reduced-pressure protection for high risk |
| Drinking-water contamination risk | Chemical injection, treated boiler water, irrigation additives, or industrial fluids | Assess hazard level; apply Asse 1022 or higher-rated device |
What Is Backflow And How It Occurs
Backflow is the backward movement of water from any source into the public supply. It may be caused by negative supply pressure, backsiphonage, or excess downstream pressure. Either condition can allow contaminants to enter potable lines and threaten drinking-water quality.
Why Low-Hazard Systems Use Dual Check Valves
Dual check valves provide two independent check mechanisms in one body. That built-in redundancy helps protect low-hazard cross-connections from reverse flow. Asse 1022 devices meet performance criteria for nuisance-level risks and are common where codes allow double-check assemblies.
Understanding The Asse 1022 Dual Check Valve
The Asse 1022 Dual Check Valve is a compact backflow device designed for low-hazard potable water protection. It features two independent, spring-loaded check valves in series. This arrangement prevents reverse flow and provides redundant sealing. It also supports serviceability while reducing contamination risk during pressure changes, brief backpressure events, or short disruptions.
Key Features And How The Valve Works
Spring-loaded checks provide positive closure under changing flow and pressure. Many models include serviceable internal parts and replaceable seats. That design can shorten maintenance time and reduce long-term ownership costs.
Manufacturers offer units in several materials, including bronze, brass, corrosion-resistant metals, and engineered plastics. Sizes match standard pipe diameters and pressure ratings for municipal and commercial potable-water systems.
Built-in test ports and compact bodies support quick installation and routine inspection. The Asse 1022 Backflow Preventer fits tight spaces where larger assemblies cannot. It meets flow requirements for typical low-hazard applications.
Certifications And Standards Behind ASSE 1022 Devices
ASSE standards establish baseline performance tests and functional thresholds. Those tests are used to verify dependable operation under defined conditions. Many products exceed these minimums, reducing failure risk and extending maintenance intervals.
NSF/ANSI 61 certification helps confirm that wetted materials are suitable for drinking water and do not leach harmful contaminants. UL/FM approvals validate durability and performance under pressure and stress testing. This gives specifying engineers additional assurance.
Together with ANSI-accredited standards development, these approvals can improve acceptance of an Asse 1022 Dual Check Valve in specifications and code reviews. For teams that need verified material safety and tested performance, ASSE 1022 compliance, NSF/ANSI 61 certification, and UL/FM marks can form a strong compliance package.
Comparing Related Standards And Products: ASSE 1013, ASSE 1012, And ASSE 1024
This section compares common backflow-protection options so the device can be matched to the hazard level and code requirement. It explains practical differences among RPZ assemblies, double-check devices, and other dual-check products used in U.S. plumbing systems.
When choosing a device, begin with the hazard level. ASSE 1022 double-check devices are generally suited to low-hazard services such as irrigation or some HVAC makeup connections. By contrast, Asse 1013 RPZ units are designed for high-hazard cross-connections where contaminants could create a health risk. Asse 1024 covers reduced-pressure principle devices for severe contamination scenarios. Use Asse 1012 standards when specifying certain dual-check products or service-line applications.
ASSE 1022 Versus ASSE 1013 And ASSE 1024
ASSE 1022 double-check devices rely on two check valves, and where applicable shutoff valves, to control backflow in low-hazard uses. ASSE 1013 RPZ assemblies add a relief valve that vents to atmosphere under certain pressure conditions, creating a higher protection margin. Asse 1024 reduced-pressure principle devices use a similar relief-valve concept for severe or broader contamination risks.
Testing frequency and complexity differ between these products. Asse 1013 RPZ units commonly require annual testing, post-event checks, and relief-valve verification. ASSE 1022 double-check devices require periodic testing of the check mechanisms, generally with simpler procedures than RPZ assemblies.
When ASSE 1012 And Other Dual-Check Standards Apply
Asse 1012 covers requirements for selected dual-check configurations used in low- or moderate-hazard applications. Choose this standard when local code or the water authority allows a dual-check format but requires a recognized standard beyond ASSE 1022.
Code requirements differ from one jurisdiction to another. Many municipalities following the 2018 UPC require ASSE 1013 RPZ for high-hazard cross-connections. Utilities may allow ASSE 1022 for low-hazard applications or specify Asse 1012-certified dual-check devices for certain service-line uses. Before installation, confirm the required protection level with the local water authority or authority having jurisdiction.
| Feature | Asse 1022 | ASSE 1013 RPZ | Asse 1024 Reduced Pressure Principle | Asse 1012 |
|---|---|---|---|---|
| Primary use | Low-hazard irrigation and selected HVAC makeup lines | High-risk contamination protection | Severe backflow hazards needing relief-valve protection | Certain service-line dual-check applications |
| Hazard protection | Low hazard | High hazard | High | Low or moderate hazard |
| Relief feature | Not included | Includes atmospheric relief valve | Required relief feature | Usually no relief valve unless required |
| Testing approach | Periodic check valve testing | Annual testing and relief valve verification | Regular testing with relief-valve checks | Periodic testing per authority rules |
| Typical applications | Residential irrigation and selected HVAC makeup lines | High-hazard systems involving toxic or harmful fluids | Reduced-pressure protection for severe hazard sources | Service lines where dual-check is sufficient and allowed |
| Code preference | Permitted where local authority approves low-hazard use | Often required where contamination could affect health | Used where serious contamination protection is required | Used when specified by local code or utility |
When comparing ASSE 1022 with RPZ assemblies, consider the hazard level, safety margin, and testing burden. RPZ versus double-check decisions depend on hazard assessment, local code, and water authority rules. When in doubt, choose the higher protection level specified by the authority having jurisdiction.
Installation Maintenance And Code Compliance
Proper Asse 1022 installation begins with thorough planning. Dual check valves should be installed where they are accessible and oriented according to the manufacturer’s instructions. Maintain enough space for service, testing ports, and unions. That clearance allows certified testers or service technicians to reach fittings without unnecessary disassembly.
Use sound piping practices so the installation does not create a new cross-connection risk. Do not place the device where downstream cross-connections can bypass or undermine the protection. Install shutoffs, unions, and drain provisions according to manufacturer instructions and local codes. Keep unions and test cocks accessible for inspections, service work, and backflow testing.
Maintenance intervals are usually determined by local regulations, water authority rules, and site requirements. Many areas require annual inspections and backflow tests by certified professionals. Clear records of service, repairs, and test results help demonstrate compliance during audits, inspections, and permit reviews.
Certified testers provide documented evidence that satisfies most regulatory requirements. AWWA M-14 can be used as a reference for inspection, maintenance, and backflow-prevention practices. Following these guidelines can reduce downtime and detect wear before leaks or failures occur.
Choose devices with recognized listings to simplify approval. Products with ASSE approvals and NSF/ANSI 61 installation ratings are often accepted more readily by plumbing inspectors. UL/FM compliance may also be important for commercial, industrial, or fire-protection connections that require third-party recognition.
Before installation, learn the applicable plumbing code edition and water authority rules in your area. Certain jurisdictions may require an RPZ rather than a dual check valve. Confirm permitting requirements and verify that the selected Asse 1022 installation meets local standards before work begins.
Create a consistent record-keeping process for the device. Keep manufacturer cut sheets, test certificates, repair invoices, and a location map together. This simplifies future inspections and supports transparent compliance during regulatory reviews.
Product Selection Guidance And Where To Buy
Choosing the right device means matching size, pressure rating, and materials to the plumbing system. Confirm that the Asse 1022 Dual Check Valve matches the pipe diameter and peak-flow requirement. Also compare pressure ratings with maximum working pressure and expected surge conditions.
Material compatibility is essential for potable water systems. Choose brass, bronze, or NSF/ANSI 61-certified plastics to avoid corrosion or leaching. Review the manufacturer’s chemical-resistance data for local water chemistry.
Certification checks simplify approval and inspection. Confirm that the product lists ASSE 1022 compliance and NSF/ANSI 61 certification. If local codes demand UL or FM approval, confirm those marks before purchase.
Supplier reputation matters when purchasing an ASSE 1022 device. Authorized dealers can provide genuine products, documentation, and warranty assistance. Installation Parts Supply is a reliable distributor that stocks certified units and can assist with model selection.
Warranty terms and pricing policies affect final cost. Review manufacturer warranty limits and any MAP rules that hide prices online. Some suppliers show final pricing only in the cart while still preserving warranty coverage through authorized sales channels.
Choose Materials
- Select an Asse 1022 Dual Check Valve model that matches pipe size, flow rate, and installation layout.
- Use NSF/ANSI 61-certified components for potable-water systems whenever required or available.
- Verify pressure rating and surge tolerance for the Asse 1022 Backflow Preventer.
How To Choose A Supplier
- Buy from certified dealers to ensure inspection documentation.
- Choose vendors that offer sizing support and warranty handling.
- Installation Parts Supply commonly offers certified stock and practical model-selection guidance.
| Buying Factor | What to Check | Why It Helps |
|---|---|---|
| Pipe size and flow | Pipe diameter, GPM requirements, model sizing chart | Ensures the device can handle demand without unnecessary restriction |
| Body and wetted material | Brass, bronze, or NSF/ANSI 61-certified plastics | Helps maintain water quality while reducing corrosion risk |
| Pressure and surge capacity | Rated operating pressure plus expected surge tolerance | Ensures safety under normal and peak conditions |
| Approvals and listings | ASSE 1022 compliance, NSF/ANSI 61 certification, UL/FM when required | Simplifies permitting and meets code requirements |
| Supplier | Dealer authorization, paperwork, and warranty support | Ensures genuine Asse 1022 Backflow Preventer and post-sale support |
| Warranty and final cost | Manufacturer warranty details, MAP pricing policies | Prevents surprises and supports long-term ownership |
Conclusion
ASSE 1022 double-check valves are dependable, space-saving choices for low-risk backflow prevention where local authorities allow them. An Asse 1022 Dual Check Valve uses two spring-loaded check mechanisms and approved materials that may meet NSF/ANSI 61 and ASSE requirements. This helps reduce contamination risks in irrigation and some HVAC makeup lines.
Correct device selection depends on hazard classification, code requirements, and water-authority approval. An Asse 1022 Backflow Preventer is appropriate for low-hazard scenarios where it is allowed. For high-hazard applications, authorities may require ASSE 1013, ASSE 1024, or another reduced-pressure assembly. Correct selection can simplify permitting, reduce rework, and improve potable-water protection.
To ensure backflow prevention compliance, follow manufacturer guidelines and local plumbing codes. Where applicable, this may include the 2018 UPC, local amendments, and water authority rules. Purchase certified products from trusted suppliers. Verify ASSE, NSF/ANSI 61, and UL or FM listings for approvals and reliability.
Reliable backflow protection depends on correct selection, accurate installation, and routine maintenance. These steps, supported by certified devices and qualified testers, help safeguard potable water. They also support regulatory acceptance. Following these practices helps an Asse 1022 Dual Check Valve or other approved backflow solution perform reliably over time.
