An Asse 1022 Dual Check Valve provides a practical way to support potable-water backflow protection where local code allows it. It helps prevent contaminants and corrosive substances, such as carbonic acid, from entering drinking water. Approved devices are essential for safeguarding potable supplies and following local and national codes.
Asse 1022 Backflow Preventer
Manufacturers such as Watts produce backflow preventers that meet ASSE performance requirements and certifications. Depending on the model and application, approvals may include NSF/ANSI 61, UL, FM, or similar third-party listings. These credentials help confirm that materials will not leach harmful substances and that assemblies can withstand pressure and stress. While some jurisdictions require higher-protection assemblies, the Asse 1022 can serve as a reliable low-hazard option where allowed.
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 outlines selection, installation, maintenance, and compliance steps so the unit can meet plumbing-code expectations and industry guidance.
Backflow Basics And The Role Of Dual Check Valves
Backflow is a significant threat to water systems because it allows treated water to move backward. That backward flow may carry contaminants into potable lines and reduce the safety of drinking water. Water authorities and adopted plumbing codes require backflow protection to help prevent this kind of contamination.
Two main hydraulic causes lead to backflow incidents. Backsiphonage occurs when supply pressure falls, creating suction that can draw water in reverse. 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.
Residential cross-connections often involve irrigation systems, garden hoses, boilers, and chemical injectors. Commercial facilities may also include booster pumps, closed-loop HVAC systems, process equipment, and similar connections. Without proper protection, these connections can become sources of pollutants.
Dual check valves, including the Asse 1022 model, are designed for low-hazard protection. They help prevent contaminants that may affect taste or odor but are not considered a direct health risk. 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 should follow local plumbing-code language and relevant guidance, such as the 2018 UPC and AWWA M-14, when applying 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.
| Issue | Cause | Recommended Protection |
|---|---|---|
| Reverse flow from suction | Supply pressure drop from mains, firefighting, or line breaks | Asse 1022 Backflow Preventer for low-hazard use, or air gap where code requires |
| 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 |
| Risk to potable water quality | Fertilizers, boiler chemicals, cleaning agents, or process liquids | Evaluate the cross-connection and install the approved protection level |
What Backflow Is And How It Happens
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. Both conditions can introduce contaminants and threaten potable water quality.
Why Low-Hazard Systems Use Dual Check Valves
Dual check valves provide two independent check mechanisms in one body. This redundancy protects low-hazard cross-connections against reverse flow. Asse 1022 devices are tested for low-hazard or nuisance-level risks and are commonly used where the authority allows this type of protection.
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 uses two independent spring-loaded checks arranged in series. This arrangement prevents reverse flow and provides redundant sealing. It maintains serviceability and reduces contamination risk during pressure shifts or brief backpressure events.
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 produce Asse 1022 units in materials such as bronze, brass, corrosion-resistant alloys, and engineered plastics. Sizes match standard pipe diameters and pressure ratings for municipal and commercial potable-water systems.
Compact bodies, service access, and built-in test ports can make installation and inspection faster. An Asse 1022 Backflow Preventer can fit into tight locations where larger backflow assemblies may not be practical. Properly sized models can meet flow demands for common low-hazard applications.
Certifications And Standards Behind ASSE 1022 Devices
ASSE standards define baseline performance tests, functional requirements, and operating thresholds. Those tests are used to verify dependable operation under defined conditions. Many listed products exceed minimum requirements, which may reduce failure risk and support longer maintenance intervals.
NSF/ANSI 61 certification confirms materials are safe for drinking water and helps prevent harmful contaminant leaching. UL/FM approvals can support confidence in durability, pressure resistance, and stress-tested performance. These listings give engineers, inspectors, and installers additional assurance when specifying equipment.
When combined with ANSI-accredited development, these approvals improve the Asse 1022 Dual Check Valve’s acceptance in plumbing codes and project specifications. 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. In contrast, Asse 1013 RPZ devices are intended for high-hazard cross-connections where contamination could threaten health. Asse 1024 applies to reduced-pressure principle devices used where severe contamination risk may exist. 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 assemblies use two check valves and shutoff valves to prevent backflow in low-hazard situations. ASSE 1013 RPZ devices include a relief valve that vents to atmosphere when internal pressure drops, providing a higher safety 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. Double-check assemblies under ASSE 1022 require periodic testing to confirm both checks operate, with simpler procedures than RPZ testing.
When ASSE 1012 Or 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. Always confirm requirements with the local water authority before installation.
| Device Feature | ASSE 1022 Device | ASSE 1013 RPZ | Asse 1024 | Asse 1012 |
|---|---|---|---|---|
| Typical use | Low-risk potable-water cross-connections | High-risk contamination protection | Severe backflow hazards needing relief-valve protection | Dual-check configurations for specific service applications |
| Protection level | Low | High | High | Low or moderate hazard |
| Relief valve | No relief valve | Includes atmospheric relief valve | Yes, required | Usually no relief valve unless required |
| Typical testing | Routine check-mechanism verification | Annual and post-event testing with relief verification | Annual reduced-pressure assembly testing | Testing as required by the water authority |
| Common applications | Low-hazard cross-connections where allowed | Chemical feed and boiler makeup with toxic chemicals | Severe contamination sources where health impact is possible | Service-line applications where dual-check protection is accepted |
| Authority preference | Permitted where local authority approves low-hazard use | Mandated for high-hazard by many water authorities | Required for serious contamination threats | Used when specified by local code or utility |
For an ASSE 1022 comparison with RPZ units, consider both safety margin and testing needs. RPZ versus double-check decisions depend on hazard assessment, local code, and water authority rules. If requirements are uncertain, follow the higher protection level required by the authority having jurisdiction.
Installation, Maintenance, And Code Compliance
Proper Asse 1022 installation begins with thorough planning. Place dual check valves in an easily accessible area and follow the manufacturer’s orientation guidelines. Leave adequate clearance for service access, testing ports, shutoffs, and unions. That clearance allows certified testers or service technicians to reach fittings without unnecessary disassembly.
Follow good piping practices to avoid introducing new hazards. Avoid installing devices where downstream cross-connections could 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. Detailed records of service and test results are important for proving compliance during audits and permit reviews.
Certified testers can provide documentation that meets many regulatory and water-authority requirements. Refer to AWWA M-14 for recommended inspection and maintenance 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 also matters for commercial and fire-protection connections where third-party recognition is important.
Before starting, identify the applicable plumbing code edition and local water authority requirements. Some locations may require an RPZ instead of a dual check. Confirm the permit process and make sure the chosen Asse 1022 installation meets local standards to avoid delays and rework.
Create a consistent record-keeping process for the device. Store manufacturer cut sheets, test certificates, and repair invoices with a map of the device location. This simplifies future inspections and supports transparent compliance during regulatory reviews.
Where To Buy And How To Select The Right Product
Selecting the right device requires matching pipe size, pressure rating, material, and system demand. 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. Use brass, bronze, or NSF/ANSI 61-certified plastics to reduce corrosion risk and avoid harmful 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 the local authority requires UL or FM approvals, verify those markings before buying.
Consider supplier reputation when buying ASSE 1022 devices. Authorized dealers provide genuine parts, documentation, and warranty support. Installation Parts Supply is a reputable distributor that stocks certified units and can help with model selection.
Warranty coverage and pricing rules can affect the final purchase cost. Review manufacturer warranty limits and any MAP rules that hide prices online. Some stores require cart checkout to reveal final pricing while preserving full warranty through authorized sales channels.
Material Selection Tips
- Select an Asse 1022 Dual Check Valve model that matches pipe size, flow rate, and installation layout.
- Prefer components with NSF/ANSI 61 certification for potable systems.
- Check the Asse 1022 Backflow Preventer pressure rating and surge tolerance before installation.
Trusted Suppliers
- Purchase from certified or authorized dealers so documentation is available for inspections.
- Choose vendors that offer sizing support and warranty handling.
- Installation Parts Supply commonly offers certified stock and practical model-selection guidance.
| Selection Point | What to Check | Reason It Matters |
|---|---|---|
| Pipe size and flow | Line diameter, expected flow, and model capacity data | Prevents pressure loss and ensures proper operation |
| Body and wetted material | Brass, bronze, or NSF/ANSI 61-certified plastics | Protects potable water quality and resists corrosion |
| Pressure and surge capacity | Manufacturer pressure limits and site surge conditions | Reduces risk of damage during pressure changes |
| Approvals and listings | ASSE 1022 compliance, NSF/ANSI 61 certification, UL/FM when required | Helps inspectors approve the installation more easily |
| Supplier | Supplier reputation, product authenticity, and technical help | Reduces risk of counterfeit parts and improves after-sale support |
| Warranty and final cost | Manufacturer warranty details, MAP pricing policies | Protects investment and clarifies purchase cost |
Conclusion
ASSE 1022 double-check valves are dependable, space-saving choices for low-risk backflow prevention where local authorities allow them. The Asse 1022 Dual Check Valve uses two spring-loaded checks and materials that meet NSF/ANSI 61 and ASSE standards. This helps reduce contamination risk in approved uses such as irrigation systems and certain HVAC makeup lines.
Correct device selection depends on hazard classification, code requirements, and water-authority approval. Use an Asse 1022 Backflow Preventer for low-hazard scenarios. For high-hazard applications, authorities may require ASSE 1013, ASSE 1024, or another reduced-pressure assembly. Proper selection streamlines permitting and improves water-system safety.
For backflow-prevention compliance, follow manufacturer instructions and local plumbing-code requirements. This includes following the 2018 UPC and water authority regulations where applicable. Buy certified products from trusted suppliers or authorized dealers. Confirm ASSE listings, NSF/ANSI 61 certification, and UL or FM approvals when those marks are required.
Correct device selection, precise installation, and regular maintenance are essential. When supported by certified devices and qualified testers, these steps help protect 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.