The Asse 1022 Dual Check Valve is a space-saving, 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 preserve 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. 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 covers how to select, install, and maintain units to stay compliant with plumbing codes and industry recommendations.
Understanding Backflow And How Dual Check Valves Help
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.
Backflow usually happens because of one of two hydraulic conditions. Backsiphonage occurs when supply pressure falls, creating suction that can draw water in reverse. Backpressure happens when downstream pressure exceeds supply pressure and forces water in the wrong direction. 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 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 help prevent contaminants that may affect taste or odor but are not considered a direct health risk. The Asse 1022 Backflow Preventer is a compact solution for many applications identified in plumbing codes.
Correct selection and installation depend on the applicable codes, listings, and standards. ASSE performance requirements, together with ANSI-accredited standards development, help 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.
Common approved uses may include residential irrigation, HVAC makeup water, and selected commercial low-hazard cross-connections. When the hazard level is higher, authorities typically require a more protective assembly.
| Backflow Issue | Typical Cause | Recommended Protection |
|---|---|---|
| Backsiphonage | Negative supply pressure caused by line breaks, mains work, or heavy demand | 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 | Asse 1022 for low-hazard; RPZ for high-hazard |
| Risk to potable water quality | Fertilizers, boiler chemicals, cleaning agents, or process liquids | Assess hazard level; apply Asse 1022 or higher-rated device |
What Backflow Is And How It Happens
Backflow means water moves in reverse from a fixture, device, or private system toward 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 Dual Check Valves Are Used For Low-Hazard Protection
Dual check valves provide two independent check mechanisms in one body. This redundancy protects low-hazard cross-connections against reverse flow. Asse 1022 devices meet performance criteria for nuisance-level risks and are common where codes allow double-check assemblies.
Asse 1022 Dual Check Valve Overview
An Asse 1022 Dual Check Valve is a compact backflow prevention device used for low-hazard potable-water applications. It features two independent, spring-loaded check valves in series. That arrangement helps stop reverse flow and gives the device a second sealing point. It maintains serviceability and reduces contamination risk during pressure shifts or brief backpressure events.
Key Features And How The Valve Works
Spring-loaded check mechanisms help the valve close positively when flow or pressure changes. Many units are built with serviceable internals, replaceable seats, or removable parts. This design reduces maintenance time and lifecycle costs.
Manufacturers produce Asse 1022 units in materials such as bronze, brass, corrosion-resistant alloys, and engineered plastics. Available sizes are designed to match common pipe diameters, pressure ratings, and potable-water system requirements.
Built-in test ports and compact bodies support quick installation and routine inspection. 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.
Standards And Certifications Supporting ASSE 1022 Devices
ASSE standards define baseline performance tests, functional requirements, and operating thresholds. These tests verify reliable operation. Many listed products exceed minimum requirements, which may reduce failure risk and support longer 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.
When combined with ANSI-accredited development, these approvals improve the Asse 1022 Dual Check Valve’s acceptance in plumbing codes and project specifications. For project teams seeking verified material safety and tested performance, ASSE 1022 features, NSF/ANSI 61, and UL/FM marks create a strong compliance package.
ASSE 1022 Compared With 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 highlights practical differences between RPZ, double-check, and other dual-check devices used in the United States.
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 covers reduced-pressure principle devices for severe contamination scenarios. Use Asse 1012 standards when specifying certain dual-check products or service-line applications.
How ASSE 1022 Differs From ASSE 1013 And ASSE 1024 Devices
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 the same relief concept but apply to a broader set of severe 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 defines requirements for certain dual-check configurations used in low- to moderate-hazard settings. Choose this standard when local code or the water authority allows a dual-check format but requires a recognized standard beyond ASSE 1022.
Codes vary by jurisdiction. Many municipalities that follow the 2018 UPC require ASSE 1013 RPZ assemblies for high-hazard cross-connections. Utilities may accept ASSE 1022 in low-hazard cases or require Asse 1012-certified dual-check devices for certain service lines. Before installation, confirm the required protection level with the local water authority or authority having jurisdiction.
| Comparison Point | ASSE 1022 | ASSE 1013 RPZ | Asse 1024 Reduced Pressure Principle | ASSE 1012 Device |
|---|---|---|---|---|
| Typical use | Low-hazard services like irrigation and some HVAC | High-hazard cross-connections and health-risk protection | Severe backflow hazards needing relief-valve protection | Dual-check configurations for specific service applications |
| Protection level | Low hazard | High hazard | High | Low to moderate |
| Atmospheric relief | No relief valve | Required relief valve | Required relief feature | Usually no relief valve unless required |
| Inspection requirement | Routine check-mechanism verification | Annual and post-event testing with relief verification | Regular testing with relief-valve checks | Testing as required by the water authority |
| Typical applications | Residential irrigation and selected HVAC makeup lines | High-hazard systems involving toxic or harmful fluids | Severe contamination sources where health impact is possible | 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 |
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.
Installing, Maintaining, And Staying Code-Compliant
A correct Asse 1022 installation starts with careful 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.
Use sound piping practices so the installation does not create a new cross-connection risk. Avoid installing devices where downstream cross-connections could undermine the protection. Install shutoffs, unions, and drain provisions according to manufacturer instructions and local codes. Make sure unions and test cocks remain accessible for routine service and backflow testing.
Maintenance intervals are usually determined by local regulations, water authority rules, and site requirements. Many jurisdictions require annual inspection or testing by certified backflow professionals. Detailed records of service and test results are important for proving compliance during audits 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 certifications are often easier for inspectors to accept. UL/FM compliance also matters for commercial and fire-protection connections where third-party recognition is important.
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 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. Keep manufacturer cut sheets, test certificates, repair invoices, and a location map together. This makes future inspections easier and supports clear 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 a key consideration in potable-water systems. Choose brass, bronze, or NSF/ANSI 61-certified plastics to avoid corrosion or leaching. Check manufacturer data for chemical resistance, especially if local water chemistry is aggressive or unusual.
Verifying certifications can make approval and inspection easier. Make sure the product shows ASSE 1022 compliance and NSF/ANSI 61 certification where required. 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 suppliers show final pricing only in the cart while still preserving warranty coverage through authorized sales channels.
How To Choose Materials
- 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.
- 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 often provides certified stock and model guidance.
| Selection Point | What to Verify | Why It Matters |
|---|---|---|
| Size and Flow | Line diameter, expected flow, and model capacity data | Helps avoid pressure drop and supports correct function |
| Material compatibility | Approved metals or certified plastics for potable water | Protects potable water quality and resists corrosion |
| Working pressure rating | Maximum working pressure and surge capacity | Ensures safety under normal and peak conditions |
| Compliance markings | ASSE 1022 compliance, NSF/ANSI 61 certification, UL/FM when required | Simplifies permitting and meets code requirements |
| Source of purchase | Authorized dealer, documentation, warranty handling | Ensures genuine Asse 1022 Backflow Preventer and post-sale support |
| Warranty terms and pricing rules | Warranty terms, authorized-sale rules, and final cart price | Protects investment and clarifies purchase cost |
Final Thoughts
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 risk in approved uses such as irrigation systems and certain HVAC makeup lines.
Choosing the right device depends on hazard level and code compliance. 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.
To ensure backflow prevention compliance, follow manufacturer guidelines and local plumbing codes. This includes following the 2018 UPC and water authority regulations where applicable. Purchase certified products from trusted suppliers. Confirm ASSE listings, NSF/ANSI 61 certification, and UL or FM approvals when those marks are required.
Reliable backflow protection depends on correct selection, accurate installation, and routine maintenance. 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.